./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/openssl/s3_srvr.blast.08.i.cil-2.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 09c9794f5f58d2adbebf8646c3b68c44e11cb48c003f44efee5afa1932865143 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:03:42,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:03:42,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:03:43,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:03:43,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:03:43,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:03:43,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:03:43,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:03:43,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:03:43,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:03:43,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:03:43,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:03:43,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:03:43,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:03:43,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:03:43,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:03:43,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:03:43,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:03:43,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:03:43,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:03:43,065 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:03:43,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:03:43,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:03:43,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:03:43,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:03:43,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:03:43,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:03:43,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:03:43,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:03:43,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:03:43,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:03:43,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:03:43,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:03:43,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:03:43,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:03:43,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:03:43,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:03:43,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:03:43,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:03:43,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:03:43,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:03:43,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:03:43,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:03:43,112 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:03:43,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:03:43,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:03:43,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:03:43,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:03:43,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:03:43,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:03:43,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:03:43,115 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:03:43,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:03:43,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:03:43,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:03:43,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:03:43,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:03:43,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:03:43,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:03:43,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:03:43,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:03:43,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:03:43,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:43,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:03:43,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:03:43,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:03:43,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:03:43,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:03:43,122 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:03:43,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:03:43,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:03:43,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09c9794f5f58d2adbebf8646c3b68c44e11cb48c003f44efee5afa1932865143 [2022-07-19 11:03:43,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:03:43,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:03:43,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:03:43,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:03:43,365 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:03:43,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c [2022-07-19 11:03:43,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c4ad32f/1acb4183fdbb4ea085c07e1bac64b32d/FLAGf036c9397 [2022-07-19 11:03:43,848 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:03:43,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c [2022-07-19 11:03:43,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c4ad32f/1acb4183fdbb4ea085c07e1bac64b32d/FLAGf036c9397 [2022-07-19 11:03:44,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c4ad32f/1acb4183fdbb4ea085c07e1bac64b32d [2022-07-19 11:03:44,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:03:44,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:03:44,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:44,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:03:44,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:03:44,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3aecb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44, skipping insertion in model container [2022-07-19 11:03:44,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:03:44,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:03:44,594 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/openssl/s3_srvr.blast.08.i.cil-2.c[74416,74429] [2022-07-19 11:03:44,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:44,614 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:03:44,729 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/openssl/s3_srvr.blast.08.i.cil-2.c[74416,74429] [2022-07-19 11:03:44,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:44,750 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:03:44,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44 WrapperNode [2022-07-19 11:03:44,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:44,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:44,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:03:44,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:03:44,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,838 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 793 [2022-07-19 11:03:44,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:44,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:03:44,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:03:44,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:03:44,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:03:44,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:03:44,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:03:44,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:03:44,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (1/1) ... [2022-07-19 11:03:44,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:03:44,945 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) [2022-07-19 11:03:44,960 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 [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:03:44,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:03:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:03:44,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:03:44,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:03:45,113 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:03:45,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:03:45,138 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:03:46,180 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:03:46,180 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:03:46,181 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:03:46,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:03:46,187 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:03:46,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:46 BoogieIcfgContainer [2022-07-19 11:03:46,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:03:46,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:03:46,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:03:46,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:03:46,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:03:44" (1/3) ... [2022-07-19 11:03:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603dc776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:46, skipping insertion in model container [2022-07-19 11:03:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:44" (2/3) ... [2022-07-19 11:03:46,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603dc776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:46, skipping insertion in model container [2022-07-19 11:03:46,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:46" (3/3) ... [2022-07-19 11:03:46,196 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-2.c [2022-07-19 11:03:46,209 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:03:46,209 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:03:46,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:03:46,258 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fd93086, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27a151bc [2022-07-19 11:03:46,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:03:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 11:03:46,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:46,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:46,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash 917223126, now seen corresponding path program 1 times [2022-07-19 11:03:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:46,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173429654] [2022-07-19 11:03:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:46,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173429654] [2022-07-19 11:03:46,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173429654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:46,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:46,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:46,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596329466] [2022-07-19 11:03:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:46,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:46,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:46,856 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:47,858 INFO L93 Difference]: Finished difference Result 420 states and 714 transitions. [2022-07-19 11:03:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-19 11:03:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:47,873 INFO L225 Difference]: With dead ends: 420 [2022-07-19 11:03:47,877 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 11:03:47,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:47,885 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 154 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:47,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 441 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:03:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 11:03:47,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 177. [2022-07-19 11:03:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.6079545454545454) internal successors, (283), 176 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions. [2022-07-19 11:03:47,962 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 44 [2022-07-19 11:03:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:47,963 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 283 transitions. [2022-07-19 11:03:47,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions. [2022-07-19 11:03:47,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 11:03:47,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:47,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:47,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:03:47,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1833262921, now seen corresponding path program 1 times [2022-07-19 11:03:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:47,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705815907] [2022-07-19 11:03:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:48,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705815907] [2022-07-19 11:03:48,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705815907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:48,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:48,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:48,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712650117] [2022-07-19 11:03:48,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:48,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:48,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:48,207 INFO L87 Difference]: Start difference. First operand 177 states and 283 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:48,694 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2022-07-19 11:03:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:48,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-19 11:03:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:48,696 INFO L225 Difference]: With dead ends: 372 [2022-07-19 11:03:48,697 INFO L226 Difference]: Without dead ends: 205 [2022-07-19 11:03:48,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:48,698 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:48,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-19 11:03:48,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2022-07-19 11:03:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.6149732620320856) internal successors, (302), 187 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 302 transitions. [2022-07-19 11:03:48,712 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 302 transitions. Word has length 45 [2022-07-19 11:03:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:48,713 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 302 transitions. [2022-07-19 11:03:48,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 302 transitions. [2022-07-19 11:03:48,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:03:48,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:48,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:03:48,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:48,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:48,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1138501760, now seen corresponding path program 1 times [2022-07-19 11:03:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908989313] [2022-07-19 11:03:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:48,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:48,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908989313] [2022-07-19 11:03:48,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908989313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:48,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:48,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841674479] [2022-07-19 11:03:48,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:48,899 INFO L87 Difference]: Start difference. First operand 188 states and 302 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:49,621 INFO L93 Difference]: Finished difference Result 511 states and 825 transitions. [2022-07-19 11:03:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-19 11:03:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:49,623 INFO L225 Difference]: With dead ends: 511 [2022-07-19 11:03:49,623 INFO L226 Difference]: Without dead ends: 344 [2022-07-19 11:03:49,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:49,625 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 143 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:49,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 614 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:03:49,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-19 11:03:49,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2022-07-19 11:03:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6118721461187215) internal successors, (353), 219 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 353 transitions. [2022-07-19 11:03:49,637 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 353 transitions. Word has length 58 [2022-07-19 11:03:49,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:49,638 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 353 transitions. [2022-07-19 11:03:49,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 353 transitions. [2022-07-19 11:03:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:03:49,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:49,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:03:49,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash 447657361, now seen corresponding path program 1 times [2022-07-19 11:03:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:49,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494507818] [2022-07-19 11:03:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:49,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494507818] [2022-07-19 11:03:49,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494507818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:49,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:49,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870263915] [2022-07-19 11:03:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:49,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:49,755 INFO L87 Difference]: Start difference. First operand 220 states and 353 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:50,367 INFO L93 Difference]: Finished difference Result 435 states and 694 transitions. [2022-07-19 11:03:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 11:03:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:50,370 INFO L225 Difference]: With dead ends: 435 [2022-07-19 11:03:50,370 INFO L226 Difference]: Without dead ends: 236 [2022-07-19 11:03:50,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:50,372 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 28 