./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-1.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 fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:52:26,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:52:26,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:52:27,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:52:27,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:52:27,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:52:27,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:52:27,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:52:27,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:52:27,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:52:27,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:52:27,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:52:27,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:52:27,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:52:27,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:52:27,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:52:27,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:52:27,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:52:27,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:52:27,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:52:27,049 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:52:27,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:52:27,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:52:27,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:52:27,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:52:27,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:52:27,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:52:27,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:52:27,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:52:27,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:52:27,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:52:27,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:52:27,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:52:27,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:52:27,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:52:27,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:52:27,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:52:27,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:52:27,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:52:27,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:52:27,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:52:27,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:52:27,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:52:27,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:52:27,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:52:27,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:52:27,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:52:27,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:52:27,093 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:52:27,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:52:27,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:52:27,093 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:52:27,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:52:27,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:52:27,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:52:27,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:52:27,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:52:27,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:52:27,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:52:27,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:52:27,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:52:27,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:52:27,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:52:27,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:52:27,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:52:27,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:52:27,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2022-07-11 23:52:27,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:52:27,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:52:27,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:52:27,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:52:27,312 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:52:27,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2022-07-11 23:52:27,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b8fc7f/44bf14f397fb4c0e8c0649eaa6abb505/FLAG784d6682a [2022-07-11 23:52:27,800 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:52:27,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2022-07-11 23:52:27,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b8fc7f/44bf14f397fb4c0e8c0649eaa6abb505/FLAG784d6682a [2022-07-11 23:52:27,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b8fc7f/44bf14f397fb4c0e8c0649eaa6abb505 [2022-07-11 23:52:27,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:52:27,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:52:27,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:52:27,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:52:27,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:52:27,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:52:27" (1/1) ... [2022-07-11 23:52:27,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ac340e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:27, skipping insertion in model container [2022-07-11 23:52:27,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:52:27" (1/1) ... [2022-07-11 23:52:27,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:52:27,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:52:28,154 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-1.c[74696,74709] [2022-07-11 23:52:28,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:52:28,172 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:52:28,274 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-1.c[74696,74709] [2022-07-11 23:52:28,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:52:28,288 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:52:28,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28 WrapperNode [2022-07-11 23:52:28,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:52:28,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:52:28,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:52:28,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:52:28,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,365 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 794 [2022-07-11 23:52:28,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:52:28,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:52:28,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:52:28,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:52:28,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:52:28,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:52:28,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:52:28,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:52:28,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (1/1) ... [2022-07-11 23:52:28,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:52:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:52:28,442 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) [2022-07-11 23:52:28,462 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 [2022-07-11 23:52:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:52:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-11 23:52:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:52:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:52:28,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-11 23:52:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:52:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-11 23:52:28,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:52:28,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:52:28,591 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:52:28,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:52:28,614 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:52:29,533 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-11 23:52:29,534 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-11 23:52:29,534 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:52:29,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:52:29,540 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:52:29,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:52:29 BoogieIcfgContainer [2022-07-11 23:52:29,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:52:29,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:52:29,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:52:29,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:52:29,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:52:27" (1/3) ... [2022-07-11 23:52:29,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554c5206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:52:29, skipping insertion in model container [2022-07-11 23:52:29,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:28" (2/3) ... [2022-07-11 23:52:29,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554c5206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:52:29, skipping insertion in model container [2022-07-11 23:52:29,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:52:29" (3/3) ... [2022-07-11 23:52:29,550 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2022-07-11 23:52:29,560 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:52:29,560 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:52:29,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:52:29,620 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@5193f38b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@707a3a34 [2022-07-11 23:52:29,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:52:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 23:52:29,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:29,641 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] [2022-07-11 23:52:29,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2022-07-11 23:52:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651764022] [2022-07-11 23:52:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:30,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:30,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:30,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651764022] [2022-07-11 23:52:30,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651764022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:30,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:30,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376392181] [2022-07-11 23:52:30,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:30,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:30,079 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 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 11.25) 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) [2022-07-11 23:52:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:30,828 INFO L93 Difference]: Finished difference Result 423 states and 720 transitions. [2022-07-11 23:52:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:30,830 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 [2022-07-11 23:52:30,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:30,837 INFO L225 Difference]: With dead ends: 423 [2022-07-11 23:52:30,838 INFO L226 Difference]: Without dead ends: 257 [2022-07-11 23:52:30,840 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 [2022-07-11 23:52:30,842 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 156 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:30,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 447 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-11 23:52:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 178. [2022-07-11 23:52:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.6101694915254237) internal successors, (285), 177 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 285 transitions. [2022-07-11 23:52:30,884 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 285 transitions. Word has length 45 [2022-07-11 23:52:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:30,885 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 285 transitions. [2022-07-11 23:52:30,885 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) [2022-07-11 23:52:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 285 transitions. [2022-07-11 23:52:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-11 23:52:30,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:30,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:30,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:52:30,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -996579501, now seen corresponding path program 1 times [2022-07-11 23:52:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:30,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539385301] [2022-07-11 23:52:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:31,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539385301] [2022-07-11 23:52:31,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539385301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:31,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:31,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643568213] [2022-07-11 23:52:31,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:31,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:31,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:31,011 INFO L87 Difference]: Start difference. First operand 178 states and 285 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:31,496 INFO L93 Difference]: Finished difference Result 464 states and 740 transitions. [2022-07-11 23:52:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:31,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-11 23:52:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:31,498 INFO L225 Difference]: With dead ends: 464 [2022-07-11 23:52:31,499 INFO L226 Difference]: Without dead ends: 296 [2022-07-11 23:52:31,499 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 [2022-07-11 23:52:31,500 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:31,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 360 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-11 23:52:31,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 218. [2022-07-11 23:52:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.6543778801843319) internal successors, (359), 217 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 359 transitions. [2022-07-11 23:52:31,525 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 359 transitions. Word has length 46 [2022-07-11 23:52:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:31,527 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 359 transitions. [2022-07-11 23:52:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 359 transitions. [2022-07-11 23:52:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-11 23:52:31,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:31,531 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:52:31,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:31,538 INFO L85 PathProgramCache]: Analyzing trace with hash 330663453, now seen corresponding path program 1 times [2022-07-11 23:52:31,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:31,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047127568] [2022-07-11 23:52:31,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:31,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:31,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047127568] [2022-07-11 23:52:31,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047127568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:31,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:31,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491119987] [2022-07-11 23:52:31,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:31,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:31,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:31,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:31,711 INFO L87 Difference]: Start difference. First operand 218 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:32,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:33,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:33,209 INFO L93 Difference]: Finished difference Result 580 states and 955 transitions. [2022-07-11 23:52:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:33,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-07-11 23:52:33,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:33,211 INFO L225 Difference]: With dead ends: 580 [2022-07-11 23:52:33,211 INFO L226 Difference]: Without dead ends: 372 [2022-07-11 23:52:33,212 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 [2022-07-11 23:52:33,213 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 127 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:33,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 374 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:52:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-11 23:52:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 282. [2022-07-11 23:52:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.690391459074733) internal successors, (475), 281 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 475 transitions. [2022-07-11 23:52:33,225 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 475 transitions. Word has length 74 [2022-07-11 23:52:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:33,226 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 475 transitions. [2022-07-11 23:52:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 475 transitions. [2022-07-11 23:52:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-11 23:52:33,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:33,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1] [2022-07-11 23:52:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:52:33,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash 579944780, now seen corresponding path program 1 times [2022-07-11 23:52:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:33,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22263513] [2022-07-11 23:52:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-11 23:52:33,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:33,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22263513] [2022-07-11 23:52:33,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22263513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:33,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:33,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790953952] [2022-07-11 23:52:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:33,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:33,333 INFO L87 Difference]: Start difference. First operand 282 states and 475 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) [2022-07-11 23:52:34,623 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 [] [2022-07-11 23:52:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:34,811 INFO L93 Difference]: Finished difference Result 582 states and 977 transitions. [2022-07-11 23:52:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:34,812 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 79 [2022-07-11 23:52:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:34,813 INFO L225 Difference]: With dead ends: 582 [2022-07-11 23:52:34,813 INFO L226 Difference]: Without dead ends: 310 [2022-07-11 23:52:34,813 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 [2022-07-11 23:52:34,814 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:34,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 475 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:52:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-11 23:52:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-11 23:52:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6917808219178083) internal successors, (494), 292 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 494 transitions. [2022-07-11 23:52:34,820 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 494 transitions. Word has length 79 [2022-07-11 23:52:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:34,821 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 494 transitions. [2022-07-11 23:52:34,821 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) [2022-07-11 23:52:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 494 transitions. [2022-07-11 23:52:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-11 23:52:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:34,822 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-11 23:52:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:52:34,822 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1317916975, now seen corresponding path program 1 times [2022-07-11 23:52:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240966628] [2022-07-11 23:52:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-11 23:52:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:34,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240966628] [2022-07-11 23:52:34,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240966628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:34,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:34,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:34,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347394119] [2022-07-11 23:52:34,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:34,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:34,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:34,897 INFO L87 Difference]: Start difference. First operand 293 states and 494 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) [2022-07-11 23:52:36,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:36,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:36,547 INFO L93 Difference]: Finished difference Result 582 states and 976 transitions. [2022-07-11 23:52:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:36,548 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 87 [2022-07-11 23:52:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:36,549 INFO L225 Difference]: With dead ends: 582 [2022-07-11 23:52:36,549 INFO L226 Difference]: Without dead ends: 310 [2022-07-11 23:52:36,550 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 [2022-07-11 23:52:36,550 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 24 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:36,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 477 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:52:36,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-11 23:52:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 293. [2022-07-11 23:52:36,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6883561643835616) internal successors, (493), 292 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:36,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 493 transitions. [2022-07-11 23:52:36,556 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 493 transitions. Word has length 87 [2022-07-11 23:52:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:36,556 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 493 transitions. [2022-07-11 23:52:36,556 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) [2022-07-11 23:52:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 493 transitions. [2022-07-11 23:52:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-11 23:52:36,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:36,557 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:36,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:52:36,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash 389352563, now seen corresponding path program 1 times [2022-07-11 23:52:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:36,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771844111] [2022-07-11 23:52:36,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-11 23:52:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:36,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771844111] [2022-07-11 23:52:36,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771844111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:36,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:36,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118628462] [2022-07-11 23:52:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:36,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:36,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:36,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:36,673 INFO L87 Difference]: Start difference. First operand 293 states and 493 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) [2022-07-11 23:52:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:37,132 INFO L93 Difference]: Finished difference Result 643 states and 1063 transitions. [2022-07-11 23:52:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:37,132 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 88 [2022-07-11 23:52:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:37,134 INFO L225 Difference]: With dead ends: 643 [2022-07-11 23:52:37,134 INFO L226 Difference]: Without dead ends: 371 [2022-07-11 23:52:37,134 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 [2022-07-11 23:52:37,135 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 143 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:37,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 336 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:52:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-07-11 23:52:37,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 293. [2022-07-11 23:52:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6712328767123288) internal successors, (488), 292 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 488 transitions. [2022-07-11 23:52:37,141 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 488 transitions. Word has length 88 [2022-07-11 23:52:37,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:37,141 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 488 transitions. [2022-07-11 23:52:37,141 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) [2022-07-11 23:52:37,141 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 488 transitions. [2022-07-11 23:52:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-11 23:52:37,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:37,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:37,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:52:37,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 262089547, now seen corresponding path program 1 times [2022-07-11 23:52:37,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:37,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155215205] [2022-07-11 23:52:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155215205] [2022-07-11 23:52:37,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155215205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:37,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:37,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208342816] [2022-07-11 23:52:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:37,215 INFO L87 Difference]: Start difference. First operand 293 states and 488 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) [2022-07-11 23:52:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:38,194 INFO L93 Difference]: Finished difference Result 642 states and 1053 transitions. [2022-07-11 23:52:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:38,194 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 93 [2022-07-11 23:52:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:38,195 INFO L225 Difference]: With dead ends: 642 [2022-07-11 