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:50,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:03:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-19 11:03:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-19 11:03:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6073059360730593) internal successors, (352), 219 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 352 transitions. [2022-07-19 11:03:50,386 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 352 transitions. Word has length 59 [2022-07-19 11:03:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:50,386 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 352 transitions. [2022-07-19 11:03:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 352 transitions. [2022-07-19 11:03:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:03:50,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:50,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:03:50,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1960406491, now seen corresponding path program 1 times [2022-07-19 11:03:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:50,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60047675] [2022-07-19 11:03:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:50,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:50,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60047675] [2022-07-19 11:03:50,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60047675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:50,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:50,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92579927] [2022-07-19 11:03:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:50,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:50,538 INFO L87 Difference]: Start difference. First operand 220 states and 352 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:51,100 INFO L93 Difference]: Finished difference Result 435 states and 693 transitions. [2022-07-19 11:03:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 11:03:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:51,102 INFO L225 Difference]: With dead ends: 435 [2022-07-19 11:03:51,102 INFO L226 Difference]: Without dead ends: 236 [2022-07-19 11:03:51,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:51,103 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 26 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:51,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-19 11:03:51,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-19 11:03:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6027397260273972) internal successors, (351), 219 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 351 transitions. [2022-07-19 11:03:51,112 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 351 transitions. Word has length 59 [2022-07-19 11:03:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:51,112 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 351 transitions. [2022-07-19 11:03:51,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 351 transitions. [2022-07-19 11:03:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:03:51,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:51,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:51,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:03:51,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1482444028, now seen corresponding path program 1 times [2022-07-19 11:03:51,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320750987] [2022-07-19 11:03:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:51,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:51,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320750987] [2022-07-19 11:03:51,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320750987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:51,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:51,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949089835] [2022-07-19 11:03:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:51,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:51,225 INFO L87 Difference]: Start difference. First operand 220 states and 351 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:51,942 INFO L93 Difference]: Finished difference Result 434 states and 691 transitions. [2022-07-19 11:03:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 11:03:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:51,943 INFO L225 Difference]: With dead ends: 434 [2022-07-19 11:03:51,943 INFO L226 Difference]: Without dead ends: 235 [2022-07-19 11:03:51,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:51,944 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 19 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:51,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 475 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:03:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-19 11:03:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 220. [2022-07-19 11:03:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.5981735159817352) internal successors, (350), 219 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 350 transitions. [2022-07-19 11:03:51,951 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 350 transitions. Word has length 59 [2022-07-19 11:03:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:51,952 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 350 transitions. [2022-07-19 11:03:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 350 transitions. [2022-07-19 11:03:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:03:51,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:51,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:03:51,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -520776260, now seen corresponding path program 1 times [2022-07-19 11:03:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:51,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193591426] [2022-07-19 11:03:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:52,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:52,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:52,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193591426] [2022-07-19 11:03:52,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193591426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:52,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:52,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:52,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84650688] [2022-07-19 11:03:52,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:52,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:52,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:52,085 INFO L87 Difference]: Start difference. First operand 220 states and 350 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:52,867 INFO L93 Difference]: Finished difference Result 520 states and 826 transitions. [2022-07-19 11:03:52,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-19 11:03:52,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:52,869 INFO L225 Difference]: With dead ends: 520 [2022-07-19 11:03:52,869 INFO L226 Difference]: Without dead ends: 321 [2022-07-19 11:03:52,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:52,870 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 142 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:52,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 332 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-19 11:03:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 221. [2022-07-19 11:03:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5863636363636364) internal successors, (349), 220 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 349 transitions. [2022-07-19 11:03:52,877 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 349 transitions. Word has length 59 [2022-07-19 11:03:52,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:52,878 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 349 transitions. [2022-07-19 11:03:52,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 349 transitions. [2022-07-19 11:03:52,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 11:03:52,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:52,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:52,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:03:52,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:52,880 INFO L85 PathProgramCache]: Analyzing trace with hash 321770025, now seen corresponding path program 1 times [2022-07-19 11:03:52,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:52,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726316223] [2022-07-19 11:03:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:52,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726316223] [2022-07-19 11:03:52,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726316223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:52,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:52,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637587488] [2022-07-19 11:03:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:52,966 INFO L87 Difference]: Start difference. First operand 221 states and 349 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:54,113 INFO L93 Difference]: Finished difference Result 434 states and 687 transitions. [2022-07-19 11:03:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:54,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-19 11:03:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:54,115 INFO L225 Difference]: With dead ends: 434 [2022-07-19 11:03:54,115 INFO L226 Difference]: Without dead ends: 234 [2022-07-19 11:03:54,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:54,116 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 22 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:54,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:03:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-19 11:03:54,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-19 11:03:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5818181818181818) internal successors, (348), 220 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 348 transitions. [2022-07-19 11:03:54,123 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 348 transitions. Word has length 60 [2022-07-19 11:03:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:54,124 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 348 transitions. [2022-07-19 11:03:54,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 348 transitions. [2022-07-19 11:03:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:03:54,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:54,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:54,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:03:54,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:54,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash -680439318, now seen corresponding path program 1 times [2022-07-19 11:03:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:54,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896344794] [2022-07-19 11:03:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:54,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896344794] [2022-07-19 11:03:54,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896344794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:54,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:54,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838055122] [2022-07-19 11:03:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:54,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:54,225 INFO L87 Difference]: Start difference. First operand 221 states and 348 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:55,104 INFO L93 Difference]: Finished difference Result 434 states and 686 transitions. [2022-07-19 11:03:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-19 11:03:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:55,105 INFO L225 Difference]: With dead ends: 434 [2022-07-19 11:03:55,105 INFO L226 Difference]: Without dead ends: 234 [2022-07-19 11:03:55,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:55,106 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:55,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:03:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-19 11:03:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-19 11:03:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5772727272727274) internal successors, (347), 220 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 347 transitions. [2022-07-19 11:03:55,115 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 347 transitions. Word has length 61 [2022-07-19 11:03:55,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:55,115 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 347 transitions. [2022-07-19 11:03:55,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,115 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 347 transitions. [2022-07-19 11:03:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 11:03:55,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:55,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:03:55,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:55,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash -419395186, now seen corresponding path program 1 times [2022-07-19 11:03:55,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:55,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979068989] [2022-07-19 11:03:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:55,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979068989] [2022-07-19 11:03:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979068989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:55,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:55,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:55,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434346509] [2022-07-19 11:03:55,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:55,224 INFO L87 Difference]: Start difference. First operand 221 states and 347 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:55,714 INFO L93 Difference]: Finished difference Result 424 states and 672 transitions. [2022-07-19 11:03:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 11:03:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:55,716 INFO L225 Difference]: With dead ends: 424 [2022-07-19 11:03:55,716 INFO L226 Difference]: Without dead ends: 224 [2022-07-19 11:03:55,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:55,717 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:55,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 493 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-19 11:03:55,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-07-19 11:03:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5727272727272728) internal successors, (346), 220 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 346 transitions. [2022-07-19 11:03:55,722 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 346 transitions. Word has length 62 [2022-07-19 11:03:55,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:55,723 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 346 transitions. [2022-07-19 11:03:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 346 transitions. [2022-07-19 11:03:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 11:03:55,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:55,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:55,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:03:55,730 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:55,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:55,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1031268618, now seen corresponding path program 1 times [2022-07-19 11:03:55,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:55,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661835552] [2022-07-19 11:03:55,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:55,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:55,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661835552] [2022-07-19 11:03:55,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661835552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:55,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:55,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:55,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804868890] [2022-07-19 11:03:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:55,837 INFO L87 Difference]: Start difference. First operand 221 states and 346 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:57,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:57,488 INFO L93 Difference]: Finished difference Result 521 states and 820 transitions. [2022-07-19 11:03:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:57,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 11:03:57,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:57,491 INFO L225 Difference]: With dead ends: 521 [2022-07-19 11:03:57,491 INFO L226 Difference]: Without dead ends: 321 [2022-07-19 11:03:57,492 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:03:57,492 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 119 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:57,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 350 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:03:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-19 11:03:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2022-07-19 11:03:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.6090534979423867) internal successors, (391), 243 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 391 transitions. [2022-07-19 11:03:57,499 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 391 transitions. Word has length 62 [2022-07-19 11:03:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:57,500 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 391 transitions. [2022-07-19 11:03:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 391 transitions. [2022-07-19 11:03:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 11:03:57,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:57,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:57,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:03:57,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash -104601615, now seen corresponding path program 1 times [2022-07-19 11:03:57,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:57,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633405528] [2022-07-19 11:03:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:57,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:57,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:57,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633405528] [2022-07-19 