23:52:38,195 INFO L226 Difference]: Without dead ends: 370 [2022-07-11 23:52:38,196 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 [2022-07-11 23:52:38,196 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 148 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 338 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-07-11 23:52:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 293. [2022-07-11 23:52:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.654109589041096) internal successors, (483), 292 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 483 transitions. [2022-07-11 23:52:38,202 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 483 transitions. Word has length 93 [2022-07-11 23:52:38,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:38,203 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 483 transitions. [2022-07-11 23:52:38,203 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) [2022-07-11 23:52:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 483 transitions. [2022-07-11 23:52:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-11 23:52:38,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:38,204 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-11 23:52:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:52:38,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1550770911, now seen corresponding path program 1 times [2022-07-11 23:52:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:38,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068843649] [2022-07-11 23:52:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:38,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:38,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068843649] [2022-07-11 23:52:38,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068843649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:38,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:38,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859137213] [2022-07-11 23:52:38,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:38,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:38,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:38,291 INFO L87 Difference]: Start difference. First operand 293 states and 483 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) [2022-07-11 23:52:39,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:39,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:39,486 INFO L93 Difference]: Finished difference Result 579 states and 954 transitions. [2022-07-11 23:52:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:39,486 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 93 [2022-07-11 23:52:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:39,489 INFO L225 Difference]: With dead ends: 579 [2022-07-11 23:52:39,489 INFO L226 Difference]: Without dead ends: 307 [2022-07-11 23:52:39,490 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 [2022-07-11 23:52:39,491 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 25 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:39,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 483 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:39,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-11 23:52:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 293. [2022-07-11 23:52:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6506849315068493) internal successors, (482), 292 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 482 transitions. [2022-07-11 23:52:39,496 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 482 transitions. Word has length 93 [2022-07-11 23:52:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:39,496 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 482 transitions. [2022-07-11 23:52:39,496 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) [2022-07-11 23:52:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 482 transitions. [2022-07-11 23:52:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-11 23:52:39,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:39,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-11 23:52:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:52:39,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:39,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2009016310, now seen corresponding path program 1 times [2022-07-11 23:52:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:39,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855755195] [2022-07-11 23:52:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:39,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:39,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855755195] [2022-07-11 23:52:39,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855755195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:39,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:39,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037915279] [2022-07-11 23:52:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:39,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:39,562 INFO L87 Difference]: Start difference. First operand 293 states and 482 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) [2022-07-11 23:52:40,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:40,897 INFO L93 Difference]: Finished difference Result 641 states and 1042 transitions. [2022-07-11 23:52:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:40,898 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 93 [2022-07-11 23:52:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:40,899 INFO L225 Difference]: With dead ends: 641 [2022-07-11 23:52:40,899 INFO L226 Difference]: Without dead ends: 369 [2022-07-11 23:52:40,900 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 [2022-07-11 23:52:40,900 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 140 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:40,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:52:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-11 23:52:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-11 23:52:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6335616438356164) internal successors, (477), 292 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 477 transitions. [2022-07-11 23:52:40,907 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 477 transitions. Word has length 93 [2022-07-11 23:52:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:40,908 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 477 transitions. [2022-07-11 23:52:40,908 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) [2022-07-11 23:52:40,908 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 477 transitions. [2022-07-11 23:52:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-11 23:52:40,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:40,915 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-11 23:52:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:52:40,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -301391389, now seen corresponding path program 1 times [2022-07-11 23:52:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440567766] [2022-07-11 23:52:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:40,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:41,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:41,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440567766] [2022-07-11 23:52:41,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440567766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:41,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:41,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082171310] [2022-07-11 23:52:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:41,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:41,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:41,020 INFO L87 Difference]: Start difference. First operand 293 states and 477 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:42,940 INFO L93 Difference]: Finished difference Result 578 states and 943 transitions. [2022-07-11 23:52:42,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:42,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-11 23:52:42,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:42,942 INFO L225 Difference]: With dead ends: 578 [2022-07-11 23:52:42,942 INFO L226 Difference]: Without dead ends: 306 [2022-07-11 23:52:42,942 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 [2022-07-11 23:52:42,943 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 22 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:42,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-11 23:52:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-11 23:52:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-11 23:52:42,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.63013698630137) internal successors, (476), 292 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 476 transitions. [2022-07-11 23:52:42,948 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 476 transitions. Word has length 94 [2022-07-11 23:52:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:42,949 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 476 transitions. [2022-07-11 23:52:42,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 476 transitions. [2022-07-11 23:52:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-11 23:52:42,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:42,950 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-11 23:52:42,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:52:42,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -233475740, now seen corresponding path program 1 times [2022-07-11 23:52:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:42,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138422396] [2022-07-11 23:52:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:43,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:43,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138422396] [2022-07-11 23:52:43,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138422396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:43,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:43,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265400809] [2022-07-11 23:52:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:43,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:43,038 INFO L87 Difference]: Start difference. First operand 293 states and 476 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:44,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:44,240 INFO L93 Difference]: Finished difference Result 578 states and 942 transitions. [2022-07-11 23:52:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:44,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-11 23:52:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:44,241 INFO L225 Difference]: With dead ends: 578 [2022-07-11 23:52:44,241 INFO L226 Difference]: Without dead ends: 306 [2022-07-11 23:52:44,242 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 [2022-07-11 23:52:44,242 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 20 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:44,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-11 23:52:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 293. [2022-07-11 23:52:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6267123287671232) internal successors, (475), 292 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 475 transitions. [2022-07-11 23:52:44,247 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 475 transitions. Word has length 95 [2022-07-11 23:52:44,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:44,247 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 475 transitions. [2022-07-11 23:52:44,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 475 transitions. [2022-07-11 23:52:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-11 23:52:44,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:44,248 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-11 23:52:44,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:52:44,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:44,248 INFO L85 PathProgramCache]: Analyzing trace with hash -772685816, now seen corresponding path program 1 times [2022-07-11 23:52:44,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:44,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443855424] [2022-07-11 23:52:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-11 23:52:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:44,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443855424] [2022-07-11 23:52:44,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443855424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:44,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:44,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:44,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466705447] [2022-07-11 23:52:44,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:44,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:44,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:44,334 INFO L87 Difference]: Start difference. First operand 293 states and 475 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:45,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:45,904 INFO L93 Difference]: Finished difference Result 641 states and 1031 transitions. [2022-07-11 23:52:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-11 23:52:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:45,906 INFO L225 Difference]: With dead ends: 641 [2022-07-11 23:52:45,906 INFO L226 Difference]: Without dead ends: 369 [2022-07-11 23:52:45,906 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 [2022-07-11 23:52:45,907 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:45,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:52:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-11 23:52:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 293. [2022-07-11 23:52:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.6095890410958904) internal successors, (470), 292 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 470 transitions. [2022-07-11 23:52:45,912 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 470 transitions. Word has length 96 [2022-07-11 23:52:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:45,912 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 470 transitions. [2022-07-11 23:52:45,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 470 transitions. [2022-07-11 23:52:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-11 23:52:45,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:45,914 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, 1] [2022-07-11 23:52:45,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:52:45,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash 895742832, now seen corresponding path program 1 times [2022-07-11 23:52:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:45,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293249887] [2022-07-11 23:52:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:45,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293249887] [2022-07-11 23:52:45,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293249887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:45,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:45,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:45,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307342976] [2022-07-11 23:52:45,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:45,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:45,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:45,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:45,993 INFO L87 Difference]: Start difference. First operand 293 states and 470 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:47,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:47,276 INFO L93 Difference]: Finished difference Result 681 states and 1090 transitions. [2022-07-11 23:52:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-07-11 23:52:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:47,277 INFO L225 Difference]: With dead ends: 681 [2022-07-11 23:52:47,277 INFO L226 Difference]: Without dead ends: 409 [2022-07-11 23:52:47,278 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 [2022-07-11 23:52:47,278 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 120 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:47,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 340 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:52:47,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-11 23:52:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 330. [2022-07-11 23:52:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.6170212765957446) internal successors, (532), 329 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 532 transitions. [2022-07-11 23:52:47,284 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 532 transitions. Word has length 96 [2022-07-11 23:52:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:47,284 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 532 transitions. [2022-07-11 23:52:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 532 transitions. [2022-07-11 23:52:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-11 23:52:47,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:47,285 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, 1] [2022-07-11 23:52:47,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:52:47,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -428913977, now seen corresponding path program 1 times [2022-07-11 23:52:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:47,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155989069] [2022-07-11 23:52:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:47,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:47,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155989069] [2022-07-11 23:52:47,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155989069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:47,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:47,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242204348] [2022-07-11 23:52:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:47,356 INFO L87 Difference]: Start difference. First operand 330 states and 532 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2022-07-11 23:52:48,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:48,844 INFO L93 Difference]: Finished difference Result 715 states and 1146 transitions. [2022-07-11 23:52:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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 97 [2022-07-11 23:52:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:48,846 INFO L225 Difference]: With dead ends: 715 [2022-07-11 23:52:48,846 INFO L226 Difference]: Without dead ends: 406 [2022-07-11 23:52:48,846 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 [2022-07-11 23:52:48,847 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 119 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:48,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 364 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:52:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-11 23:52:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 330. [2022-07-11 23:52:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.6109422492401215) internal successors, (530), 329 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 530 transitions. [2022-07-11 23:52:48,853 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 530 transitions. Word has length 97 [2022-07-11 23:52:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:48,854 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 530 transitions. [2022-07-11 23:52:48,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 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) [2022-07-11 23:52:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 530 transitions. [2022-07-11 23:52:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-11 23:52:48,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:48,855 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:48,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-11 23:52:48,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -567402669, now seen corresponding path program 1 times [2022-07-11 23:52:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:48,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448278926] [2022-07-11 23:52:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-11 23:52:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448278926] [2022-07-11 23:52:48,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448278926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:48,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:48,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583438370] [2022-07-11 23:52:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:48,947 INFO L87 Difference]: Start difference. First operand 330 states and 530 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) [2022-07-11 23:52:49,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:50,233 INFO L93 Difference]: Finished difference Result 753 states and 1206 transitions. [2022-07-11 23:52:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:50,235 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 104 [2022-07-11 23:52:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:50,236 INFO L225 Difference]: With dead ends: 753 [2022-07-11 23:52:50,236 INFO L226 Difference]: Without dead ends: 444 [2022-07-11 23:52:50,236 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 [2022-07-11 23:52:50,237 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 140 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:50,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:52:50,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-11 23:52:50,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 346. [2022-07-11 23:52:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.5942028985507246) internal successors, (550), 345 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 550 transitions. [2022-07-11 23:52:50,242 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 550 transitions. Word has length 104 [2022-07-11 23:52:50,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:50,242 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 550 transitions. [2022-07-11 23:52:50,243 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) [2022-07-11 23:52:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 550 transitions. [2022-07-11 23:52:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-11 23:52:50,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:50,244 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, 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] [2022-07-11 23:52:50,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-11 23:52:50,244 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1681657825, now seen corresponding path program 1 times [2022-07-11 23:52:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:50,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002020415] [2022-07-11 23:52:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-11 23:52:50,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:50,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002020415] [2022-07-11 23:52:50,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002020415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:50,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:50,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397092577] [2022-07-11 23:52:50,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:50,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:50,309 INFO L87 Difference]: Start difference. First operand 346 states and 550 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:51,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:51,950 INFO L93 Difference]: Finished difference Result 710 states and 1132 transitions. [2022-07-11 23:52:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:51,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 105 [2022-07-11 23:52:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:51,952 INFO L225 Difference]: With dead ends: 710 [2022-07-11 23:52:51,952 INFO L226 Difference]: Without dead ends: 385 [2022-07-11 23:52:51,952 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 [2022-07-11 23:52:51,953 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 29 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:51,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 505 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:52:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-11 23:52:51,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-11 23:52:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5885558583106267) internal successors, (583), 367 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 583 transitions. [2022-07-11 23:52:51,958 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 583 transitions. Word has length 105 [2022-07-11 23:52:51,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:51,958 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 583 transitions. [2022-07-11 23:52:51,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:51,959 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 583 transitions. [2022-07-11 23:52:51,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-11 23:52:51,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:51,960 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:51,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-11 23:52:51,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1117720858, now seen corresponding path program 1 times [2022-07-11 23:52:51,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898031796] [2022-07-11 23:52:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-11 23:52:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:52,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898031796] [2022-07-11 23:52:52,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898031796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:52,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:52,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:52,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912086428] [2022-07-11 23:52:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:52,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:52,046 INFO L87 Difference]: Start difference. First operand 368 states and 583 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:52,650 INFO L93 Difference]: Finished difference Result 732 states and 1164 transitions. [2022-07-11 23:52:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-11 23:52:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:52,652 INFO L225 Difference]: With dead ends: 732 [2022-07-11 23:52:52,652 INFO L226 Difference]: Without dead ends: 385 [2022-07-11 23:52:52,652 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 [2022-07-11 23:52:52,653 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 38 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:52,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:52:52,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-11 23:52:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-11 23:52:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5858310626702998) internal successors, (582), 367 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 582 transitions. [2022-07-11 23:52:52,658 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 582 transitions. Word has length 118 [2022-07-11 23:52:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:52,658 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 582 transitions. [2022-07-11 23:52:52,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 582 transitions. [2022-07-11 23:52:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-11 