11:03:57,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633405528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:57,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:57,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:57,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585607308] [2022-07-19 11:03:57,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:57,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:57,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:57,608 INFO L87 Difference]: Start difference. First operand 244 states and 391 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:59,472 INFO L93 Difference]: Finished difference Result 620 states and 1002 transitions. [2022-07-19 11:03:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-19 11:03:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:59,475 INFO L225 Difference]: With dead ends: 620 [2022-07-19 11:03:59,475 INFO L226 Difference]: Without dead ends: 397 [2022-07-19 11:03:59,475 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:03:59,476 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:59,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 342 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:03:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-19 11:03:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 308. [2022-07-19 11:03:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6384364820846906) internal successors, (503), 307 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 503 transitions. [2022-07-19 11:03:59,484 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 503 transitions. Word has length 90 [2022-07-19 11:03:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:59,485 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 503 transitions. [2022-07-19 11:03:59,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 503 transitions. [2022-07-19 11:03:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 11:03:59,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:59,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:59,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:03:59,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:59,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1229101372, now seen corresponding path program 1 times [2022-07-19 11:03:59,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:59,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474542228] [2022-07-19 11:03:59,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:59,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474542228] [2022-07-19 11:03:59,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474542228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:59,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:59,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479422212] [2022-07-19 11:03:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:59,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:59,591 INFO L87 Difference]: Start difference. First operand 308 states and 503 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:00,469 INFO L93 Difference]: Finished difference Result 712 states and 1158 transitions. [2022-07-19 11:04:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:00,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-07-19 11:04:00,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:00,472 INFO L225 Difference]: With dead ends: 712 [2022-07-19 11:04:00,472 INFO L226 Difference]: Without dead ends: 425 [2022-07-19 11:04:00,472 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:00,473 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 121 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:00,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 330 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-19 11:04:00,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 345. [2022-07-19 11:04:00,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.6482558139534884) internal successors, (567), 344 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 567 transitions. [2022-07-19 11:04:00,482 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 567 transitions. Word has length 95 [2022-07-19 11:04:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:00,482 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 567 transitions. [2022-07-19 11:04:00,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 567 transitions. [2022-07-19 11:04:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 11:04:00,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:00,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:00,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:04:00,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1626646691, now seen corresponding path program 1 times [2022-07-19 11:04:00,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214420720] [2022-07-19 11:04:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 11:04:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214420720] [2022-07-19 11:04:00,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214420720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:00,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:00,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264062354] [2022-07-19 11:04:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:00,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:00,579 INFO L87 Difference]: Start difference. First operand 345 states and 567 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:02,004 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-07-19 11:04:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-19 11:04:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:02,006 INFO L225 Difference]: With dead ends: 710 [2022-07-19 11:04:02,006 INFO L226 Difference]: Without dead ends: 386 [2022-07-19 11:04:02,007 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:02,007 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 32 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:02,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 495 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:02,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-19 11:04:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 367. [2022-07-19 11:04:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6475409836065573) internal successors, (603), 366 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 603 transitions. [2022-07-19 11:04:02,016 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 603 transitions. Word has length 96 [2022-07-19 11:04:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:02,017 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 603 transitions. [2022-07-19 11:04:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 603 transitions. [2022-07-19 11:04:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 11:04:02,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:02,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:02,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:04:02,019 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:02,019 INFO L85 PathProgramCache]: Analyzing trace with hash 215366845, now seen corresponding path program 1 times [2022-07-19 11:04:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:02,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195075965] [2022-07-19 11:04:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:02,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195075965] [2022-07-19 11:04:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195075965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:02,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996152367] [2022-07-19 11:04:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:02,159 INFO L87 Difference]: Start difference. First operand 367 states and 603 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:03,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:03,857 INFO L93 Difference]: Finished difference Result 731 states and 1205 transitions. [2022-07-19 11:04:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:03,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-19 11:04:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:03,859 INFO L225 Difference]: With dead ends: 731 [2022-07-19 11:04:03,859 INFO L226 Difference]: Without dead ends: 385 [2022-07-19 11:04:03,860 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:03,860 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 42 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:03,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 497 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:04:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-19 11:04:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 367. [2022-07-19 11:04:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.644808743169399) internal successors, (602), 366 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 602 transitions. [2022-07-19 11:04:03,868 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 602 transitions. Word has length 110 [2022-07-19 11:04:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:03,869 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 602 transitions. [2022-07-19 11:04:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 602 transitions. [2022-07-19 11:04:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 11:04:03,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:03,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:04:03,871 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1504048209, now seen corresponding path program 1 times [2022-07-19 11:04:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:03,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737155691] [2022-07-19 11:04:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737155691] [2022-07-19 11:04:03,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737155691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:03,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:03,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282480698] [2022-07-19 11:04:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:03,981 INFO L87 Difference]: Start difference. First operand 367 states and 602 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:04,780 INFO L93 Difference]: Finished difference Result 790 states and 1286 transitions. [2022-07-19 11:04:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:04,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-19 11:04:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:04,783 INFO L225 Difference]: With dead ends: 790 [2022-07-19 11:04:04,783 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 11:04:04,784 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:04,784 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 146 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:04,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 11:04:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 367. [2022-07-19 11:04:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6256830601092895) internal successors, (595), 366 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 595 transitions. [2022-07-19 11:04:04,793 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 595 transitions. Word has length 110 [2022-07-19 11:04:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:04,793 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 595 transitions. [2022-07-19 11:04:04,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 595 transitions. [2022-07-19 11:04:04,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 11:04:04,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:04,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:04:04,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:04,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1962293608, now seen corresponding path program 1 times [2022-07-19 11:04:04,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:04,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123554180] [2022-07-19 11:04:04,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:04,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:04,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123554180] [2022-07-19 11:04:04,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123554180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:04,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:04,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683803133] [2022-07-19 11:04:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:04,884 INFO L87 Difference]: Start difference. First operand 367 states and 595 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:05,696 INFO L93 Difference]: Finished difference Result 730 states and 1188 transitions. [2022-07-19 11:04:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:05,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-19 11:04:05,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:05,699 INFO L225 Difference]: With dead ends: 730 [2022-07-19 11:04:05,699 INFO L226 Difference]: Without dead ends: 384 [2022-07-19 11:04:05,699 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:05,700 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 33 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:05,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-19 11:04:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-19 11:04:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6229508196721312) internal successors, (594), 366 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 594 transitions. [2022-07-19 11:04:05,709 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 594 transitions. Word has length 110 [2022-07-19 11:04:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:05,709 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 594 transitions. [2022-07-19 11:04:05,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 594 transitions. [2022-07-19 11:04:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 11:04:05,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:05,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:04:05,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:05,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2092892855, now seen corresponding path program 1 times [2022-07-19 11:04:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:05,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708755703] [2022-07-19 11:04:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:05,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:05,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708755703] [2022-07-19 11:04:05,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708755703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:05,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:05,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:05,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031551892] [2022-07-19 11:04:05,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:05,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:05,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:05,805 INFO L87 Difference]: Start difference. First operand 367 states and 594 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:06,487 INFO L93 Difference]: Finished difference Result 730 states and 1186 transitions. [2022-07-19 11:04:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-19 11:04:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:06,489 INFO L225 Difference]: With dead ends: 730 [2022-07-19 11:04:06,489 INFO L226 Difference]: Without dead ends: 384 [2022-07-19 11:04:06,490 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:06,491 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 37 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:06,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:06,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-19 11:04:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-19 11:04:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6202185792349726) internal successors, (593), 366 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 593 transitions. [2022-07-19 11:04:06,499 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 593 transitions. Word has length 111 [2022-07-19 11:04:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:06,499 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 593 transitions. [2022-07-19 11:04:06,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 593 transitions. [2022-07-19 11:04:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 11:04:06,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:06,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:04:06,501 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash 522612502, now seen corresponding path program 1 times [2022-07-19 11:04:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:06,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635438366] [2022-07-19 11:04:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:06,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635438366] [2022-07-19 11:04:06,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635438366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:06,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:06,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:06,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950726297] [2022-07-19 11:04:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:06,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:06,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:06,615 INFO L87 Difference]: Start difference. First operand 367 states and 593 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:07,077 INFO L93 Difference]: Finished difference Result 730 states and 1184 transitions. [2022-07-19 11:04:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:07,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-19 11:04:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:07,079 INFO L225 Difference]: With dead ends: 730 [2022-07-19 11:04:07,079 INFO L226 Difference]: Without dead ends: 384 [2022-07-19 11:04:07,080 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:07,081 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 35 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:07,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:04:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-19 11:04:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-19 11:04:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6174863387978142) internal successors, (592), 366 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 592 transitions. [2022-07-19 11:04:07,089 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 592 transitions. Word has length 112 [2022-07-19 11:04:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:07,089 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 592 transitions. [2022-07-19 11:04:07,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 592 transitions. [2022-07-19 11:04:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 11:04:07,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:07,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:07,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:04:07,091 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:07,092 INFO L85 PathProgramCache]: Analyzing trace with hash 738933916, now seen corresponding path program 1 times [2022-07-19 11:04:07,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:07,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570162573] [2022-07-19 11:04:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:07,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 11:04:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:07,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570162573] [2022-07-19 11:04:07,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570162573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:07,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:07,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061686016] [2022-07-19 11:04:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:07,186 INFO L87 Difference]: Start difference. First operand 367 states and 592 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:09,069 INFO L93 Difference]: Finished difference Result 720 states and 1169 transitions. [2022-07-19 11:04:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:09,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-19 11:04:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:09,071 INFO L225 Difference]: With dead ends: 720 [2022-07-19 11:04:09,071 INFO L226 Difference]: Without dead ends: 374 [2022-07-19 11:04:09,072 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:09,072 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:09,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 513 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 11:04:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-19 11:04:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 367. [2022-07-19 11:04:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6147540983606556) internal successors, (591), 366 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 591 transitions. [2022-07-19 11:04:09,080 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 591 transitions. Word has length 113 [2022-07-19 11:04:09,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:09,081 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 591 transitions. [2022-07-19 11:04:09,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 591 transitions. [2022-07-19 11:04:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 11:04:09,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:09,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:04:09,083 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:09,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1910274857, now seen corresponding path program 1 times [2022-07-19 11:04:09,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:09,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672750] [2022-07-19 11:04:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:09,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:09,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672750] [2022-07-19 11:04:09,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:09,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369182541] [2022-07-19 11:04:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:09,189 INFO L87 Difference]: Start difference. First operand 367 states and 591 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:10,048 INFO L93 Difference]: Finished difference Result 806 states and 1298 transitions. [2022-07-19 11:04:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:10,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 118 [2022-07-19 11:04:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:10,050 INFO L225 Difference]: With dead ends: 806 [2022-07-19 11:04:10,050 INFO L226 Difference]: Without dead ends: 460 [2022-07-19 11:04:10,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:10,051 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 80 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:10,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 461 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-19 11:04:10,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 407. [2022-07-19 11:04:10,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6206896551724137) internal successors, (658), 406 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 658 transitions. [2022-07-19 11:04:10,061 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 658 transitions. Word has length 118 [2022-07-19 11:04:10,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:10,061 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 658 transitions. [2022-07-19 11:04:10,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,061 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 658 transitions. [2022-07-19 11:04:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 11:04:10,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:10,063 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:04:10,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:10,064 INFO L85 PathProgramCache]: Analyzing trace with hash -176170407, now seen corresponding path program 1 times [2022-07-19 11:04:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:10,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032287697] [2022-07-19 11:04:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 11:04:10,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:10,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032287697] [2022-07-19 11:04:10,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032287697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:10,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:10,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759179636] [2022-07-19 11:04:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:10,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:10,187 INFO L87 Difference]: Start difference. First operand 407 states and 658 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,978 INFO L93 Difference]: Finished difference Result 840 states and 1361 transitions. [2022-07-19 11:04:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 118 [2022-07-19 11:04:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,981 INFO L225 Difference]: With dead ends: 840 [2022-07-19 11:04:11,981 INFO L226 Difference]: Without dead ends: 454 [2022-07-19 11:04:11,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:11,982 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 37 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 593 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-19 11:04:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 431. [2022-07-19 11:04:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6209302325581396) internal successors, (697), 430 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 697 transitions. [2022-07-19 11:04:11,991 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 697 transitions. Word has length 118 [2022-07-19 11:04:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,991 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 697 transitions. [2022-07-19 11:04:11,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 697 transitions. [2022-07-19 11:04:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 11:04:11,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:04:11,993 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1637211528, now seen corresponding path program 1 times [2022-07-19 11:04:11,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267741039] [2022-07-19 11:04:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267741039] [2022-07-19 11:04:12,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267741039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314675767] [2022-07-19 11:04:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:12,103 INFO L87 Difference]: Start difference. First operand 431 states and 697 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:13,655 INFO L93 Difference]: Finished difference Result 886 states and 1429 transitions. [2022-07-19 11:04:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 126 [2022-07-19 11:04:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:13,657 INFO L225 Difference]: With dead ends: 886 [2022-07-19 11:04:13,657 INFO L226 Difference]: Without dead ends: 476 [2022-07-19 11:04:13,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:13,658 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 64 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:13,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-19 11:04:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 434. [2022-07-19 11:04:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.6166281755196306) internal successors, (700), 433 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 700 transitions. [2022-07-19 11:04:13,667 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 700 transitions. Word has length 126 [2022-07-19 11:04:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:13,668 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 700 transitions. [2022-07-19 11:04:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 700 transitions. [2022-07-19 11:04:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 11:04:13,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:13,670 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:13,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:04:13,670 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1634053617, now seen corresponding path program 1 times [2022-07-19 11:04:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:13,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923229237] [2022-07-19 11:04:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:13,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:13,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923229237] [2022-07-19 11:04:13,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923229237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:13,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:13,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:13,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746561057] [2022-07-19 11:04:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:13,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:13,777 INFO L87 Difference]: Start difference. First operand 434 states and 700 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:14,475 INFO L93 Difference]: Finished difference Result 923 states and 1481 transitions. [2022-07-19 11:04:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-19 11:04:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:14,478 INFO L225 Difference]: With dead ends: 923 [2022-07-19 11:04:14,478 INFO L226 Difference]: Without dead ends: 510 [2022-07-19 11:04:14,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:14,479 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:14,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-19 11:04:14,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2022-07-19 11:04:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.5981524249422632) internal successors, (692), 433 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 692 transitions. [2022-07-19 11:04:14,503 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 692 transitions. Word has length 132 [2022-07-19 11:04:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:14,504 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 692 transitions. [2022-07-19 11:04:14,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 692 transitions. [2022-07-19 11:04:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 11:04:14,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:14,506 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:14,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:04:14,506 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -913986916, now seen corresponding path program 1 times [2022-07-19 11:04:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797325777] [2022-07-19 11:04:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797325777] [2022-07-19 11:04:14,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797325777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:14,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:14,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84410482] [2022-07-19 11:04:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:14,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:14,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:14,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:14,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:14,631 INFO L87 Difference]: Start difference. First operand 434 states and 692 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:15,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:16,142 INFO L93 Difference]: Finished difference Result 922 states and 1464 transitions. [2022-07-19 11:04:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:16,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-19 11:04:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:16,144 INFO L225 Difference]: With dead ends: 922 [2022-07-19 11:04:16,144 INFO L226 Difference]: Without dead ends: 509 [2022-07-19 11:04:16,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:16,145 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:16,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 334 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-07-19 11:04:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 434. [2022-07-19 11:04:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.581986143187067) internal successors, (685), 433 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 685 transitions. [2022-07-19 11:04:16,152 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 685 transitions. Word has length 132 [2022-07-19 11:04:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:16,152 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 685 transitions. [2022-07-19 11:04:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 685 transitions. [2022-07-19 11:04:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 11:04:16,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:16,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:16,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:04:16,154 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1172457469, now seen corresponding path program 1 times [2022-07-19 11:04:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:16,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908238422] [2022-07-19 11:04:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 11:04:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:16,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908238422] [2022-07-19 11:04:16,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908238422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:16,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:16,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848556453] [2022-07-19 11:04:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:16,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:16,302 INFO L87 Difference]: Start difference. First operand 434 states and 685 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:17,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:18,164 INFO L93 Difference]: Finished difference Result 857 states and 1358 transitions. [2022-07-19 11:04:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:18,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-07-19 11:04:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:18,166 INFO L225 Difference]: With dead ends: 857 [2022-07-19 11:04:18,167 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 11:04:18,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:18,168 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 147 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:18,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 358 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 11:04:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2022-07-19 11:04:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5746606334841629) internal successors, (696), 442 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 696 transitions. [2022-07-19 11:04:18,177 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 696 transitions. Word has length 133 [2022-07-19 11:04:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:18,177 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 696 transitions. [2022-07-19 11:04:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 696 transitions. [2022-07-19 11:04:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 11:04:18,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:18,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:04:18,179 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1867863608, now seen corresponding path program 1 times [2022-07-19 11:04:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:18,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648588940] [2022-07-19 11:04:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:18,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:18,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648588940] [2022-07-19 11:04:18,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648588940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:18,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:18,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747328211] [2022-07-19 11:04:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:18,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:18,307 INFO L87 Difference]: Start difference. First operand 443 states and 696 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:18,802 INFO L93 Difference]: Finished difference Result 905 states and 1420 transitions. [2022-07-19 11:04:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:18,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 134 [2022-07-19 11:04:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:18,804 INFO L225 Difference]: With dead ends: 905 [2022-07-19 11:04:18,804 INFO L226 Difference]: Without dead ends: 483 [2022-07-19 11:04:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:18,805 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 497 