23:52:52,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:52,659 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:52,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-11 23:52:52,659 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1862291490, now seen corresponding path program 1 times [2022-07-11 23:52:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:52,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909218934] [2022-07-11 23:52:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:52,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-11 23:52:52,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:52,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909218934] [2022-07-11 23:52:52,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909218934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:52,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:52,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866055203] [2022-07-11 23:52:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:52,733 INFO L87 Difference]: Start difference. First operand 368 states and 582 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:54,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:54,439 INFO L93 Difference]: Finished difference Result 732 states and 1162 transitions. [2022-07-11 23:52:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:54,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-11 23:52:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:54,440 INFO L225 Difference]: With dead ends: 732 [2022-07-11 23:52:54,441 INFO L226 Difference]: Without dead ends: 385 [2022-07-11 23:52:54,441 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 [2022-07-11 23:52:54,441 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 36 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:54,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 505 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:52:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-11 23:52:54,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 368. [2022-07-11 23:52:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.5831062670299727) internal successors, (581), 367 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:54,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 581 transitions. [2022-07-11 23:52:54,446 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 581 transitions. Word has length 119 [2022-07-11 23:52:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:54,446 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 581 transitions. [2022-07-11 23:52:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:54,446 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 581 transitions. [2022-07-11 23:52:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-11 23:52:54,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:54,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-07-11 23:52:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-11 23:52:54,447 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2121527147, now seen corresponding path program 1 times [2022-07-11 23:52:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303933904] [2022-07-11 23:52:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-11 23:52:54,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:54,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303933904] [2022-07-11 23:52:54,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303933904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:54,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:54,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:54,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577967751] [2022-07-11 23:52:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:54,537 INFO L87 Difference]: Start difference. First operand 368 states and 581 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:55,478 INFO L93 Difference]: Finished difference Result 791 states and 1244 transitions. [2022-07-11 23:52:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:55,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 120 [2022-07-11 23:52:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:55,479 INFO L225 Difference]: With dead ends: 791 [2022-07-11 23:52:55,479 INFO L226 Difference]: Without dead ends: 444 [2022-07-11 23:52:55,480 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 [2022-07-11 23:52:55,480 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:55,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 340 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:52:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-11 23:52:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2022-07-11 23:52:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.564032697547684) internal successors, (574), 367 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 574 transitions. [2022-07-11 23:52:55,487 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 574 transitions. Word has length 120 [2022-07-11 23:52:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:55,487 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 574 transitions. [2022-07-11 23:52:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 574 transitions. [2022-07-11 23:52:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-11 23:52:55,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:55,488 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, 1] [2022-07-11 23:52:55,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-11 23:52:55,489 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:55,489 INFO L85 PathProgramCache]: Analyzing trace with hash -255070744, now seen corresponding path program 1 times [2022-07-11 23:52:55,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:55,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505739775] [2022-07-11 23:52:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:55,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:55,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505739775] [2022-07-11 23:52:55,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505739775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:55,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:55,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864724814] [2022-07-11 23:52:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:55,591 INFO L87 Difference]: Start difference. First operand 368 states and 574 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) [2022-07-11 23:52:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:56,127 INFO L93 Difference]: Finished difference Result 831 states and 1294 transitions. [2022-07-11 23:52:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:56,128 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 127 [2022-07-11 23:52:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:56,129 INFO L225 Difference]: With dead ends: 831 [2022-07-11 23:52:56,129 INFO L226 Difference]: Without dead ends: 484 [2022-07-11 23:52:56,129 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 [2022-07-11 23:52:56,130 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 111 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:56,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 341 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-11 23:52:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 411. [2022-07-11 23:52:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.5682926829268293) internal successors, (643), 410 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 643 transitions. [2022-07-11 23:52:56,138 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 643 transitions. Word has length 127 [2022-07-11 23:52:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:56,138 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 643 transitions. [2022-07-11 23:52:56,139 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) [2022-07-11 23:52:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 643 transitions. [2022-07-11 23:52:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-11 23:52:56,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:56,140 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, 1, 1] [2022-07-11 23:52:56,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-11 23:52:56,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1983227683, now seen corresponding path program 1 times [2022-07-11 23:52:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:56,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413544035] [2022-07-11 23:52:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413544035] [2022-07-11 23:52:56,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413544035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:56,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:56,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502789054] [2022-07-11 23:52:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:56,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:56,227 INFO L87 Difference]: Start difference. First operand 411 states and 643 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:57,351 INFO L93 Difference]: Finished difference Result 877 states and 1368 transitions. [2022-07-11 23:52:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 128 [2022-07-11 23:52:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:57,353 INFO L225 Difference]: With dead ends: 877 [2022-07-11 23:52:57,353 INFO L226 Difference]: Without dead ends: 485 [2022-07-11 23:52:57,353 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 [2022-07-11 23:52:57,354 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 112 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:57,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 364 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:52:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-07-11 23:52:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 413. [2022-07-11 23:52:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.5679611650485437) internal successors, (646), 412 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 646 transitions. [2022-07-11 23:52:57,360 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 646 transitions. Word has length 128 [2022-07-11 23:52:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 646 transitions. [2022-07-11 23:52:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 646 transitions. [2022-07-11 23:52:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:52:57,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:57,361 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2022-07-11 23:52:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-11 23:52:57,361 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -753249217, now seen corresponding path program 1 times [2022-07-11 23:52:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:57,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878846543] [2022-07-11 23:52:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:57,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-11 23:52:57,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:57,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878846543] [2022-07-11 23:52:57,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878846543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:57,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:57,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:52:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743471313] [2022-07-11 23:52:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:57,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:52:57,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:52:57,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:52:57,440 INFO L87 Difference]: Start difference. First operand 413 states and 646 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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) [2022-07-11 23:52:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:58,677 INFO L93 Difference]: Finished difference Result 815 states and 1280 transitions. [2022-07-11 23:52:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:52:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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 140 [2022-07-11 23:52:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:58,679 INFO L225 Difference]: With dead ends: 815 [2022-07-11 23:52:58,679 INFO L226 Difference]: Without dead ends: 423 [2022-07-11 23:52:58,679 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 [2022-07-11 23:52:58,679 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 150 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:58,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 364 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:58,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-11 23:52:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 422. [2022-07-11 23:52:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.5605700712589075) internal successors, (657), 421 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 657 transitions. [2022-07-11 23:52:58,685 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 657 transitions. Word has length 140 [2022-07-11 23:52:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:58,686 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 657 transitions. [2022-07-11 23:52:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 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) [2022-07-11 23:52:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 657 transitions. [2022-07-11 23:52:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:52:58,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:58,687 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, 1] [2022-07-11 23:52:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-11 23:52:58,687 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:58,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash -734463505, now seen corresponding path program 1 times [2022-07-11 23:52:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950172909] [2022-07-11 23:52:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:58,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:52:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:58,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950172909] [2022-07-11 23:52:58,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950172909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:58,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:58,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:58,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012156385] [2022-07-11 23:52:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:58,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:58,787 INFO L87 Difference]: Start difference. First operand 422 states and 657 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) [2022-07-11 23:52:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:59,840 INFO L93 Difference]: Finished difference Result 907 states and 1411 transitions. [2022-07-11 23:52:59,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:59,840 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 [2022-07-11 23:52:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:59,842 INFO L225 Difference]: With dead ends: 907 [2022-07-11 23:52:59,842 INFO L226 Difference]: Without dead ends: 506 [2022-07-11 23:52:59,842 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 [2022-07-11 23:52:59,843 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:59,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 483 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-07-11 23:52:59,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 454. [2022-07-11 23:52:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.5607064017660044) internal successors, (707), 453 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 707 transitions. [2022-07-11 23:52:59,850 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 707 transitions. Word has length 140 [2022-07-11 23:52:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:59,850 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 707 transitions. [2022-07-11 23:52:59,850 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) [2022-07-11 23:52:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 707 transitions. [2022-07-11 23:52:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:52:59,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:59,851 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, 1] [2022-07-11 23:52:59,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-11 23:52:59,852 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash 866607601, now seen corresponding path program 1 times [2022-07-11 23:52:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641013033] [2022-07-11 23:52:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-11 23:52:59,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:59,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641013033] [2022-07-11 23:52:59,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641013033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:59,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:59,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158762473] [2022-07-11 23:52:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:59,943 INFO L87 Difference]: Start difference. First operand 454 states and 707 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:01,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:01,349 INFO L93 Difference]: Finished difference Result 932 states and 1453 transitions. [2022-07-11 23:53:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 [2022-07-11 23:53:01,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:01,351 INFO L225 Difference]: With dead ends: 932 [2022-07-11 23:53:01,351 INFO L226 Difference]: Without dead ends: 499 [2022-07-11 23:53:01,351 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 [2022-07-11 23:53:01,352 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 34 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:01,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 593 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-11 23:53:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-11 23:53:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 478. [2022-07-11 23:53:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.5576519916142557) internal successors, (743), 477 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 743 transitions. [2022-07-11 23:53:01,358 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 743 transitions. Word has length 140 [2022-07-11 23:53:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:01,359 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 743 transitions. [2022-07-11 23:53:01,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 743 transitions. [2022-07-11 23:53:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-11 23:53:01,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:01,360 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, 1] [2022-07-11 23:53:01,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-11 23:53:01,360 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:01,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1120474823, now seen corresponding path program 1 times [2022-07-11 23:53:01,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:01,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741234825] [2022-07-11 23:53:01,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741234825] [2022-07-11 23:53:01,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741234825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:01,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:01,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799366093] [2022-07-11 23:53:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:01,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:01,432 INFO L87 Difference]: Start difference. First operand 478 states and 743 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:02,999 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:03,214 INFO L93 Difference]: Finished difference Result 985 states and 1530 transitions. [2022-07-11 23:53:03,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:03,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 141 [2022-07-11 23:53:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:03,216 INFO L225 Difference]: With dead ends: 985 [2022-07-11 23:53:03,216 INFO L226 Difference]: Without dead ends: 528 [2022-07-11 23:53:03,216 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 [2022-07-11 23:53:03,217 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:03,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:53:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-11 23:53:03,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-11 23:53:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5564853556485356) internal successors, (744), 478 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 744 transitions. [2022-07-11 23:53:03,224 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 744 transitions. Word has length 141 [2022-07-11 23:53:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:03,224 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 744 transitions. [2022-07-11 23:53:03,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 744 transitions. [2022-07-11 23:53:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:53:03,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:03,225 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, 1] [2022-07-11 23:53:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-11 23:53:03,225 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1773983904, now seen corresponding path program 1 times [2022-07-11 23:53:03,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:03,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830395832] [2022-07-11 23:53:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:03,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:03,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830395832] [2022-07-11 23:53:03,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830395832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:03,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:03,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:03,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414606341] [2022-07-11 23:53:03,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:03,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:03,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:03,327 INFO L87 Difference]: Start difference. First operand 479 states and 744 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) [2022-07-11 23:53:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:03,849 INFO L93 Difference]: Finished difference Result 986 states and 1530 transitions. [2022-07-11 23:53:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:03,850 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 [2022-07-11 23:53:03,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:03,851 INFO L225 Difference]: With dead ends: 986 [2022-07-11 23:53:03,851 INFO L226 Difference]: Without dead ends: 528 [2022-07-11 23:53:03,852 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 [2022-07-11 23:53:03,852 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 72 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 481 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:03,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-11 23:53:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 479. [2022-07-11 23:53:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5543933054393306) internal successors, (743), 478 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 743 transitions. [2022-07-11 23:53:03,859 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 743 transitions. Word has length 143 [2022-07-11 23:53:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:03,863 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 743 transitions. [2022-07-11 23:53:03,864 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) [2022-07-11 23:53:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 743 transitions. [2022-07-11 23:53:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-11 23:53:03,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:03,865 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, 1] [2022-07-11 23:53:03,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-11 23:53:03,865 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1773090698, now seen corresponding path program 1 times [2022-07-11 23:53:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:03,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041147283] [2022-07-11 23:53:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:03,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:03,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041147283] [2022-07-11 23:53:03,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041147283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:03,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:03,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:03,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055470501] [2022-07-11 23:53:03,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:03,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:03,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:03,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:03,958 INFO L87 Difference]: Start difference. First operand 479 states and 743 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) [2022-07-11 23:53:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:04,293 INFO L93 Difference]: Finished difference Result 978 states and 1515 transitions. [2022-07-11 23:53:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:04,293 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 144 [2022-07-11 23:53:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:04,295 INFO L225 Difference]: With dead ends: 978 [2022-07-11 23:53:04,295 INFO L226 Difference]: Without dead ends: 520 [2022-07-11 23:53:04,295 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 [2022-07-11 23:53:04,296 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:04,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 499 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:53:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-07-11 23:53:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 479. [2022-07-11 23:53:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.5523012552301256) internal successors, (742), 478 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 742 transitions. [2022-07-11 23:53:04,302 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 742 transitions. Word has length 144 [2022-07-11 23:53:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:04,303 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 742 transitions. [2022-07-11 23:53:04,303 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) [2022-07-11 23:53:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 742 transitions. [2022-07-11 23:53:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-11 23:53:04,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:04,304 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, 1] [2022-07-11 23:53:04,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-11 23:53:04,304 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash 502920678, now seen corresponding path program 1 times [2022-07-11 23:53:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:04,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844248726] [2022-07-11 23:53:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:53:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:04,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844248726] [2022-07-11 23:53:04,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844248726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:04,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:04,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861880457] [2022-07-11 23:53:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:04,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:04,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:04,384 INFO L87 Difference]: Start difference. First operand 479 states and 742 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) [2022-07-11 23:53:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:05,295 INFO L93 Difference]: Finished difference Result 1051 states and 1625 transitions. [2022-07-11 23:53:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:05,295 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 [2022-07-11 23:53:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:05,297 INFO L225 Difference]: With dead ends: 1051 [2022-07-11 23:53:05,297 INFO L226 Difference]: Without dead ends: 593 [2022-07-11 23:53:05,297 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 [2022-07-11 23:53:05,298 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 118 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:05,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 350 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:53:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-11 23:53:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 514. [2022-07-11 23:53:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.5516569200779726) internal successors, (796), 513 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 796 transitions. [2022-07-11 23:53:05,305 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 796 transitions. Word has length 150 [2022-07-11 23:53:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:05,306 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 796 transitions. [2022-07-11 23:53:05,306 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) [2022-07-11 23:53:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 796 transitions. [2022-07-11 23:53:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-11 23:53:05,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:05,307 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, 1] [2022-07-11 23:53:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-11 23:53:05,307 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:05,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2134561589, now seen corresponding path program 1 times [2022-07-11 23:53:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:05,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575070477] [2022-07-11 23:53:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:53:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:05,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575070477] [2022-07-11 23:53:05,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575070477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:05,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:05,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185928991] [2022-07-11 23:53:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:05,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:05,383 INFO L87 Difference]: Start difference. First operand 514 states and 796 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:05,764 INFO L93 Difference]: Finished difference Result 1046 states and 1618 transitions. [2022-07-11 23:53:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 [2022-07-11 23:53:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:05,765 INFO L225 Difference]: With dead ends: 1046 [2022-07-11 23:53:05,765 INFO L226 Difference]: Without dead ends: 553 [2022-07-11 23:53:05,766 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 [2022-07-11 23:53:05,766 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 51 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:05,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 501 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:53:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-11 23:53:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-11 23:53:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.55019305019305) internal successors, (803), 518 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 803 transitions. [2022-07-11 23:53:05,773 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 803 transitions. Word has length 151 [2022-07-11 23:53:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:05,773 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 803 transitions. [2022-07-11 23:53:05,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 803 transitions. [2022-07-11 23:53:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-11 23:53:05,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:05,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-11 23:53:05,774 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash 549512543, now seen corresponding path program 1 times [2022-07-11 23:53:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:05,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365001228] [2022-07-11 23:53:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:05,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365001228] [2022-07-11 23:53:05,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365001228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:05,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:05,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034122313] [2022-07-11 23:53:05,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:05,853 INFO L87 Difference]: Start difference. First operand 519 states and 803 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) [2022-07-11 23:53:07,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:07,578 INFO L93 Difference]: Finished difference Result 1051 states and 1624 transitions. [2022-07-11 23:53:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:07,579 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 155 [2022-07-11 23:53:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:07,580 INFO L225 Difference]: With dead ends: 1051 [2022-07-11 23:53:07,580 INFO L226 Difference]: Without dead ends: 553 [2022-07-11 23:53:07,580 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 [2022-07-11 23:53:07,581 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 74 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:07,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 523 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-11 23:53:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 519. [2022-07-11 23:53:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5482625482625483) internal successors, (802), 518 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 802 transitions. [2022-07-11 23:53:07,588 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 802 transitions. Word has length 155 [2022-07-11 23:53:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:07,588 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 802 transitions. [2022-07-11 23:53:07,588 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) [2022-07-11 23:53:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 802 transitions. [2022-07-11 23:53:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-11 23:53:07,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:07,590 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-11 23:53:07,590 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1020868893, now seen corresponding path program 1 times [2022-07-11 23:53:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918220617] [2022-07-11 23:53:07,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:07,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918220617] [2022-07-11 23:53:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918220617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:07,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:07,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923957009] [2022-07-11 23:53:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:07,661 INFO L87 Difference]: Start difference. First operand 519 states and 802 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) [2022-07-11 23:53:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:08,024 INFO L93 Difference]: Finished difference Result 1038 states and 1606 transitions. [2022-07-11 23:53:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:08,024 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 155 [2022-07-11 23:53:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:08,026 INFO L225 Difference]: With dead ends: 1038 [2022-07-11 23:53:08,026 INFO L226 Difference]: Without dead ends: 540 [2022-07-11 23:53:08,026 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 [2022-07-11 23:53:08,026 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 45 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:08,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 593 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:53:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-11 23:53:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 519. [2022-07-11 23:53:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5463320463320462) internal successors, (801), 518 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 801 transitions. [2022-07-11 23:53:08,033 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 801 transitions. Word has length 155 [2022-07-11 23:53:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:08,033 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 801 transitions. [2022-07-11 23:53:08,033 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) [2022-07-11 23:53:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 801 transitions. [2022-07-11 23:53:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-11 23:53:08,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:08,034 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-11 23:53:08,034 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 981129845, now seen corresponding path program 1 times [2022-07-11 23:53:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431493180] [2022-07-11 23:53:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:08,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431493180] [2022-07-11 23:53:08,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431493180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:08,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:08,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513378597] [2022-07-11 23:53:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:08,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:08,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:08,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:08,106 INFO L87 Difference]: Start difference. First operand 519 states and 801 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:09,176 INFO L93 Difference]: Finished difference Result 1089 states and 1676 transitions. [2022-07-11 23:53:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 [2022-07-11 23:53:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:09,178 INFO L225 Difference]: With dead ends: 1089 [2022-07-11 23:53:09,178 INFO L226 Difference]: Without dead ends: 591 [2022-07-11 23:53:09,179 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 [2022-07-11 23:53:09,179 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 140 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:09,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 374 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:53:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-07-11 23:53:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2022-07-11 23:53:09,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.527027027027027) internal successors, (791), 518 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 791 transitions. [2022-07-11 23:53:09,187 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 791 transitions. Word has length 156 [2022-07-11 23:53:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:09,187 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 791 transitions. [2022-07-11 23:53:09,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 791 transitions. [2022-07-11 23:53:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-11 23:53:09,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:09,188 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, 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] [2022-07-11 23:53:09,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-11 23:53:09,189 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash 158699004, now seen corresponding path program 1 times [2022-07-11 23:53:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:09,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163136078] [2022-07-11 23:53:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:09,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163136078] [2022-07-11 23:53:09,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163136078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:09,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:09,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:09,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722239260] [2022-07-11 23:53:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:09,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:09,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:09,294 INFO L87 Difference]: Start difference. First operand 519 states and 791 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:11,251 INFO L93 Difference]: Finished difference Result 1041 states and 1588 transitions. [2022-07-11 23:53:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:11,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 [2022-07-11 23:53:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:11,253 INFO L225 Difference]: With dead ends: 1041 [2022-07-11 23:53:11,253 INFO L226 Difference]: Without dead ends: 543 [2022-07-11 23:53:11,253 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 [2022-07-11 23:53:11,254 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:11,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-11 23:53:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-07-11 23:53:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 519. [2022-07-11 23:53:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.5250965250965252) internal successors, (790), 518 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 790 transitions. [2022-07-11 23:53:11,261 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 790 transitions. Word has length 162 [2022-07-11 23:53:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:11,261 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 790 transitions. [2022-07-11 23:53:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 790 transitions. [2022-07-11 23:53:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-11 23:53:11,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:11,262 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, 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] [2022-07-11 23:53:11,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-11 23:53:11,262 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:11,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1123473282, now seen corresponding path program 1 times [2022-07-11 23:53:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:11,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785445567] [2022-07-11 23:53:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:11,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-11 23:53:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785445567] [2022-07-11 23:53:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785445567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:11,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:11,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238053664] [2022-07-11 23:53:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:11,346 INFO L87 Difference]: Start difference. First operand 519 states and 790 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) [2022-07-11 23:53:13,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:13,190 INFO L93 Difference]: Finished difference Result 1066 states and 1625 transitions. [2022-07-11 23:53:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:13,190 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 162 [2022-07-11 23:53:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:13,191 INFO L225 Difference]: With dead ends: 1066 [2022-07-11 23:53:13,191 INFO L226 Difference]: Without dead ends: 568 [2022-07-11 23:53:13,192 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 [2022-07-11 23:53:13,192 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 36 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:13,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 569 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:53:13,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-07-11 23:53:13,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 545. [2022-07-11 23:53:13,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.5238970588235294) internal successors, (829), 544 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 829 transitions. [2022-07-11 23:53:13,199 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 829 transitions. Word has length 162 [2022-07-11 23:53:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:13,200 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 829 transitions. [2022-07-11 23:53:13,200 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) [2022-07-11 23:53:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 829 transitions. [2022-07-11 23:53:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-11 23:53:13,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:13,201 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:13,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-11 23:53:13,201 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:13,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1296259281, now seen corresponding path program 1 times [2022-07-11 23:53:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:13,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311343800] [2022-07-11 23:53:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311343800] [2022-07-11 23:53:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311343800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:13,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:13,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:13,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930555801] [2022-07-11 23:53:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:13,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:13,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:13,293 INFO L87 Difference]: Start difference. First operand 545 states and 829 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) [2022-07-11 23:53:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:13,926 INFO L93 Difference]: Finished difference Result 1093 states and 1664 transitions. [2022-07-11 23:53:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:13,927 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 168 [2022-07-11 23:53:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:13,928 INFO L225 Difference]: With dead ends: 1093 [2022-07-11 23:53:13,928 INFO L226 Difference]: Without dead ends: 569 [2022-07-11 23:53:13,929 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 [2022-07-11 23:53:13,929 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 50 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:13,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 523 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-07-11 23:53:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 545. [2022-07-11 23:53:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 1.5220588235294117) internal successors, (828), 544 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 828 transitions. [2022-07-11 23:53:13,937 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 828 transitions. Word has length 168 [2022-07-11 23:53:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:13,937 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 828 transitions. [2022-07-11 23:53:13,937 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) [2022-07-11 23:53:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 828 transitions. [2022-07-11 23:53:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-11 23:53:13,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:13,938 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] [2022-07-11 23:53:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-11 23:53:13,938 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:13,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1600024391, now seen corresponding path program 1 times [2022-07-11 23:53:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:13,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057713753] [2022-07-11 23:53:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-11 23:53:14,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057713753] [2022-07-11 23:53:14,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057713753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489323393] [2022-07-11 23:53:14,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:14,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:14,014 INFO L87 Difference]: Start difference. First operand 545 states and 828 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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) [2022-07-11 23:53:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:14,056 INFO L93 Difference]: Finished difference Result 1585 states and 2424 transitions. [2022-07-11 23:53:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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 168 [2022-07-11 23:53:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:14,058 INFO L225 Difference]: With dead ends: 1585 [2022-07-11 23:53:14,059 INFO L226 Difference]: Without dead ends: 1061 [2022-07-11 23:53:14,059 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 [2022-07-11 23:53:14,059 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 565 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-07-11 23:53:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 1061. [2022-07-11 23:53:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5207547169811322) internal successors, (1612), 1060 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1612 transitions. [2022-07-11 23:53:14,073 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1612 transitions. Word has length 168 [2022-07-11 23:53:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:14,073 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1612 transitions. [2022-07-11 23:53:14,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 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) [2022-07-11 23:53:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1612 transitions. [2022-07-11 23:53:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-11 23:53:14,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:14,075 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-11 23:53:14,075 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:14,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1262826533, now seen corresponding path program 1 times [2022-07-11 23:53:14,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783553274] [2022-07-11 23:53:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-11 23:53:14,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783553274] [2022-07-11 23:53:14,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783553274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894095276] [2022-07-11 23:53:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:14,152 INFO L87 Difference]: Start difference. First operand 1061 states and 1612 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) [2022-07-11 23:53:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:14,573 INFO L93 Difference]: Finished difference Result 2239 states and 3383 transitions. [2022-07-11 23:53:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:14,573 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 169 [2022-07-11 23:53:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:14,576 INFO L225 Difference]: With dead ends: 2239 [2022-07-11 23:53:14,576 INFO L226 Difference]: Without dead ends: 1199 [2022-07-11 23:53:14,577 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 [2022-07-11 23:53:14,577 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 125 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:14,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 350 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:53:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2022-07-11 23:53:14,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1061. [2022-07-11 23:53:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5056603773584907) internal successors, (1596), 1060 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1596 transitions. [2022-07-11 23:53:14,593 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1596 transitions. Word has length 169 [2022-07-11 23:53:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:14,593 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1596 transitions. [2022-07-11 23:53:14,593 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) [2022-07-11 23:53:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1596 transitions. [2022-07-11 23:53:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-11 23:53:14,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:14,595 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, 1] [2022-07-11 23:53:14,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-11 23:53:14,595 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1667209802, now seen corresponding path program 1 times [2022-07-11 23:53:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58017146] [2022-07-11 23:53:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:53:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58017146] [2022-07-11 23:53:14,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58017146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738012186] [2022-07-11 23:53:14,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:14,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:14,691 INFO L87 Difference]: Start difference. First operand 1061 states and 1596 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:14,727 INFO L93 Difference]: Finished difference Result 2585 states and 3901 transitions. [2022-07-11 23:53:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 169 [2022-07-11 23:53:14,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:14,731 INFO L225 Difference]: With dead ends: 2585 [2022-07-11 23:53:14,731 INFO L226 Difference]: Without dead ends: 1545 [2022-07-11 23:53:14,732 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 [2022-07-11 23:53:14,733 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 138 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:14,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 566 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2022-07-11 23:53:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2022-07-11 23:53:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 1.503238341968912) internal successors, (2321), 1544 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2321 transitions. [2022-07-11 23:53:14,754 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2321 transitions. Word has length 169 [2022-07-11 23:53:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:14,754 INFO L495 AbstractCegarLoop]: Abstraction has 1545 states and 2321 