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-19 11:04:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 443. [2022-07-19 11:04:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5723981900452488) internal successors, (695), 442 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 695 transitions. [2022-07-19 11:04:18,816 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 695 transitions. Word has length 134 [2022-07-19 11:04:18,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:18,816 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 695 transitions. [2022-07-19 11:04:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:18,817 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 695 transitions. [2022-07-19 11:04:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 11:04:18,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:18,818 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:18,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:04:18,818 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash -72718406, now seen corresponding path program 1 times [2022-07-19 11:04:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:18,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435379949] [2022-07-19 11:04:18,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:18,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:18,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435379949] [2022-07-19 11:04:18,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435379949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:18,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:18,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518395866] [2022-07-19 11:04:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:18,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:18,923 INFO L87 Difference]: Start difference. First operand 443 states and 695 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:20,303 INFO L93 Difference]: Finished difference Result 886 states and 1392 transitions. [2022-07-19 11:04:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:20,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 134 [2022-07-19 11:04:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:20,304 INFO L225 Difference]: With dead ends: 886 [2022-07-19 11:04:20,304 INFO L226 Difference]: Without dead ends: 464 [2022-07-19 11:04:20,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:20,305 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 45 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:20,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 589 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-19 11:04:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 443. [2022-07-19 11:04:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5701357466063348) internal successors, (694), 442 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 694 transitions. [2022-07-19 11:04:20,314 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 694 transitions. Word has length 134 [2022-07-19 11:04:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:20,314 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 694 transitions. [2022-07-19 11:04:20,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 694 transitions. [2022-07-19 11:04:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 11:04:20,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:20,316 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:20,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:04:20,316 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:20,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 199889873, now seen corresponding path program 1 times [2022-07-19 11:04:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690660294] [2022-07-19 11:04:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:20,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690660294] [2022-07-19 11:04:20,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690660294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:20,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:20,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:20,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502684930] [2022-07-19 11:04:20,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:20,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:20,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:20,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:20,419 INFO L87 Difference]: Start difference. First operand 443 states and 694 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:20,985 INFO L93 Difference]: Finished difference Result 940 states and 1467 transitions. [2022-07-19 11:04:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:20,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 135 [2022-07-19 11:04:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:20,987 INFO L225 Difference]: With dead ends: 940 [2022-07-19 11:04:20,987 INFO L226 Difference]: Without dead ends: 518 [2022-07-19 11:04:20,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:20,988 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 141 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:20,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-19 11:04:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 443. [2022-07-19 11:04:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5520361990950227) internal successors, (686), 442 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 686 transitions. [2022-07-19 11:04:21,009 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 686 transitions. Word has length 135 [2022-07-19 11:04:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:21,009 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 686 transitions. [2022-07-19 11:04:21,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 686 transitions. [2022-07-19 11:04:21,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 11:04:21,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:21,011 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:04:21,012 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -345760781, now seen corresponding path program 1 times [2022-07-19 11:04:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529212994] [2022-07-19 11:04:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:21,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529212994] [2022-07-19 11:04:21,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529212994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:21,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:21,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:21,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367570741] [2022-07-19 11:04:21,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:21,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:21,121 INFO L87 Difference]: Start difference. First operand 443 states and 686 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:22,523 INFO L93 Difference]: Finished difference Result 940 states and 1451 transitions. [2022-07-19 11:04:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 136 [2022-07-19 11:04:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:22,525 INFO L225 Difference]: With dead ends: 940 [2022-07-19 11:04:22,525 INFO L226 Difference]: Without dead ends: 518 [2022-07-19 11:04:22,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:22,526 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 139 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:22,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 362 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-19 11:04:22,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 443. [2022-07-19 11:04:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5339366515837105) internal successors, (678), 442 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 678 transitions. [2022-07-19 11:04:22,536 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 678 transitions. Word has length 136 [2022-07-19 11:04:22,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:22,536 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 678 transitions. [2022-07-19 11:04:22,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:22,536 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 678 transitions. [2022-07-19 11:04:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 11:04:22,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:22,538 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:22,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:04:22,538 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1446475781, now seen corresponding path program 1 times [2022-07-19 11:04:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:22,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404108976] [2022-07-19 11:04:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:22,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:22,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404108976] [2022-07-19 11:04:22,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404108976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:22,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:22,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638756777] [2022-07-19 11:04:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:22,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:22,645 INFO L87 Difference]: Start difference. First operand 443 states and 678 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:23,159 INFO L93 Difference]: Finished difference Result 980 states and 1499 transitions. [2022-07-19 11:04:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:23,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 139 [2022-07-19 11:04:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:23,161 INFO L225 Difference]: With dead ends: 980 [2022-07-19 11:04:23,161 INFO L226 Difference]: Without dead ends: 558 [2022-07-19 11:04:23,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:23,162 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 123 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:23,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 342 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-19 11:04:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 473. [2022-07-19 11:04:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5254237288135593) internal successors, (720), 472 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 720 transitions. [2022-07-19 11:04:23,173 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 720 transitions. Word has length 139 [2022-07-19 11:04:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:23,174 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 720 transitions. [2022-07-19 11:04:23,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 720 transitions. [2022-07-19 11:04:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:04:23,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:23,175 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 11:04:23,176 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1736063103, now seen corresponding path program 1 times [2022-07-19 11:04:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:23,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255351350] [2022-07-19 11:04:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:04:23,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:23,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255351350] [2022-07-19 11:04:23,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255351350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:23,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:23,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917220504] [2022-07-19 11:04:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:23,285 INFO L87 Difference]: Start difference. First operand 473 states and 720 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:24,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:24,829 INFO L93 Difference]: Finished difference Result 955 states and 1456 transitions. [2022-07-19 11:04:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 140 [2022-07-19 11:04:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:24,830 INFO L225 Difference]: With dead ends: 955 [2022-07-19 11:04:24,831 INFO L226 Difference]: Without dead ends: 503 [2022-07-19 11:04:24,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:24,832 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 67 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:24,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 497 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-19 11:04:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 473. [2022-07-19 11:04:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5233050847457628) internal successors, (719), 472 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 719 transitions. [2022-07-19 11:04:24,842 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 719 transitions. Word has length 140 [2022-07-19 11:04:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:24,842 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 719 transitions. [2022-07-19 11:04:24,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 719 transitions. [2022-07-19 11:04:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:04:24,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:24,844 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:24,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 11:04:24,844 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1295902169, now seen corresponding path program 1 times [2022-07-19 11:04:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:24,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705819312] [2022-07-19 11:04:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:24,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:24,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705819312] [2022-07-19 11:04:24,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705819312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:24,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:24,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750890097] [2022-07-19 11:04:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:24,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:24,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:24,990 INFO L87 Difference]: Start difference. First operand 473 states and 719 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:25,592 INFO L93 Difference]: Finished difference Result 953 states and 1452 transitions. [2022-07-19 11:04:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 140 [2022-07-19 11:04:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:25,594 INFO L225 Difference]: With dead ends: 953 [2022-07-19 11:04:25,594 INFO L226 Difference]: Without dead ends: 501 [2022-07-19 11:04:25,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:25,595 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 58 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:25,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 499 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-19 11:04:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 473. [2022-07-19 11:04:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.521186440677966) internal successors, (718), 472 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 718 transitions. [2022-07-19 11:04:25,605 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 718 transitions. Word has length 140 [2022-07-19 11:04:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:25,606 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 718 transitions. [2022-07-19 11:04:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 718 transitions. [2022-07-19 11:04:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:04:25,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:25,607 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:25,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 11:04:25,608 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash -957833087, now seen corresponding path program 1 times [2022-07-19 11:04:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:25,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291529846] [2022-07-19 11:04:25,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:25,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:25,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291529846] [2022-07-19 11:04:25,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291529846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:25,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:25,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646484714] [2022-07-19 11:04:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:25,743 INFO L87 Difference]: Start difference. First operand 473 states and 718 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:26,231 INFO L93 Difference]: Finished difference Result 1000 states and 1515 transitions. [2022-07-19 11:04:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 140 [2022-07-19 11:04:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:26,233 INFO L225 Difference]: With dead ends: 1000 [2022-07-19 11:04:26,233 INFO L226 Difference]: Without dead ends: 548 [2022-07-19 11:04:26,234 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:26,234 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:26,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 362 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-19 11:04:26,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 473. [2022-07-19 11:04:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5169491525423728) internal successors, (716), 472 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 716 transitions. [2022-07-19 11:04:26,245 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 716 transitions. Word has length 140 [2022-07-19 11:04:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:26,246 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 716 transitions. [2022-07-19 11:04:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 716 transitions. [2022-07-19 11:04:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 11:04:26,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:26,247 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:26,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 11:04:26,248 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:26,248 INFO L85 PathProgramCache]: Analyzing trace with hash -249014880, now seen corresponding path program 1 times [2022-07-19 11:04:26,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:26,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711067736] [2022-07-19 11:04:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:26,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:26,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711067736] [2022-07-19 11:04:26,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711067736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:26,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:26,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408482933] [2022-07-19 11:04:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:26,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:26,374 INFO L87 Difference]: Start difference. First operand 473 states and 716 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:27,063 INFO L93 Difference]: Finished difference Result 1040 states and 1573 transitions. [2022-07-19 11:04:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 142 [2022-07-19 11:04:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:27,065 INFO L225 Difference]: With dead ends: 1040 [2022-07-19 11:04:27,065 INFO L226 Difference]: Without dead ends: 588 [2022-07-19 11:04:27,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:27,066 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 124 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:27,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 362 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-07-19 11:04:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 501. [2022-07-19 11:04:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.506) internal successors, (753), 500 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 753 transitions. [2022-07-19 11:04:27,078 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 753 transitions. Word has length 142 [2022-07-19 11:04:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:27,079 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 753 transitions. [2022-07-19 11:04:27,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 753 transitions. [2022-07-19 11:04:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 11:04:27,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:27,081 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:27,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 11:04:27,081 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1298036834, now seen corresponding path program 1 times [2022-07-19 11:04:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:27,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573630077] [2022-07-19 11:04:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:04:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573630077] [2022-07-19 11:04:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573630077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:27,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113566200] [2022-07-19 11:04:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:27,205 INFO L87 Difference]: Start difference. First operand 501 states and 753 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:27,895 INFO L93 Difference]: Finished difference Result 1056 states and 1585 transitions. [2022-07-19 11:04:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 143 [2022-07-19 11:04:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:27,897 INFO L225 Difference]: With dead ends: 1056 [2022-07-19 11:04:27,897 INFO L226 Difference]: Without dead ends: 576 [2022-07-19 11:04:27,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:27,898 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 123 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:27,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-07-19 11:04:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 501. [2022-07-19 11:04:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.492) internal successors, (746), 500 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 746 transitions. [2022-07-19 11:04:27,910 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 746 transitions. Word has length 143 [2022-07-19 11:04:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:27,911 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 746 transitions. [2022-07-19 11:04:27,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 746 transitions. [2022-07-19 11:04:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 11:04:27,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:27,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 11:04:27,913 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash -279579614, now seen corresponding path program 1 times [2022-07-19 11:04:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:27,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92302644] [2022-07-19 11:04:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 11:04:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92302644] [2022-07-19 11:04:28,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92302644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:28,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:28,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161825523] [2022-07-19 11:04:28,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:28,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,048 INFO L87 Difference]: Start difference. First operand 501 states and 746 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:28,089 INFO L93 Difference]: Finished difference Result 1453 states and 2177 transitions. [2022-07-19 11:04:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 148 [2022-07-19 11:04:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:28,093 INFO L225 Difference]: With dead ends: 1453 [2022-07-19 11:04:28,093 INFO L226 Difference]: Without dead ends: 973 [2022-07-19 11:04:28,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,094 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 131 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:28,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 435 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:28,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-19 11:04:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2022-07-19 11:04:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4917525773195877) internal successors, (1447), 970 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1447 transitions. [2022-07-19 11:04:28,116 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1447 transitions. Word has length 148 [2022-07-19 11:04:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:28,116 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1447 transitions. [2022-07-19 11:04:28,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1447 transitions. [2022-07-19 11:04:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 11:04:28,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:28,119 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:28,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 11:04:28,119 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1873527204, now seen corresponding path program 1 times [2022-07-19 11:04:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001242969] [2022-07-19 11:04:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 11:04:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:28,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001242969] [2022-07-19 11:04:28,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001242969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:28,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:28,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869868519] [2022-07-19 11:04:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,209 INFO L87 Difference]: Start difference. First operand 971 states and 1447 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:28,247 INFO L93 Difference]: Finished difference Result 1948 states and 2906 transitions. [2022-07-19 11:04:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:28,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 148 [2022-07-19 11:04:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:28,251 INFO L225 Difference]: With dead ends: 1948 [2022-07-19 11:04:28,252 INFO L226 Difference]: Without dead ends: 998 [2022-07-19 11:04:28,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,254 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:28,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 410 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-07-19 11:04:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2022-07-19 11:04:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.4864593781344033) internal successors, (1482), 997 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1482 transitions. [2022-07-19 11:04:28,277 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1482 transitions. Word has length 148 [2022-07-19 11:04:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:28,277 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1482 transitions. [2022-07-19 11:04:28,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1482 transitions. [2022-07-19 11:04:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 11:04:28,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:28,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:28,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 11:04:28,280 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:28,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1439021606, now seen corresponding path program 1 times [2022-07-19 11:04:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:28,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118301898] [2022-07-19 11:04:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-19 11:04:28,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:28,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118301898] [2022-07-19 11:04:28,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118301898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:28,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:28,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:28,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629082539] [2022-07-19 11:04:28,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:28,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:28,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,378 INFO L87 Difference]: Start difference. First operand 998 states and 1482 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:28,411 INFO L93 Difference]: Finished difference Result 1977 states and 2942 transitions. [2022-07-19 11:04:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:28,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-19 11:04:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:28,415 INFO L225 Difference]: With dead ends: 1977 [2022-07-19 11:04:28,416 INFO L226 Difference]: Without dead ends: 1000 [2022-07-19 11:04:28,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:28,418 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:28,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 389 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-19 11:04:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2022-07-19 11:04:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4854854854854855) internal successors, (1484), 999 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1484 transitions. [2022-07-19 11:04:28,441 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1484 transitions. Word has length 148 [2022-07-19 11:04:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:28,442 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1484 transitions. [2022-07-19 11:04:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1484 transitions. [2022-07-19 11:04:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 11:04:28,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:28,444 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 11:04:28,444 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:28,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1628965976, now seen corresponding path program 1 times [2022-07-19 11:04:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:28,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498719268] [2022-07-19 11:04:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:28,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:04:28,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:28,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498719268] [2022-07-19 11:04:28,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498719268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:28,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:28,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:28,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19182969] [2022-07-19 11:04:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:28,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:28,581 INFO L87 Difference]: Start difference. First operand 1000 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:29,635 INFO L93 Difference]: Finished difference Result 2018 states and 2992 transitions. [2022-07-19 11:04:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 149 [2022-07-19 11:04:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:29,638 INFO L225 Difference]: With dead ends: 2018 [2022-07-19 11:04:29,638 INFO L226 Difference]: Without dead ends: 1041 [2022-07-19 11:04:29,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:29,640 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 42 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:29,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 515 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:04:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-07-19 11:04:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1000. [2022-07-19 11:04:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4834834834834836) internal successors, (1482), 999 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1482 transitions. [2022-07-19 11:04:29,656 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1482 transitions. Word has length 149 [2022-07-19 11:04:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:29,656 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1482 transitions. [2022-07-19 11:04:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1482 transitions. [2022-07-19 11:04:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 11:04:29,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:29,657 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:29,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 11:04:29,658 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1974067073, now seen corresponding path program 1 times [2022-07-19 11:04:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035127442] [2022-07-19 11:04:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 11:04:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:29,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035127442] [2022-07-19 11:04:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035127442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:29,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364626625] [2022-07-19 11:04:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:29,763 INFO L87 Difference]: Start difference. First operand 1000 states and 1482 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:30,539 INFO L93 Difference]: Finished difference Result 2124 states and 3135 transitions. [2022-07-19 11:04:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:30,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2022-07-19 11:04:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:30,542 INFO L225 Difference]: With dead ends: 2124 [2022-07-19 11:04:30,542 INFO L226 Difference]: Without dead ends: 1147 [2022-07-19 11:04:30,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:30,544 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 115 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:30,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-07-19 11:04:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1000. [2022-07-19 11:04:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4754754754754755) internal successors, (1474), 999 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1474 transitions. [2022-07-19 11:04:30,562 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1474 transitions. Word has length 150 [2022-07-19 11:04:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:30,562 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1474 transitions. [2022-07-19 11:04:30,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1474 transitions. [2022-07-19 11:04:30,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 11:04:30,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:30,564 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 11:04:30,564 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:30,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2131671941, now seen corresponding path program 1 times [2022-07-19 11:04:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:30,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177693569] [2022-07-19 11:04:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 11:04:30,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:30,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177693569] [2022-07-19 11:04:30,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177693569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:30,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:30,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278503793] [2022-07-19 11:04:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:30,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:30,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:30,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:30,710 INFO L87 Difference]: Start difference. First operand 1000 states and 1474 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:31,985 INFO L93 Difference]: Finished difference Result 2575 states and 3791 transitions. [2022-07-19 11:04:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-19 11:04:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:31,990 INFO L225 Difference]: With dead ends: 2575 [2022-07-19 11:04:31,990 INFO L226 Difference]: Without dead ends: 1598 [2022-07-19 11:04:31,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:31,991 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 88 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:31,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 774 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-07-19 11:04:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1558. [2022-07-19 11:04:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 1.4752729608220938) internal successors, (2297), 1557 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2297 transitions. [2022-07-19 11:04:32,031 