transitions. [2022-07-11 23:53:14,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2321 transitions. [2022-07-11 23:53:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-11 23:53:14,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:14,756 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, 1, 1] [2022-07-11 23:53:14,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-11 23:53:14,756 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash 520999631, now seen corresponding path program 1 times [2022-07-11 23:53:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:14,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796564415] [2022-07-11 23:53:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:14,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796564415] [2022-07-11 23:53:14,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796564415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:14,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695416881] [2022-07-11 23:53:14,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:14,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:14,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:14,847 INFO L87 Difference]: Start difference. First operand 1545 states and 2321 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:14,889 INFO L93 Difference]: Finished difference Result 3544 states and 5339 transitions. [2022-07-11 23:53:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-07-11 23:53:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:14,894 INFO L225 Difference]: With dead ends: 3544 [2022-07-11 23:53:14,894 INFO L226 Difference]: Without dead ends: 2020 [2022-07-11 23:53:14,895 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 [2022-07-11 23:53:14,896 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:14,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 446 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-07-11 23:53:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2022-07-11 23:53:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 2019 states have (on average 1.5027241208519069) internal successors, (3034), 2019 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3034 transitions. [2022-07-11 23:53:14,922 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3034 transitions. Word has length 170 [2022-07-11 23:53:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:14,922 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3034 transitions. [2022-07-11 23:53:14,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3034 transitions. [2022-07-11 23:53:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-11 23:53:14,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:14,925 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, 1, 1] [2022-07-11 23:53:14,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-11 23:53:14,926 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash -427052335, now seen corresponding path program 1 times [2022-07-11 23:53:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:14,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693776470] [2022-07-11 23:53:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-11 23:53:14,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693776470] [2022-07-11 23:53:14,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693776470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:14,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863163525] [2022-07-11 23:53:14,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:14,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:14,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:14,994 INFO L87 Difference]: Start difference. First operand 2020 states and 3034 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:15,039 INFO L93 Difference]: Finished difference Result 4046 states and 6080 transitions. [2022-07-11 23:53:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 170 [2022-07-11 23:53:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:15,044 INFO L225 Difference]: With dead ends: 4046 [2022-07-11 23:53:15,044 INFO L226 Difference]: Without dead ends: 2047 [2022-07-11 23:53:15,046 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 [2022-07-11 23:53:15,051 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 412 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-11 23:53:15,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2047. [2022-07-11 23:53:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 1.5) internal successors, (3069), 2046 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 3069 transitions. [2022-07-11 23:53:15,089 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 3069 transitions. Word has length 170 [2022-07-11 23:53:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:15,089 INFO L495 AbstractCegarLoop]: Abstraction has 2047 states and 3069 transitions. [2022-07-11 23:53:15,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 3069 transitions. [2022-07-11 23:53:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-11 23:53:15,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:15,092 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, 1, 1] [2022-07-11 23:53:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-11 23:53:15,092 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash -41189933, now seen corresponding path program 1 times [2022-07-11 23:53:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:15,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044859244] [2022-07-11 23:53:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-11 23:53:15,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044859244] [2022-07-11 23:53:15,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044859244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:15,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:15,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062844536] [2022-07-11 23:53:15,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:15,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:15,155 INFO L87 Difference]: Start difference. First operand 2047 states and 3069 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:15,187 INFO L93 Difference]: Finished difference Result 4075 states and 6116 transitions. [2022-07-11 23:53:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:15,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 170 [2022-07-11 23:53:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:15,193 INFO L225 Difference]: With dead ends: 4075 [2022-07-11 23:53:15,193 INFO L226 Difference]: Without dead ends: 2049 [2022-07-11 23:53:15,194 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 [2022-07-11 23:53:15,195 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:15,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 391 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2022-07-11 23:53:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 2049. [2022-07-11 23:53:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2048 states have (on average 1.49951171875) internal successors, (3071), 2048 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3071 transitions. [2022-07-11 23:53:15,222 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3071 transitions. Word has length 170 [2022-07-11 23:53:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 2049 states and 3071 transitions. [2022-07-11 23:53:15,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3071 transitions. [2022-07-11 23:53:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-11 23:53:15,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:15,225 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-11 23:53:15,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-11 23:53:15,226 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:15,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash -294401179, now seen corresponding path program 1 times [2022-07-11 23:53:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:15,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808920494] [2022-07-11 23:53:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-11 23:53:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:15,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808920494] [2022-07-11 23:53:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808920494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:15,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:15,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243297360] [2022-07-11 23:53:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:15,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:15,342 INFO L87 Difference]: Start difference. First operand 2049 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:16,892 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 [] [2022-07-11 23:53:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:17,149 INFO L93 Difference]: Finished difference Result 4404 states and 6578 transitions. [2022-07-11 23:53:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:17,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 263 [2022-07-11 23:53:17,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:17,153 INFO L225 Difference]: With dead ends: 4404 [2022-07-11 23:53:17,153 INFO L226 Difference]: Without dead ends: 2378 [2022-07-11 23:53:17,155 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 [2022-07-11 23:53:17,155 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 70 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:17,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 629 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:53:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-07-11 23:53:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 2169. [2022-07-11 23:53:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 1.5013837638376384) internal successors, (3255), 2168 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3255 transitions. [2022-07-11 23:53:17,197 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3255 transitions. Word has length 263 [2022-07-11 23:53:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:17,197 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3255 transitions. [2022-07-11 23:53:17,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3255 transitions. [2022-07-11 23:53:17,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-11 23:53:17,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:17,200 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-11 23:53:17,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-11 23:53:17,201 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:17,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:17,201 INFO L85 PathProgramCache]: Analyzing trace with hash -363444605, now seen corresponding path program 1 times [2022-07-11 23:53:17,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:17,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101017971] [2022-07-11 23:53:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:17,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-11 23:53:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:17,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101017971] [2022-07-11 23:53:17,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101017971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:17,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:17,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:17,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256879020] [2022-07-11 23:53:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:17,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:17,299 INFO L87 Difference]: Start difference. First operand 2169 states and 3255 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,435 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 [] [2022-07-11 23:53:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:18,683 INFO L93 Difference]: Finished difference Result 4516 states and 6750 transitions. [2022-07-11 23:53:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:18,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 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 264 [2022-07-11 23:53:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:18,689 INFO L225 Difference]: With dead ends: 4516 [2022-07-11 23:53:18,689 INFO L226 Difference]: Without dead ends: 2370 [2022-07-11 23:53:18,690 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 [2022-07-11 23:53:18,690 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 67 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:18,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 625 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-11 23:53:18,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-11 23:53:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.5004604051565378) internal successors, (3259), 2172 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3259 transitions. [2022-07-11 23:53:18,725 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3259 transitions. Word has length 264 [2022-07-11 23:53:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:18,726 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3259 transitions. [2022-07-11 23:53:18,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3259 transitions. [2022-07-11 23:53:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-11 23:53:18,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:18,729 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-11 23:53:18,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-11 23:53:18,730 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:18,730 INFO L85 PathProgramCache]: Analyzing trace with hash -117417430, now seen corresponding path program 1 times [2022-07-11 23:53:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:18,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722857422] [2022-07-11 23:53:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-11 23:53:18,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:18,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722857422] [2022-07-11 23:53:18,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722857422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:18,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:18,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:18,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266060822] [2022-07-11 23:53:18,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:18,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:18,837 INFO L87 Difference]: Start difference. First operand 2173 states and 3259 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:20,047 INFO L93 Difference]: Finished difference Result 4520 states and 6750 transitions. [2022-07-11 23:53:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 266 [2022-07-11 23:53:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:20,050 INFO L225 Difference]: With dead ends: 4520 [2022-07-11 23:53:20,050 INFO L226 Difference]: Without dead ends: 2370 [2022-07-11 23:53:20,051 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 [2022-07-11 23:53:20,052 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 69 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:20,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 623 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:53:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-11 23:53:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2173. [2022-07-11 23:53:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.4986187845303867) internal successors, (3255), 2172 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3255 transitions. [2022-07-11 23:53:20,079 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3255 transitions. Word has length 266 [2022-07-11 23:53:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:20,080 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3255 transitions. [2022-07-11 23:53:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3255 transitions. [2022-07-11 23:53:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-07-11 23:53:20,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:20,083 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-11 23:53:20,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-11 23:53:20,083 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:20,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1959137556, now seen corresponding path program 1 times [2022-07-11 23:53:20,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:20,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209729121] [2022-07-11 23:53:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:20,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-11 23:53:20,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:20,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209729121] [2022-07-11 23:53:20,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209729121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:20,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:20,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:20,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186031994] [2022-07-11 23:53:20,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:20,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:20,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:20,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:20,217 INFO L87 Difference]: Start difference. First operand 2173 states and 3255 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:21,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:21,790 INFO L93 Difference]: Finished difference Result 4488 states and 6690 transitions. [2022-07-11 23:53:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 267 [2022-07-11 23:53:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:21,793 INFO L225 Difference]: With dead ends: 4488 [2022-07-11 23:53:21,794 INFO L226 Difference]: Without dead ends: 2338 [2022-07-11 23:53:21,795 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 [2022-07-11 23:53:21,795 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 58 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:21,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 613 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:53:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-07-11 23:53:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2173. [2022-07-11 23:53:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 2172 states have (on average 1.4967771639042358) internal successors, (3251), 2172 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3251 transitions. [2022-07-11 23:53:21,825 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3251 transitions. Word has length 267 [2022-07-11 23:53:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 3251 transitions. [2022-07-11 23:53:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3251 transitions. [2022-07-11 23:53:21,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-11 23:53:21,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:21,828 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 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] [2022-07-11 23:53:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-11 23:53:21,829 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 842003861, now seen corresponding path program 1 times [2022-07-11 23:53:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:21,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382116415] [2022-07-11 23:53:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-11 23:53:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382116415] [2022-07-11 23:53:21,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382116415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:21,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:21,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373486589] [2022-07-11 23:53:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:21,962 INFO L87 Difference]: Start difference. First operand 2173 states and 3251 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:22,742 INFO L93 Difference]: Finished difference Result 4480 states and 6674 transitions. [2022-07-11 23:53:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:22,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 274 [2022-07-11 23:53:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:22,746 INFO L225 Difference]: With dead ends: 4480 [2022-07-11 23:53:22,746 INFO L226 Difference]: Without dead ends: 2330 [2022-07-11 23:53:22,748 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 [2022-07-11 23:53:22,748 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 49 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:22,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 609 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:53:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2022-07-11 23:53:22,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2153. [2022-07-11 23:53:22,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.5013940520446096) internal successors, (3231), 2152 states have internal predecessors, (3231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3231 transitions. [2022-07-11 23:53:22,790 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3231 transitions. Word has length 274 [2022-07-11 23:53:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:22,791 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3231 transitions. [2022-07-11 23:53:22,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3231 transitions. [2022-07-11 23:53:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-11 23:53:22,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:22,794 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:22,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-11 23:53:22,794 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 447101225, now seen corresponding path program 1 times [2022-07-11 23:53:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:22,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060191597] [2022-07-11 23:53:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:22,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-11 23:53:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:22,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060191597] [2022-07-11 23:53:22,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060191597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:22,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:22,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981197528] [2022-07-11 23:53:22,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:22,904 INFO L87 Difference]: Start difference. First operand 2153 states and 3231 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) [2022-07-11 23:53:24,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:24,458 INFO L93 Difference]: Finished difference Result 4420 states and 6602 transitions. [2022-07-11 23:53:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:24,459 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 278 [2022-07-11 23:53:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:24,461 INFO L225 Difference]: With dead ends: 4420 [2022-07-11 23:53:24,461 INFO L226 Difference]: Without dead ends: 2290 [2022-07-11 23:53:24,463 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 [2022-07-11 23:53:24,463 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 65 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:24,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 595 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:53:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-07-11 23:53:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2153. [2022-07-11 23:53:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 1.4995353159851301) internal successors, (3227), 2152 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:24,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3227 transitions. [2022-07-11 23:53:24,497 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3227 transitions. Word has length 278 [2022-07-11 23:53:24,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:24,498 INFO L495 AbstractCegarLoop]: Abstraction has 2153 states and 3227 transitions. [2022-07-11 23:53:24,498 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) [2022-07-11 23:53:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3227 transitions. [2022-07-11 23:53:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-11 23:53:24,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:24,501 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:24,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-11 23:53:24,501 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:24,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1893596487, now seen corresponding path program 1 times [2022-07-11 23:53:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:24,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888723304] [2022-07-11 23:53:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 453 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-07-11 23:53:24,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:24,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888723304] [2022-07-11 23:53:24,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888723304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:24,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:24,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66453480] [2022-07-11 23:53:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:24,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:24,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:24,611 INFO L87 Difference]: Start difference. First operand 2153 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:25,517 INFO L93 Difference]: Finished difference Result 4520 states and 6766 transitions. [2022-07-11 23:53:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:25,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2022-07-11 23:53:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:25,520 INFO L225 Difference]: With dead ends: 4520 [2022-07-11 23:53:25,520 INFO L226 Difference]: Without dead ends: 2390 [2022-07-11 23:53:25,521 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 [2022-07-11 23:53:25,522 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 46 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:25,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 605 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:53:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-07-11 23:53:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2265. [2022-07-11 23:53:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2264 states have (on average 1.4995583038869258) internal successors, (3395), 2264 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3395 transitions. [2022-07-11 23:53:25,552 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3395 transitions. Word has length 291 [2022-07-11 23:53:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:25,553 INFO L495 AbstractCegarLoop]: Abstraction has 2265 states and 3395 transitions. [2022-07-11 23:53:25,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3395 transitions. [2022-07-11 23:53:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-07-11 23:53:25,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:25,556 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2022-07-11 23:53:25,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-11 23:53:25,556 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash -963563067, now seen corresponding path program 1 times [2022-07-11 23:53:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:25,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93762330] [2022-07-11 23:53:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:25,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-11 23:53:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:25,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93762330] [2022-07-11 23:53:25,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93762330] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:53:25,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855103420] [2022-07-11 23:53:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:25,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:53:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:53:25,707 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) [2022-07-11 23:53:25,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:53:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:26,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:53:26,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:53:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2022-07-11 23:53:26,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:53:26,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855103420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:26,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:53:26,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 23:53:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567904161] [2022-07-11 23:53:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:53:26,610 INFO L87 Difference]: Start difference. First operand 2265 states and 3395 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) [2022-07-11 23:53:26,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:26,704 INFO L93 Difference]: Finished difference Result 5083 states and 7638 transitions. [2022-07-11 23:53:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:26,704 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 293 [2022-07-11 23:53:26,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:26,708 INFO L225 Difference]: With dead ends: 5083 [2022-07-11 23:53:26,708 INFO L226 Difference]: Without dead ends: 2841 [2022-07-11 23:53:26,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:53:26,710 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:26,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 373 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:53:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-07-11 23:53:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2841. [2022-07-11 23:53:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2840 states have (on average 1.5024647887323943) internal successors, (4267), 2840 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4267 transitions. [2022-07-11 23:53:26,749 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4267 transitions. Word has length 293 [2022-07-11 23:53:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 2841 states and 4267 transitions. [2022-07-11 23:53:26,750 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) [2022-07-11 23:53:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4267 transitions. [2022-07-11 23:53:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-11 23:53:26,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:26,754 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:26,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 23:53:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-11 23:53:26,968 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1413839336, now seen corresponding path program 1 times [2022-07-11 23:53:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:26,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563238461] [2022-07-11 23:53:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 1019 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-07-11 23:53:27,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:27,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563238461] [2022-07-11 23:53:27,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563238461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:27,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:27,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:27,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269475292] [2022-07-11 23:53:27,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:27,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:27,155 INFO L87 Difference]: Start difference. First operand 2841 states and 4267 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:28,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:28,950 INFO L93 Difference]: Finished difference Result 5830 states and 8717 transitions. [2022-07-11 23:53:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 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 420 [2022-07-11 23:53:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:28,955 INFO L225 Difference]: With dead ends: 5830 [2022-07-11 23:53:28,956 INFO L226 Difference]: Without dead ends: 3012 [2022-07-11 23:53:28,958 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 [2022-07-11 23:53:28,959 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:28,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 593 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3012 states. [2022-07-11 23:53:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3012 to 2916. [2022-07-11 23:53:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 1.492967409948542) internal successors, (4352), 2915 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4352 transitions. [2022-07-11 23:53:29,025 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4352 transitions. Word has length 420 [2022-07-11 23:53:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:29,025 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4352 transitions. [2022-07-11 23:53:29,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4352 transitions. [2022-07-11 23:53:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-11 23:53:29,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:29,029 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1] [2022-07-11 23:53:29,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-11 23:53:29,030 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:29,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:29,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1962379558, now seen corresponding path program 1 times [2022-07-11 23:53:29,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:29,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464874217] [2022-07-11 23:53:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-11 23:53:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:29,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464874217] [2022-07-11 23:53:29,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464874217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:29,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:29,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063439904] [2022-07-11 23:53:29,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:29,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:29,186 INFO L87 Difference]: Start difference. First operand 2916 states and 4352 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:29,264 INFO L93 Difference]: Finished difference Result 6400 states and 9569 transitions. [2022-07-11 23:53:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 420 [2022-07-11 23:53:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:29,269 INFO L225 Difference]: With dead ends: 6400 [2022-07-11 23:53:29,269 INFO L226 Difference]: Without dead ends: 3507 [2022-07-11 23:53:29,272 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 [2022-07-11 23:53:29,273 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 136 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:29,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 372 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:29,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-11 23:53:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-11 23:53:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3506 states have (on average 1.4951511694238449) internal successors, (5242), 3506 states have internal predecessors, (5242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5242 transitions. [2022-07-11 23:53:29,326 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5242 transitions. Word has length 420 [2022-07-11 23:53:29,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:29,327 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5242 transitions. [2022-07-11 23:53:29,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5242 transitions. [2022-07-11 23:53:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-07-11 23:53:29,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:29,332 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 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] [2022-07-11 23:53:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-11 23:53:29,333 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1740827691, now seen corresponding path program 1 times [2022-07-11 23:53:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:29,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031033553] [2022-07-11 23:53:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 921 proven. 330 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-11 23:53:29,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:29,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031033553] [2022-07-11 23:53:29,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031033553] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:53:29,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719116534] [2022-07-11 23:53:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:29,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:53:29,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:53:29,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:53:29,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 23:53:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:30,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-11 23:53:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:53:30,692 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:53:30,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-11 23:53:30,758 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-11 23:53:30,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-11 23:53:30,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-11 23:53:30,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-11 23:53:30,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-11 23:53:30,832 INFO L356 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2022-07-11 23:53:30,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 55 [2022-07-11 23:53:30,873 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-11 23:53:30,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-07-11 23:53:31,053 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:53:31,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-11 23:53:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 916 proven. 51 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2022-07-11 23:53:31,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:53:31,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 53 [2022-07-11 23:53:31,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2022-07-11 23:53:35,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 88 [2022-07-11 23:53:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 922 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-11 23:53:35,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719116534] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-11 23:53:35,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:53:35,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 12] total 22 [2022-07-11 23:53:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227168739] [2022-07-11 23:53:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:35,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:53:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:53:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=376, Unknown=1, NotChecked=0, Total=462 [2022-07-11 23:53:35,286 INFO L87 Difference]: Start difference. First operand 3507 states and 5242 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:36,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:38,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:47,494 INFO L93 Difference]: Finished difference Result 9613 states and 14334 transitions. [2022-07-11 23:53:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:53:47,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 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 421 [2022-07-11 23:53:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:47,500 INFO L225 Difference]: With dead ends: 9613 [2022-07-11 23:53:47,500 INFO L226 Difference]: Without dead ends: 6129 [2022-07-11 23:53:47,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 859 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=121, Invalid=526, Unknown=3, NotChecked=0, Total=650 [2022-07-11 23:53:47,504 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 389 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:47,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 974 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 642 Invalid, 0 Unknown, 189 Unchecked, 4.0s Time] [2022-07-11 23:53:47,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2022-07-11 23:53:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 5339. [2022-07-11 23:53:47,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5338 states have (on average 1.5044960659423006) internal successors, (8031), 5338 states have internal predecessors, (8031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8031 transitions. [2022-07-11 23:53:47,598 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8031 transitions. Word has length 421 [2022-07-11 23:53:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:47,599 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8031 transitions. [2022-07-11 23:53:47,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 8 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8031 transitions. [2022-07-11 23:53:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-11 23:53:47,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:47,604 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2022-07-11 23:53:47,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 23:53:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-07-11 23:53:47,815 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 165873834, now seen corresponding path program 1 times [2022-07-11 23:53:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021780792] [2022-07-11 23:53:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 970 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2022-07-11 23:53:48,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021780792] [2022-07-11 23:53:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021780792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:48,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:48,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:48,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121036035] [2022-07-11 23:53:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:48,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:48,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:48,019 INFO L87 Difference]: Start difference. First operand 5339 states and 8031 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:49,277 INFO L93 Difference]: Finished difference Result 10819 states and 16241 transitions. [2022-07-11 23:53:49,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:49,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 422 [2022-07-11 23:53:49,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:49,283 INFO L225 Difference]: With dead ends: 10819 [2022-07-11 23:53:49,283 INFO L226 Difference]: Without dead ends: 5503 [2022-07-11 23:53:49,287 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 [2022-07-11 23:53:49,287 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 48 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:49,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 591 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:53:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-07-11 23:53:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 5339. [2022-07-11 23:53:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5338 states have (on average 1.5026227051330086) internal successors, (8021), 5338 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 8021 transitions. [2022-07-11 23:53:49,396 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 8021 transitions. Word has length 422 [2022-07-11 23:53:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:49,396 INFO L495 AbstractCegarLoop]: Abstraction has 5339 states and 8021 transitions. [2022-07-11 23:53:49,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 8021 transitions. [2022-07-11 23:53:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-11 23:53:49,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:49,402 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:53:49,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-11 23:53:49,403 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1014141511, now seen corresponding path program 1 times [2022-07-11 23:53:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320299580] [2022-07-11 23:53:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:49,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 1008 proven. 0 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2022-07-11 23:53:49,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:49,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320299580] [2022-07-11 23:53:49,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320299580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:49,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:49,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:49,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304483533] [2022-07-11 23:53:49,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:49,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:49,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:49,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:49,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:49,535 INFO L87 Difference]: Start difference. First operand 5339 states and 8021 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:51,867 INFO L93 Difference]: Finished difference Result 10813 states and 16215 transitions. [2022-07-11 23:53:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 423 [2022-07-11 23:53:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:51,872 INFO L225 Difference]: With dead ends: 10813 [2022-07-11 23:53:51,872 INFO L226 Difference]: Without dead ends: 5449 [2022-07-11 23:53:51,876 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 [2022-07-11 23:53:51,876 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 32 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:51,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 589 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-11 23:53:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-11 23:53:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-11 23:53:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.5047205438066464) internal successors, (7969), 5296 states have internal predecessors, (7969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7969 transitions. [2022-07-11 23:53:51,997 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7969 transitions. Word has length 423 [2022-07-11 23:53:51,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:51,998 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7969 transitions. [2022-07-11 23:53:51,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7969 transitions. [2022-07-11 23:53:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-11 23:53:52,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:52,009 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2022-07-11 23:53:52,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-11 23:53:52,009 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 739346400, now seen corresponding path program 1 times [2022-07-11 23:53:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249111795] [2022-07-11 23:53:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 997 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-11 23:53:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:52,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249111795] [2022-07-11 23:53:52,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249111795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:52,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:52,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490617971] [2022-07-11 23:53:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:52,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:52,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:52,190 INFO L87 Difference]: Start difference. First operand 5297 states and 7969 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:53,263 INFO L93 Difference]: Finished difference Result 10723 states and 16105 transitions. [2022-07-11 23:53:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 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 428 [2022-07-11 23:53:53,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:53,268 INFO L225 Difference]: With dead ends: 10723 [2022-07-11 23:53:53,268 INFO L226 Difference]: Without dead ends: 5449 [2022-07-11 23:53:53,272 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 [2022-07-11 23:53:53,273 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 40 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 587 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:53:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-07-11 23:53:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5297. [2022-07-11 23:53:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.502832326283988) internal successors, (7959), 5296 states have internal predecessors, (7959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7959 transitions. [2022-07-11 23:53:53,378 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7959 transitions. Word has length 428 [2022-07-11 23:53:53,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:53,378 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7959 transitions. [2022-07-11 23:53:53,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7959 transitions. [2022-07-11 23:53:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-11 23:53:53,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:53,383 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2022-07-11 23:53:53,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-11 23:53:53,383 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:53,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1766169954, now seen corresponding path program 1 times [2022-07-11 23:53:53,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:53,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263239406] [2022-07-11 23:53:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1689 backedges. 1006 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-11 23:53:53,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:53,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263239406] [2022-07-11 23:53:53,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263239406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:53,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:53,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663682254] [2022-07-11 23:53:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:53,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:53,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:53,528 INFO L87 Difference]: Start difference. First operand 5297 states and 7959 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:55,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:55,331 INFO L93 Difference]: Finished difference Result 10683 states and 16035 transitions. [2022-07-11 23:53:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 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 429 [2022-07-11 23:53:55,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:55,335 INFO L225 Difference]: With dead ends: 10683 [2022-07-11 23:53:55,335 INFO L226 Difference]: Without dead ends: 5409 [2022-07-11 23:53:55,338 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 [2022-07-11 23:53:55,339 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 34 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:55,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 579 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2022-07-11 23:53:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 5297. [2022-07-11 23:53:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 1.5009441087613293) internal successors, (7949), 5296 states have internal predecessors, (7949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7949 transitions. [2022-07-11 23:53:55,446 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7949 transitions. Word has length 429 [2022-07-11 23:53:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:55,450 INFO L495 AbstractCegarLoop]: Abstraction has 5297 states and 7949 transitions. [2022-07-11 23:53:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7949 transitions. [2022-07-11 23:53:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-07-11 23:53:55,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:55,464 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1] [2022-07-11 23:53:55,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-11 23:53:55,464 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:55,465 INFO L85 PathProgramCache]: Analyzing trace with hash 880480681, now seen corresponding path program 1 times [2022-07-11 23:53:55,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:55,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479981314] [2022-07-11 23:53:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:55,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-11 23:53:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479981314] [2022-07-11 23:53:55,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479981314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:55,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:55,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:55,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720627564] [2022-07-11 23:53:55,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:55,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:55,693 INFO L87 Difference]: Start difference. First operand 5297 states and 7949 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:56,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:57,127 INFO L93 Difference]: Finished difference Result 11137 states and 16683 transitions. [2022-07-11 23:53:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 437 [2022-07-11 23:53:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:57,133 INFO L225 Difference]: With dead ends: 11137 [2022-07-11 23:53:57,133 INFO L226 Difference]: Without dead ends: 5863 [2022-07-11 23:53:57,136 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 [2022-07-11 23:53:57,136 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 81 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:57,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2022-07-11 23:53:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5369. [2022-07-11 23:53:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5368 states have (on average 1.4990685543964233) internal successors, (8047), 5368 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8047 transitions. [2022-07-11 23:53:57,224 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8047 transitions. Word has length 437 [2022-07-11 23:53:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:57,224 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8047 transitions. [2022-07-11 23:53:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8047 transitions. [2022-07-11 23:53:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-07-11 23:53:57,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:57,229 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1] [2022-07-11 23:53:57,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-11 23:53:57,230 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:57,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:57,230 INFO L85 PathProgramCache]: Analyzing trace with hash -197759248, now seen corresponding path program 1 times [2022-07-11 23:53:57,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:57,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488619154] [2022-07-11 23:53:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-11 23:53:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:57,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488619154] [2022-07-11 23:53:57,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488619154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:57,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:57,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209025634] [2022-07-11 23:53:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:57,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:57,372 INFO L87 Difference]: Start difference. First operand 5369 states and 8047 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:57,931 INFO L93 Difference]: Finished difference Result 11059 states and 16529 transitions. [2022-07-11 23:53:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2022-07-11 23:53:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:57,936 INFO L225 Difference]: With dead ends: 11059 [2022-07-11 23:53:57,936 INFO L226 Difference]: Without dead ends: 5713 [2022-07-11 23:53:57,939 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 [2022-07-11 23:53:57,939 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 82 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:57,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 619 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2022-07-11 23:53:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5369. [2022-07-11 23:53:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 5368 states have (on average 1.4972056631892698) internal successors, (8037), 5368 states have internal predecessors, (8037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 8037 transitions. [2022-07-11 23:53:58,043 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 8037 transitions. Word has length 438 [2022-07-11 23:53:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:58,044 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 8037 transitions. [2022-07-11 23:53:58,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 8037 transitions. [2022-07-11 23:53:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-07-11 23:53:58,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:58,048 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:58,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-11 23:53:58,048 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:58,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1286524218, now seen corresponding path program 1 times [2022-07-11 23:53:58,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:58,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429480840] [2022-07-11 23:53:58,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:58,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1120 proven. 