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2297 transitions. Word has length 150 [2022-07-19 11:04:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:32,032 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2297 transitions. [2022-07-19 11:04:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2297 transitions. [2022-07-19 11:04:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 11:04:32,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:32,034 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:32,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 11:04:32,034 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:32,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash -854769225, now seen corresponding path program 1 times [2022-07-19 11:04:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:32,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594402602] [2022-07-19 11:04:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:32,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:32,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594402602] [2022-07-19 11:04:32,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594402602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:32,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:32,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:32,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758601230] [2022-07-19 11:04:32,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:32,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:32,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:32,154 INFO L87 Difference]: Start difference. First operand 1558 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:32,818 INFO L93 Difference]: Finished difference Result 3138 states and 4624 transitions. [2022-07-19 11:04:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 [2022-07-19 11:04:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:32,823 INFO L225 Difference]: With dead ends: 3138 [2022-07-19 11:04:32,823 INFO L226 Difference]: Without dead ends: 1603 [2022-07-19 11:04:32,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:32,825 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 45 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:32,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 511 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-07-19 11:04:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1558. [2022-07-19 11:04:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 1.4733461785484907) internal successors, (2294), 1557 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2294 transitions. [2022-07-19 11:04:32,855 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2294 transitions. Word has length 151 [2022-07-19 11:04:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:32,855 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2294 transitions. [2022-07-19 11:04:32,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2294 transitions. [2022-07-19 11:04:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 11:04:32,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:32,857 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:32,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 11:04:32,858 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:32,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1018882254, now seen corresponding path program 1 times [2022-07-19 11:04:32,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:32,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726263764] [2022-07-19 11:04:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:32,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:32,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726263764] [2022-07-19 11:04:32,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726263764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:32,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:32,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670687112] [2022-07-19 11:04:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:32,960 INFO L87 Difference]: Start difference. First operand 1558 states and 2294 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:33,880 INFO L93 Difference]: Finished difference Result 3479 states and 5105 transitions. [2022-07-19 11:04:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 [2022-07-19 11:04:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:33,886 INFO L225 Difference]: With dead ends: 3479 [2022-07-19 11:04:33,886 INFO L226 Difference]: Without dead ends: 1944 [2022-07-19 11:04:33,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:33,888 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 124 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:33,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 404 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:33,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-07-19 11:04:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1662. [2022-07-19 11:04:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.461167971101746) internal successors, (2427), 1661 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2427 transitions. [2022-07-19 11:04:33,918 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2427 transitions. Word has length 156 [2022-07-19 11:04:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:33,918 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2427 transitions. [2022-07-19 11:04:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2427 transitions. [2022-07-19 11:04:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-19 11:04:33,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:33,920 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 11:04:33,920 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -123558484, now seen corresponding path program 1 times [2022-07-19 11:04:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:33,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385683291] [2022-07-19 11:04:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:34,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385683291] [2022-07-19 11:04:34,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385683291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:34,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:34,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:34,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625075158] [2022-07-19 11:04:34,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:34,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:34,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:34,024 INFO L87 Difference]: Start difference. First operand 1662 states and 2427 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:34,682 INFO L93 Difference]: Finished difference Result 3340 states and 4875 transitions. [2022-07-19 11:04:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:34,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 157 [2022-07-19 11:04:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:34,687 INFO L225 Difference]: With dead ends: 3340 [2022-07-19 11:04:34,688 INFO L226 Difference]: Without dead ends: 1701 [2022-07-19 11:04:34,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:34,690 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 40 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:34,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 517 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-19 11:04:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1662. [2022-07-19 11:04:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.4593618302227573) internal successors, (2424), 1661 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2424 transitions. [2022-07-19 11:04:34,720 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2424 transitions. Word has length 157 [2022-07-19 11:04:34,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:34,721 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2424 transitions. [2022-07-19 11:04:34,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:34,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2424 transitions. [2022-07-19 11:04:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 11:04:34,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:34,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 11:04:34,724 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1634604496, now seen corresponding path program 1 times [2022-07-19 11:04:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:34,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950948809] [2022-07-19 11:04:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:34,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950948809] [2022-07-19 11:04:34,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950948809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:34,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:34,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:34,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255831844] [2022-07-19 11:04:34,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:34,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:34,828 INFO L87 Difference]: Start difference. First operand 1662 states and 2424 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:35,735 INFO L93 Difference]: Finished difference Result 3340 states and 4869 transitions. [2022-07-19 11:04:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:35,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 159 [2022-07-19 11:04:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:35,740 INFO L225 Difference]: With dead ends: 3340 [2022-07-19 11:04:35,740 INFO L226 Difference]: Without dead ends: 1701 [2022-07-19 11:04:35,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:35,742 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 33 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:35,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 517 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-19 11:04:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1662. [2022-07-19 11:04:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.457555689343769) internal successors, (2421), 1661 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2421 transitions. [2022-07-19 11:04:35,786 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2421 transitions. Word has length 159 [2022-07-19 11:04:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:35,786 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2421 transitions. [2022-07-19 11:04:35,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2421 transitions. [2022-07-19 11:04:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 11:04:35,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:35,788 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 11:04:35,788 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 775287959, now seen corresponding path program 1 times [2022-07-19 11:04:35,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416185980] [2022-07-19 11:04:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 11:04:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:35,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416185980] [2022-07-19 11:04:35,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416185980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:35,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:35,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495355329] [2022-07-19 11:04:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:35,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:35,895 INFO L87 Difference]: Start difference. First operand 1662 states and 2421 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:37,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:38,015 INFO L93 Difference]: Finished difference Result 3328 states and 4848 transitions. [2022-07-19 11:04:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-07-19 11:04:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:38,018 INFO L225 Difference]: With dead ends: 3328 [2022-07-19 11:04:38,018 INFO L226 Difference]: Without dead ends: 1689 [2022-07-19 11:04:38,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:38,020 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 28 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 521 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 11:04:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-07-19 11:04:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1651. [2022-07-19 11:04:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4587878787878787) internal successors, (2407), 1650 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2407 transitions. [2022-07-19 11:04:38,069 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2407 transitions. Word has length 160 [2022-07-19 11:04:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:38,069 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2407 transitions. [2022-07-19 11:04:38,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2407 transitions. [2022-07-19 11:04:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 11:04:38,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:38,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 11:04:38,073 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899985, now seen corresponding path program 1 times [2022-07-19 11:04:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:38,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62431338] [2022-07-19 11:04:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 11:04:38,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:38,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62431338] [2022-07-19 11:04:38,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62431338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:38,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:38,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:38,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169608820] [2022-07-19 11:04:38,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:38,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:38,184 INFO L87 Difference]: Start difference. First operand 1651 states and 2407 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:38,907 INFO L93 Difference]: Finished difference Result 3353 states and 4879 transitions. [2022-07-19 11:04:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 162 [2022-07-19 11:04:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:38,910 INFO L225 Difference]: With dead ends: 3353 [2022-07-19 11:04:38,910 INFO L226 Difference]: Without dead ends: 1725 [2022-07-19 11:04:38,911 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:38,912 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 36 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:38,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 554 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-07-19 11:04:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1651. [2022-07-19 11:04:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4563636363636363) internal successors, (2403), 1650 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2403 transitions. [2022-07-19 11:04:38,948 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2403 transitions. Word has length 162 [2022-07-19 11:04:38,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:38,948 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2403 transitions. [2022-07-19 11:04:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2403 transitions. [2022-07-19 11:04:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 11:04:38,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:38,950 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 11:04:38,951 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1834613916, now seen corresponding path program 1 times [2022-07-19 11:04:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:38,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934116748] [2022-07-19 11:04:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 11:04:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:39,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934116748] [2022-07-19 11:04:39,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934116748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:39,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377751566] [2022-07-19 11:04:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:39,069 INFO L87 Difference]: Start difference. First operand 1651 states and 2403 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:40,533 INFO L93 Difference]: Finished difference Result 3333 states and 4847 transitions. [2022-07-19 11:04:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:40,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 166 [2022-07-19 11:04:40,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:40,536 INFO L225 Difference]: With dead ends: 3333 [2022-07-19 11:04:40,536 INFO L226 Difference]: Without dead ends: 1705 [2022-07-19 11:04:40,538 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:40,538 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 41 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:40,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 567 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-19 11:04:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1651. [2022-07-19 11:04:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4539393939393939) internal successors, (2399), 1650 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2399 transitions. [2022-07-19 11:04:40,570 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2399 transitions. Word has length 166 [2022-07-19 11:04:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:40,570 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2399 transitions. [2022-07-19 11:04:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2399 transitions. [2022-07-19 11:04:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 11:04:40,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:40,573 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:40,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 11:04:40,573 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1770149235, now seen corresponding path program 1 times [2022-07-19 11:04:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:40,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486933086] [2022-07-19 11:04:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:40,676 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 11:04:40,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:40,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486933086] [2022-07-19 