0 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2022-07-11 23:53:58,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:58,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429480840] [2022-07-11 23:53:58,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429480840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:58,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:58,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:58,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990469216] [2022-07-11 23:53:58,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:58,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:58,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:58,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:58,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:58,173 INFO L87 Difference]: Start difference. First operand 5369 states and 8037 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:59,256 INFO L93 Difference]: Finished difference Result 10757 states and 16077 transitions. [2022-07-11 23:53:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:59,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 444 [2022-07-11 23:53:59,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:59,260 INFO L225 Difference]: With dead ends: 10757 [2022-07-11 23:53:59,260 INFO L226 Difference]: Without dead ends: 5411 [2022-07-11 23:53:59,263 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 [2022-07-11 23:53:59,263 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 14 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:59,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 559 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:53:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2022-07-11 23:53:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5379. [2022-07-11 23:53:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.491074748977315) internal successors, (8019), 5378 states have internal predecessors, (8019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8019 transitions. [2022-07-11 23:53:59,349 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8019 transitions. Word has length 444 [2022-07-11 23:53:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:59,350 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8019 transitions. [2022-07-11 23:53:59,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8019 transitions. [2022-07-11 23:53:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-07-11 23:53:59,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:59,354 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-11 23:53:59,354 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2012653471, now seen corresponding path program 1 times [2022-07-11 23:53:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:59,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206279659] [2022-07-11 23:53:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 1166 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-11 23:53:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206279659] [2022-07-11 23:53:59,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206279659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:59,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:59,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:59,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062753232] [2022-07-11 23:53:59,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:59,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:59,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:59,511 INFO L87 Difference]: Start difference. First operand 5379 states and 8019 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:00,013 INFO L93 Difference]: Finished difference Result 11079 states and 16473 transitions. [2022-07-11 23:54:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 445 [2022-07-11 23:54:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:00,018 INFO L225 Difference]: With dead ends: 11079 [2022-07-11 23:54:00,018 INFO L226 Difference]: Without dead ends: 5723 [2022-07-11 23:54:00,021 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 [2022-07-11 23:54:00,022 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 63 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:00,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 575 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:54:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2022-07-11 23:54:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5379. [2022-07-11 23:54:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4892153216809223) internal successors, (8009), 5378 states have internal predecessors, (8009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8009 transitions. [2022-07-11 23:54:00,120 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8009 transitions. Word has length 445 [2022-07-11 23:54:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:00,120 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 8009 transitions. [2022-07-11 23:54:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8009 transitions. [2022-07-11 23:54:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-07-11 23:54:00,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:00,125 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:00,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-11 23:54:00,125 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:00,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:00,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2093997469, now seen corresponding path program 1 times [2022-07-11 23:54:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:00,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984749749] [2022-07-11 23:54:00,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:00,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 1175 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-11 23:54:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984749749] [2022-07-11 23:54:00,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984749749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:00,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:00,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:54:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087330483] [2022-07-11 23:54:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:00,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:54:00,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:54:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:54:00,266 INFO L87 Difference]: Start difference. First operand 5379 states and 8009 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:01,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:02,009 INFO L93 Difference]: Finished difference Result 11059 states and 16433 transitions. [2022-07-11 23:54:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:02,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 446 [2022-07-11 23:54:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:02,015 INFO L225 Difference]: With dead ends: 11059 [2022-07-11 23:54:02,015 INFO L226 Difference]: Without dead ends: 5703 [2022-07-11 23:54:02,018 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 [2022-07-11 23:54:02,018 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 60 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:02,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:54:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-11 23:54:02,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-11 23:54:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4873558943845295) internal successors, (7999), 5378 states have internal predecessors, (7999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7999 transitions. [2022-07-11 23:54:02,109 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7999 transitions. Word has length 446 [2022-07-11 23:54:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:02,109 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7999 transitions. [2022-07-11 23:54:02,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7999 transitions. [2022-07-11 23:54:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-07-11 23:54:02,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:02,114 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:02,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-11 23:54:02,114 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1999294986, now seen corresponding path program 1 times [2022-07-11 23:54:02,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:02,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090756599] [2022-07-11 23:54:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 1148 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-11 23:54:02,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:02,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090756599] [2022-07-11 23:54:02,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090756599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:02,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:02,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:54:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739694622] [2022-07-11 23:54:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:02,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:54:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:54:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:54:02,272 INFO L87 Difference]: Start difference. First operand 5379 states and 7999 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:04,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:04,581 INFO L93 Difference]: Finished difference Result 11059 states and 16413 transitions. [2022-07-11 23:54:04,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 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 448 [2022-07-11 23:54:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:04,586 INFO L225 Difference]: With dead ends: 11059 [2022-07-11 23:54:04,586 INFO L226 Difference]: Without dead ends: 5703 [2022-07-11 23:54:04,589 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 [2022-07-11 23:54:04,589 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 62 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:04,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 577 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-11 23:54:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-11 23:54:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5379. [2022-07-11 23:54:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4854964670881368) internal successors, (7989), 5378 states have internal predecessors, (7989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7989 transitions. [2022-07-11 23:54:04,679 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7989 transitions. Word has length 448 [2022-07-11 23:54:04,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:04,679 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7989 transitions. [2022-07-11 23:54:04,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7989 transitions. [2022-07-11 23:54:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-07-11 23:54:04,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:04,684 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:04,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-11 23:54:04,684 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1847149926, now seen corresponding path program 1 times [2022-07-11 23:54:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:04,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605602783] [2022-07-11 23:54:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1870 backedges. 1157 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2022-07-11 23:54:04,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:04,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605602783] [2022-07-11 23:54:04,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605602783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:04,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:04,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:54:04,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029855005] [2022-07-11 23:54:04,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:04,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:54:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:04,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:54:04,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:54:04,836 INFO L87 Difference]: Start difference. First operand 5379 states and 7989 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:06,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:06,965 INFO L93 Difference]: Finished difference Result 10979 states and 16263 transitions. [2022-07-11 23:54:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:06,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 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 449 [2022-07-11 23:54:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:06,971 INFO L225 Difference]: With dead ends: 10979 [2022-07-11 23:54:06,971 INFO L226 Difference]: Without dead ends: 5623 [2022-07-11 23:54:06,979 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 [2022-07-11 23:54:06,980 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 51 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:06,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 595 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-11 23:54:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2022-07-11 23:54:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5379. [2022-07-11 23:54:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 5378 states have (on average 1.4836370397917442) internal successors, (7979), 5378 states have internal predecessors, (7979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 7979 transitions. [2022-07-11 23:54:07,078 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 7979 transitions. Word has length 449 [2022-07-11 23:54:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:07,078 INFO L495 AbstractCegarLoop]: Abstraction has 5379 states and 7979 transitions. [2022-07-11 23:54:07,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 7979 transitions. [2022-07-11 23:54:07,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-07-11 23:54:07,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:07,084 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:07,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-11 23:54:07,084 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1852972643, now seen corresponding path program 1 times [2022-07-11 23:54:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:07,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346197161] [2022-07-11 23:54:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1086 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-07-11 23:54:07,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:07,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346197161] [2022-07-11 23:54:07,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346197161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:07,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:07,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:54:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420474661] [2022-07-11 23:54:07,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:54:07,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:54:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:54:07,256 INFO L87 Difference]: Start difference. First operand 5379 states and 7979 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:09,239 INFO L93 Difference]: Finished difference Result 13569 states and 20138 transitions. [2022-07-11 23:54:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:54:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 450 [2022-07-11 23:54:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:09,247 INFO L225 Difference]: With dead ends: 13569 [2022-07-11 23:54:09,247 INFO L226 Difference]: Without dead ends: 8213 [2022-07-11 23:54:09,250 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 [2022-07-11 23:54:09,250 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:09,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 924 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:54:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8213 states. [2022-07-11 23:54:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8213 to 6308. [2022-07-11 23:54:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6308 states, 6307 states have (on average 1.4881877279213571) internal successors, (9386), 6307 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 9386 transitions. [2022-07-11 23:54:09,374 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 9386 transitions. Word has length 450 [2022-07-11 23:54:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:09,374 INFO L495 AbstractCegarLoop]: Abstraction has 6308 states and 9386 transitions. [2022-07-11 23:54:09,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 9386 transitions. [2022-07-11 23:54:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-11 23:54:09,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:09,380 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:09,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-11 23:54:09,380 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1946132669, now seen corresponding path program 1 times [2022-07-11 23:54:09,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:09,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962343991] [2022-07-11 23:54:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:09,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1140 proven. 78 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2022-07-11 23:54:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:09,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962343991] [2022-07-11 23:54:09,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962343991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:09,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595681113] [2022-07-11 23:54:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:09,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:54:09,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:54:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 23:54:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:10,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:54:10,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:54:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1899 backedges. 1356 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-07-11 23:54:10,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:54:10,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595681113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:10,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:54:10,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 23:54:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630975503] [2022-07-11 23:54:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:54:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:54:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:54:10,797 INFO L87 Difference]: Start difference. First operand 6308 states and 9386 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:10,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:10,948 INFO L93 Difference]: Finished difference Result 13654 states and 20333 transitions. [2022-07-11 23:54:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:54:10,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 451 [2022-07-11 23:54:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:10,955 INFO L225 Difference]: With dead ends: 13654 [2022-07-11 23:54:10,956 INFO L226 Difference]: Without dead ends: 7369 [2022-07-11 23:54:10,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:54:10,960 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 131 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:10,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 375 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:54:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-11 23:54:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7369. [2022-07-11 23:54:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7369 states, 7368 states have (on average 1.488870792616721) internal successors, (10970), 7368 states have internal predecessors, (10970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7369 states to 7369 states and 10970 transitions. [2022-07-11 23:54:11,135 INFO L78 Accepts]: Start accepts. Automaton has 7369 states and 10970 transitions. Word has length 451 [2022-07-11 23:54:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:11,136 INFO L495 AbstractCegarLoop]: Abstraction has 7369 states and 10970 transitions. [2022-07-11 23:54:11,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 7369 states and 10970 transitions. [2022-07-11 23:54:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-07-11 23:54:11,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:11,142 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:11,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 23:54:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:11,343 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 306545066, now seen corresponding path program 1 times [2022-07-11 23:54:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462699498] [2022-07-11 23:54:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1095 proven. 68 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2022-07-11 23:54:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462699498] [2022-07-11 23:54:11,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462699498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388237462] [2022-07-11 23:54:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:54:11,488 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:54:11,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 23:54:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:12,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:54:12,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:54:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-07-11 23:54:12,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:54:12,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388237462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:12,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:54:12,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 23:54:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388723311] [2022-07-11 23:54:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:12,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:54:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:54:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:54:12,698 INFO L87 Difference]: Start difference. First operand 7369 states and 10970 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:12,888 INFO L93 Difference]: Finished difference Result 15776 states and 23501 transitions. [2022-07-11 23:54:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:54:12,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 455 [2022-07-11 23:54:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:12,897 INFO L225 Difference]: With dead ends: 15776 [2022-07-11 23:54:12,897 INFO L226 Difference]: Without dead ends: 8430 [2022-07-11 23:54:12,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:54:12,899 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 151 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:12,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 374 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:54:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2022-07-11 23:54:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8430. [2022-07-11 23:54:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.4896191719065133) internal successors, (12556), 8429 states have internal predecessors, (12556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12556 transitions. [2022-07-11 23:54:13,065 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12556 transitions. Word has length 455 [2022-07-11 23:54:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:13,065 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12556 transitions. [2022-07-11 23:54:13,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12556 transitions. [2022-07-11 23:54:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-07-11 23:54:13,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:13,073 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:54:13,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-11 23:54:13,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:13,287 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1015527261, now seen corresponding path program 1 times [2022-07-11 23:54:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:13,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848479863] [2022-07-11 23:54:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1959 backedges. 