11:04:40,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486933086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:40,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:40,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:40,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990673812] [2022-07-19 11:04:40,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:40,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:40,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:40,678 INFO L87 Difference]: Start difference. First operand 1651 states and 2399 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:40,771 INFO L93 Difference]: Finished difference Result 4051 states and 5908 transitions. [2022-07-19 11:04:40,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 167 [2022-07-19 11:04:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:40,776 INFO L225 Difference]: With dead ends: 4051 [2022-07-19 11:04:40,776 INFO L226 Difference]: Without dead ends: 2423 [2022-07-19 11:04:40,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:40,779 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:40,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 563 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2022-07-19 11:04:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2423. [2022-07-19 11:04:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 1.453757225433526) internal successors, (3521), 2422 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3521 transitions. [2022-07-19 11:04:40,835 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3521 transitions. Word has length 167 [2022-07-19 11:04:40,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:40,836 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3521 transitions. [2022-07-19 11:04:40,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3521 transitions. [2022-07-19 11:04:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-19 11:04:40,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:40,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:40,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 11:04:40,840 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:40,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1609317893, now seen corresponding path program 1 times [2022-07-19 11:04:40,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:40,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055901785] [2022-07-19 11:04:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:40,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:40,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:40,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055901785] [2022-07-19 11:04:40,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055901785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:40,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:40,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83030704] [2022-07-19 11:04:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:40,954 INFO L87 Difference]: Start difference. First operand 2423 states and 3521 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,046 INFO L93 Difference]: Finished difference Result 5557 states and 8094 transitions. [2022-07-19 11:04:41,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:41,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 168 [2022-07-19 11:04:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,054 INFO L225 Difference]: With dead ends: 5557 [2022-07-19 11:04:41,054 INFO L226 Difference]: Without dead ends: 3157 [2022-07-19 11:04:41,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:41,058 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-07-19 11:04:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3149. [2022-07-19 11:04:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 3148 states have (on average 1.454891994917408) internal successors, (4580), 3148 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4580 transitions. [2022-07-19 11:04:41,166 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4580 transitions. Word has length 168 [2022-07-19 11:04:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:41,166 INFO L495 AbstractCegarLoop]: Abstraction has 3149 states and 4580 transitions. [2022-07-19 11:04:41,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4580 transitions. [2022-07-19 11:04:41,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 11:04:41,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:41,171 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:41,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-19 11:04:41,171 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1316484344, now seen corresponding path program 1 times [2022-07-19 11:04:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:41,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037564734] [2022-07-19 11:04:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 11:04:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:41,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037564734] [2022-07-19 11:04:41,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037564734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:41,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:41,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516310177] [2022-07-19 11:04:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:41,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:41,298 INFO L87 Difference]: Start difference. First operand 3149 states and 4580 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:41,921 INFO L93 Difference]: Finished difference Result 6677 states and 9684 transitions. [2022-07-19 11:04:41,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 178 [2022-07-19 11:04:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:41,946 INFO L225 Difference]: With dead ends: 6677 [2022-07-19 11:04:41,947 INFO L226 Difference]: Without dead ends: 3551 [2022-07-19 11:04:41,949 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:41,951 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 106 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:41,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 411 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2022-07-19 11:04:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3281. [2022-07-19 11:04:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.454268292682927) internal successors, (4770), 3280 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4770 transitions. [2022-07-19 11:04:42,055 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4770 transitions. Word has length 178 [2022-07-19 11:04:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:42,055 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4770 transitions. [2022-07-19 11:04:42,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4770 transitions. [2022-07-19 11:04:42,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 11:04:42,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:42,060 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:42,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-19 11:04:42,060 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -778688125, now seen corresponding path program 1 times [2022-07-19 11:04:42,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:42,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283136587] [2022-07-19 11:04:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 11:04:42,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:42,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283136587] [2022-07-19 11:04:42,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283136587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:42,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:42,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970499459] [2022-07-19 11:04:42,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:42,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:42,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:42,182 INFO L87 Difference]: Start difference. First operand 3281 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:43,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:44,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:44,009 INFO L93 Difference]: Finished difference Result 6717 states and 9743 transitions. [2022-07-19 11:04:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:44,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 179 [2022-07-19 11:04:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:44,018 INFO L225 Difference]: With dead ends: 6717 [2022-07-19 11:04:44,018 INFO L226 Difference]: Without dead ends: 3459 [2022-07-19 11:04:44,022 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:44,025 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 46 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 572 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2022-07-19 11:04:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3281. [2022-07-19 11:04:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.451829268292683) internal successors, (4762), 3280 states have internal predecessors, (4762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4762 transitions. [2022-07-19 11:04:44,144 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4762 transitions. Word has length 179 [2022-07-19 11:04:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:44,145 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4762 transitions. [2022-07-19 11:04:44,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4762 transitions. [2022-07-19 11:04:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-19 11:04:44,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:44,148 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:44,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-19 11:04:44,148 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2097633660, now seen corresponding path program 1 times [2022-07-19 11:04:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:44,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786046084] [2022-07-19 11:04:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:44,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-19 11:04:44,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:44,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786046084] [2022-07-19 11:04:44,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786046084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:44,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:44,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:44,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564341986] [2022-07-19 11:04:44,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:44,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:44,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:44,267 INFO L87 Difference]: Start difference. First operand 3281 states and 4762 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:45,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:45,891 INFO L93 Difference]: Finished difference Result 6818 states and 9868 transitions. [2022-07-19 11:04:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 181 [2022-07-19 11:04:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:45,900 INFO L225 Difference]: With dead ends: 6818 [2022-07-19 11:04:45,900 INFO L226 Difference]: Without dead ends: 3560 [2022-07-19 11:04:45,904 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:45,905 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 118 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:45,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 342 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:04:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-07-19 11:04:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3281. [2022-07-19 11:04:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.4414634146341463) internal successors, (4728), 3280 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4728 transitions. [2022-07-19 11:04:46,019 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4728 transitions. Word has length 181 [2022-07-19 11:04:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:46,020 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4728 transitions. [2022-07-19 11:04:46,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4728 transitions. [2022-07-19 11:04:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-19 11:04:46,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:46,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:46,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-19 11:04:46,024 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2085864285, now seen corresponding path program 1 times [2022-07-19 11:04:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:46,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365919656] [2022-07-19 11:04:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 11:04:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:46,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365919656] [2022-07-19 11:04:46,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365919656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:46,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:46,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421560182] [2022-07-19 11:04:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:46,136 INFO L87 Difference]: Start difference. First operand 3281 states and 4728 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:47,401 INFO L93 Difference]: Finished difference Result 7288 states and 10467 transitions. [2022-07-19 11:04:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:47,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 190 [2022-07-19 11:04:47,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:47,407 INFO L225 Difference]: With dead ends: 7288 [2022-07-19 11:04:47,407 INFO L226 Difference]: Without dead ends: 4030 [2022-07-19 11:04:47,411 INFO L412 NwaCegarLoop]: 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 [2022-07-19 11:04:47,412 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 112 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 350 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-07-19 11:04:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3561. [2022-07-19 11:04:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.4373595505617978) internal successors, (5117), 3560 states have internal predecessors, (5117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5117 transitions. [2022-07-19 11:04:47,531 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5117 transitions. Word has length 190 [2022-07-19 11:04:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:47,531 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5117 transitions. [2022-07-19 11:04:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5117 transitions. [2022-07-19 11:04:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 11:04:47,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:47,535 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-19 11:04:47,536 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1353374457, now seen corresponding path program 1 times [2022-07-19 11:04:47,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:47,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696331006] [2022-07-19 11:04:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-19 11:04:48,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:48,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696331006] [2022-07-19 11:04:48,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696331006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:48,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:48,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533693884] [2022-07-19 11:04:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:48,150 INFO L87 Difference]: Start difference. First operand 3561 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:49,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:50,739 INFO L93 Difference]: Finished difference Result 7119 states and 10230 transitions. [2022-07-19 11:04:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-07-19 11:04:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:50,745 INFO L225 Difference]: With dead ends: 7119 [2022-07-19 11:04:50,745 INFO L226 Difference]: Without dead ends: 3561 [2022-07-19 11:04:50,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:50,750 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:50,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 11:04:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-07-19 11:04:50,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3561. [2022-07-19 11:04:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.4370786516853933) internal successors, (5116), 3560 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5116 transitions. [2022-07-19 11:04:50,845 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5116 transitions. Word has length 192 [2022-07-19 11:04:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:50,845 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5116 transitions. [2022-07-19 11:04:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5116 transitions. [2022-07-19 11:04:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 11:04:50,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:50,849 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-19 11:04:50,849 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1826610107, now seen corresponding path program 1 times [2022-07-19 11:04:50,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:50,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885102872] [2022-07-19 11:04:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:50,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-19 11:04:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885102872] [2022-07-19 11:04:52,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885102872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123937074] [2022-07-19 11:04:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:52,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:52,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:52,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:04:52,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:04:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:53,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 190 conjunts are in the unsatisfiable core [2022-07-19 11:04:53,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,099 INFO L356 Elim1Store]: treesize reduction 520, result has 8.1 percent of original size [2022-07-19 11:04:56,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 1464934 treesize of output 1335204 [2022-07-19 11:04:56,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:56,350 INFO L190 IndexEqualityManager]: detected not equals via solver