1114 proven. 0 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2022-07-11 23:54:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848479863] [2022-07-11 23:54:13,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848479863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:13,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:13,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:54:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216512638] [2022-07-11 23:54:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:54:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:54:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:54:13,424 INFO L87 Difference]: Start difference. First operand 8430 states and 12556 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:14,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:14,823 INFO L93 Difference]: Finished difference Result 17015 states and 25307 transitions. [2022-07-11 23:54:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 465 [2022-07-11 23:54:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:14,831 INFO L225 Difference]: With dead ends: 17015 [2022-07-11 23:54:14,831 INFO L226 Difference]: Without dead ends: 8608 [2022-07-11 23:54:14,835 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 [2022-07-11 23:54:14,836 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 36 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:14,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 577 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:54:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8608 states. [2022-07-11 23:54:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8608 to 8430. [2022-07-11 23:54:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.487720963340847) internal successors, (12540), 8429 states have internal predecessors, (12540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12540 transitions. [2022-07-11 23:54:15,024 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12540 transitions. Word has length 465 [2022-07-11 23:54:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:15,024 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12540 transitions. [2022-07-11 23:54:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12540 transitions. [2022-07-11 23:54:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2022-07-11 23:54:15,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:15,033 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:54:15,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-11 23:54:15,033 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:15,033 INFO L85 PathProgramCache]: Analyzing trace with hash -599888121, now seen corresponding path program 1 times [2022-07-11 23:54:15,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:15,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134552971] [2022-07-11 23:54:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:15,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 1127 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-07-11 23:54:15,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:15,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134552971] [2022-07-11 23:54:15,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134552971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:15,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:15,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:54:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469166755] [2022-07-11 23:54:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:15,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:54:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:54:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:54:15,171 INFO L87 Difference]: Start difference. First operand 8430 states and 12540 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:16,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:16,602 INFO L93 Difference]: Finished difference Result 16951 states and 25193 transitions. [2022-07-11 23:54:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:54:16,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2022-07-11 23:54:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:16,610 INFO L225 Difference]: With dead ends: 16951 [2022-07-11 23:54:16,610 INFO L226 Difference]: Without dead ends: 8544 [2022-07-11 23:54:16,612 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 [2022-07-11 23:54:16,612 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 30 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:16,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 569 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:54:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8544 states. [2022-07-11 23:54:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8544 to 8430. [2022-07-11 23:54:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8430 states, 8429 states have (on average 1.485822754775181) internal successors, (12524), 8429 states have internal predecessors, (12524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 12524 transitions. [2022-07-11 23:54:16,777 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 12524 transitions. Word has length 467 [2022-07-11 23:54:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:16,777 INFO L495 AbstractCegarLoop]: Abstraction has 8430 states and 12524 transitions. [2022-07-11 23:54:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 12524 transitions. [2022-07-11 23:54:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-11 23:54:16,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:16,785 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:54:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-11 23:54:16,785 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1585745039, now seen corresponding path program 1 times [2022-07-11 23:54:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:16,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285651736] [2022-07-11 23:54:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1128 proven. 338 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-07-11 23:54:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285651736] [2022-07-11 23:54:17,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285651736] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058807636] [2022-07-11 23:54:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:17,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:17,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:54:17,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:54:17,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 23:54:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:18,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-11 23:54:18,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:54:18,610 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:54:18,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-11 23:54:18,644 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:54:18,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-11 23:54:18,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-11 23:54:18,687 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:54:18,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-11 23:54:18,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-07-11 23:54:18,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-11 23:54:18,721 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-11 23:54:18,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 33 [2022-07-11 23:54:18,777 INFO L356 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-07-11 23:54:18,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 45 [2022-07-11 23:54:18,837 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:54:18,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2022-07-11 23:54:18,887 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-11 23:54:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1304 proven. 142 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2022-07-11 23:54:18,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:54:19,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2022-07-11 23:54:19,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-07-11 23:54:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1329 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-07-11 23:54:20,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058807636] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:20,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:54:20,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 9] total 22 [2022-07-11 23:54:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116399481] [2022-07-11 23:54:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:54:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:54:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=407, Unknown=1, NotChecked=0, Total=462 [2022-07-11 23:54:20,829 INFO L87 Difference]: Start difference. First operand 8430 states and 12524 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:21,211 INFO L93 Difference]: Finished difference Result 18546 states and 27714 transitions. [2022-07-11 23:54:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:54:21,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 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 479 [2022-07-11 23:54:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:21,221 INFO L225 Difference]: With dead ends: 18546 [2022-07-11 23:54:21,221 INFO L226 Difference]: Without dead ends: 10139 [2022-07-11 23:54:21,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=445, Unknown=1, NotChecked=0, Total=506 [2022-07-11 23:54:21,226 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 205 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:21,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 663 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2022-07-11 23:54:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2022-07-11 23:54:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 8899. [2022-07-11 23:54:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 8898 states have (on average 1.4995504607777028) internal successors, (13343), 8898 states have internal predecessors, (13343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13343 transitions. [2022-07-11 23:54:21,436 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13343 transitions. Word has length 479 [2022-07-11 23:54:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:21,436 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13343 transitions. [2022-07-11 23:54:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13343 transitions. [2022-07-11 23:54:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-11 23:54:21,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:21,443 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:54:21,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 23:54:21,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-07-11 23:54:21,646 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1828332653, now seen corresponding path program 1 times [2022-07-11 23:54:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:21,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071744656] [2022-07-11 23:54:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2136 trivial. 0 not checked. [2022-07-11 23:54:22,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:22,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071744656] [2022-07-11 23:54:22,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071744656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:54:22,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:54:22,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:54:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713495842] [2022-07-11 23:54:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:54:22,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:54:22,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:54:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:54:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:54:22,083 INFO L87 Difference]: Start difference. First operand 8899 states and 13343 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:23,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:23,353 INFO L93 Difference]: Finished difference Result 17795 states and 26682 transitions. [2022-07-11 23:54:23,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:54:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 479 [2022-07-11 23:54:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:23,361 INFO L225 Difference]: With dead ends: 17795 [2022-07-11 23:54:23,362 INFO L226 Difference]: Without dead ends: 8899 [2022-07-11 23:54:23,367 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 [2022-07-11 23:54:23,367 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 7 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:23,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 679 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:54:23,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8899 states. [2022-07-11 23:54:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8899 to 8899. [2022-07-11 23:54:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8899 states, 8898 states have (on average 1.4994380759721286) internal successors, (13342), 8898 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8899 states to 8899 states and 13342 transitions. [2022-07-11 23:54:23,620 INFO L78 Accepts]: Start accepts. Automaton has 8899 states and 13342 transitions. Word has length 479 [2022-07-11 23:54:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:23,620 INFO L495 AbstractCegarLoop]: Abstraction has 8899 states and 13342 transitions. [2022-07-11 23:54:23,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8899 states and 13342 transitions. [2022-07-11 23:54:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-11 23:54:23,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:23,629 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-11 23:54:23,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-11 23:54:23,629 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash 656047471, now seen corresponding path program 1 times [2022-07-11 23:54:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:23,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398828340] [2022-07-11 23:54:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1082 proven. 225 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2022-07-11 23:54:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:24,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398828340] [2022-07-11 23:54:24,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398828340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:24,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029392605] [2022-07-11 23:54:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:24,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:24,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:54:24,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:54:24,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 23:54:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:25,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 153 conjunts are in the unsatisfiable core [2022-07-11 23:54:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:54:25,929 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:54:25,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-11 23:54:26,011 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-11 23:54:26,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-11 23:54:26,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-11 23:54:26,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-11 23:54:26,064 INFO L356 Elim1Store]: treesize reduction 31, result has 44.6 percent of original size [2022-07-11 23:54:26,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 82 [2022-07-11 23:54:26,082 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-11 23:54:26,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 64 [2022-07-11 23:54:26,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:26,113 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-11 23:54:26,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 52 [2022-07-11 23:54:26,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:26,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 141 [2022-07-11 23:54:26,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:26,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 135 [2022-07-11 23:54:26,280 INFO L356 Elim1Store]: treesize reduction 344, result has 22.5 percent of original size [2022-07-11 23:54:26,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 183 [2022-07-11 23:54:27,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 217 [2022-07-11 23:54:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,813 INFO L356 Elim1Store]: treesize reduction 270, result has 22.6 percent of original size [2022-07-11 23:54:27,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 232 treesize of output 213 [2022-07-11 23:54:27,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:27,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 259 treesize of output 210 [2022-07-11 23:54:29,292 INFO L356 Elim1Store]: treesize reduction 106, result has 42.7 percent of original size [2022-07-11 23:54:29,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 177 [2022-07-11 23:54:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:29,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 78 [2022-07-11 23:54:29,572 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:54:29,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 66 [2022-07-11 23:54:29,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:29,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 66 [2022-07-11 23:54:29,603 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:54:29,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 78 [2022-07-11 23:54:30,048 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-11 23:54:30,049 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 134 treesize of output 147 [2022-07-11 23:54:30,079 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-11 23:54:30,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 124 [2022-07-11 23:54:30,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:30,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 101 [2022-07-11 23:54:30,275 INFO L356 Elim1Store]: treesize reduction 154, result has 15.4 percent of original size [2022-07-11 23:54:30,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 113 [2022-07-11 23:54:31,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 92 [2022-07-11 23:54:31,169 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-11 23:54:31,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 104 [2022-07-11 23:54:31,269 INFO L356 Elim1Store]: treesize reduction 72, result has 41.5 percent of original size [2022-07-11 23:54:31,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 188 treesize of output 183 [2022-07-11 23:54:31,301 INFO L356 Elim1Store]: treesize reduction 52, result has 42.9 percent of original size [2022-07-11 23:54:31,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 148 [2022-07-11 23:54:31,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-11 23:54:31,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 145 [2022-07-11 23:54:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,493 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-11 23:54:31,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 161 treesize of output 185 [2022-07-11 23:54:31,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:31,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 152 [2022-07-11 23:54:32,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 180 [2022-07-11 23:54:32,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,564 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-11 23:54:32,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 191 [2022-07-11 23:54:32,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:32,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 158 [2022-07-11 23:54:34,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,462 INFO L356 Elim1Store]: treesize reduction 161, result has 21.1 percent of original size [2022-07-11 23:54:34,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 95 [2022-07-11 23:54:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2022-07-11 23:54:34,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-07-11 23:54:34,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,628 INFO L356 Elim1Store]: treesize reduction 131, result has 25.6 percent of original size [2022-07-11 23:54:34,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 106 [2022-07-11 23:54:34,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 79 [2022-07-11 23:54:34,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:34,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 81 [2022-07-11 23:54:35,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:35,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 71 [2022-07-11 23:54:35,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:35,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 49 [2022-07-11 23:54:35,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:35,367 INFO L356 Elim1Store]: treesize reduction 55, result has 27.6 percent of original size [2022-07-11 23:54:35,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 58 [2022-07-11 23:54:35,443 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-11 23:54:35,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 31 [2022-07-11 23:54:35,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-11 23:54:35,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:35,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-11 23:54:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 1202 proven. 876 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-11 23:54:35,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:54:35,579 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23814 (Array Int Int))) (not (= 8640 (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 84)) v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))))) (= |c_ULTIMATE.start_ssl3_accept_#t~mem145#1| 0)) is different from false [2022-07-11 23:54:35,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2022-07-11 23:54:35,798 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_114 Int)) (not (= 8640 (let ((.cse0 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0 8448)) v_arrayElimCell_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0))))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0)) is different from false [2022-07-11 23:54:35,810 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_114 Int)) (not (= (let ((.cse0 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0 v_ArrVal_23808) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64) v_ArrVal_23809) .cse0 8448)) v_arrayElimCell_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse0)) 8640))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0)) is different from false [2022-07-11 23:54:35,834 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_arrayElimCell_114 Int) (v_ArrVal_23805 Int)) (let ((.cse1 (let ((.cse4 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse4))) (store |c_#memory_int| .cse3 (store (select |c_#memory_int| .cse3) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse4) 172) v_ArrVal_23805)))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base|))) (or (= (select .cse0 (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store .cse0 .cse2 v_ArrVal_23808) (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64) v_ArrVal_23809) .cse2 8448)) v_arrayElimCell_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640)))))) is different from false [2022-07-11 23:54:36,090 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_23808 Int) (v_ArrVal_23809 Int) (v_ArrVal_23814 (Array Int Int)) (v_ArrVal_23802 Int) (v_arrayElimCell_114 Int) (v_ArrVal_23805 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 64))) (let ((.cse1 (let ((.cse6 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 176))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse3 v_ArrVal_23802))) (.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse6))) (store .cse4 .cse5 (store (select .cse4 .cse5) (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse6) 172) v_ArrVal_23805)))))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base|))) (or (= (select .cse0 (+ 92 |c_ULTIMATE.start_ssl3_accept_~s#1.offset|)) 0) (not (= (let ((.cse2 (+ |c_ULTIMATE.start_ssl3_accept_~s#1.offset| 52))) (select (select (store (store .cse1 |c_ULTIMATE.start_ssl3_accept_~s#1.base| (store (store (store .cse0 .cse2 v_ArrVal_23808) .cse3 v_ArrVal_23809) .cse2 8448)) v_arrayElimCell_114 v_ArrVal_23814) |c_ULTIMATE.start_ssl3_accept_~s#1.base|) .cse2)) 8640))))))) is different from false [2022-07-11 23:54:37,794 INFO L356 Elim1Store]: treesize reduction 5781, result has 4.7 percent of original size [2022-07-11 23:54:37,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 9571 treesize of output 9132 [2022-07-11 23:54:37,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:37,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:54:37,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:54:37,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:54:37,884 INFO L356 Elim1Store]: treesize reduction 181, result has 30.9 percent of original size [2022-07-11 23:54:37,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 579 treesize of output 538 [2022-07-11 23:54:37,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-11 23:55:15,560 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:55:15,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20735260715 treesize of output 1 [2022-07-11 23:55:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2136 backedges. 947 proven. 746 refuted. 61 times theorem prover too weak. 103 trivial. 279 not checked. [2022-07-11 23:55:15,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029392605] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:55:15,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 23:55:15,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 24] total 56 [2022-07-11 23:55:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648689454] [2022-07-11 23:55:15,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 23:55:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-11 23:55:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:55:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-11 23:55:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=2190, Unknown=28, NotChecked=510, Total=3080 [2022-07-11 23:55:15,574 INFO L87 Difference]: Start difference. First operand 8899 states and 13342 transitions. Second operand has 56 states, 56 states have (on average 16.803571428571427) internal successors, (941), 56 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:55:17,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:55:18,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:55:22,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:55:24,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:55:26,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []