./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.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.16.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:56:17,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:56:17,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:56:17,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:56:17,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:56:17,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:56:17,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:56:17,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:56:17,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:56:17,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:56:17,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:56:17,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:56:17,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:56:17,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:56:17,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:56:17,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:56:17,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:56:17,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:56:17,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:56:17,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:56:17,239 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:56:17,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:56:17,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:56:17,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:56:17,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:56:17,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:56:17,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:56:17,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:56:17,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:56:17,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:56:17,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:56:17,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:56:17,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:56:17,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:56:17,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:56:17,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:56:17,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:56:17,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:56:17,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:56:17,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:56:17,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:56:17,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:56:17,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:56:17,281 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:56:17,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:56:17,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:56:17,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:56:17,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:56:17,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:56:17,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:56:17,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:56:17,283 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:56:17,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:56:17,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:56:17,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:56:17,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:56:17,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:56:17,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:56:17,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:56:17,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:56:17,285 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:56:17,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:56:17,286 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:56:17,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:56:17,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:56:17,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:56:17,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:56:17,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:56:17,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:56:17,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:56:17,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:56:17,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:56:17,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:56:17,288 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:56:17,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:56:17,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:56:17,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b77735b82f790dcf6393a6fb65098490b7c65f26539a1354e286eeb25926e8 [2022-07-11 23:56:17,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:56:17,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:56:17,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:56:17,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:56:17,470 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:56:17,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2022-07-11 23:56:17,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977463d94/c0ff070256d444bba5bb874fc2187cac/FLAGa28cfb6d4 [2022-07-11 23:56:17,897 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:56:17,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.16.i.cil-2.c [2022-07-11 23:56:17,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977463d94/c0ff070256d444bba5bb874fc2187cac/FLAGa28cfb6d4 [2022-07-11 23:56:18,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977463d94/c0ff070256d444bba5bb874fc2187cac [2022-07-11 23:56:18,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:56:18,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:56:18,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:56:18,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:56:18,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:56:18,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627fe00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18, skipping insertion in model container [2022-07-11 23:56:18,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:56:18,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:56:18,581 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.16.i.cil-2.c[77660,77673] [2022-07-11 23:56:18,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:56:18,595 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:56:18,680 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.16.i.cil-2.c[77660,77673] [2022-07-11 23:56:18,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:56:18,707 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:56:18,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18 WrapperNode [2022-07-11 23:56:18,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:56:18,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:56:18,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:56:18,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:56:18,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,787 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 810 [2022-07-11 23:56:18,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:56:18,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:56:18,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:56:18,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:56:18,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:56:18,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:56:18,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:56:18,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:56:18,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (1/1) ... [2022-07-11 23:56:18,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:56:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:56:18,929 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 23:56:18,936 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 23:56:18,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-11 23:56:18,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:56:18,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:56:19,090 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:56:19,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:56:19,102 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:56:21,339 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-11 23:56:21,340 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-11 23:56:21,340 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:56:21,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:56:21,347 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:56:21,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:56:21 BoogieIcfgContainer [2022-07-11 23:56:21,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:56:21,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:56:21,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:56:21,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:56:21,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:56:18" (1/3) ... [2022-07-11 23:56:21,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770132d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:56:21, skipping insertion in model container [2022-07-11 23:56:21,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:56:18" (2/3) ... [2022-07-11 23:56:21,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770132d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:56:21, skipping insertion in model container [2022-07-11 23:56:21,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:56:21" (3/3) ... [2022-07-11 23:56:21,357 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.16.i.cil-2.c [2022-07-11 23:56:21,367 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:56:21,368 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:56:21,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:56:21,428 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@4dfb5744, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@218092b9 [2022-07-11 23:56:21,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:56:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 23:56:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-11 23:56:21,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:21,439 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 23:56:21,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2069453347, now seen corresponding path program 1 times [2022-07-11 23:56:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:21,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522685359] [2022-07-11 23:56:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:21,899 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 23:56:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:21,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522685359] [2022-07-11 23:56:21,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522685359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:21,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:21,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605340955] [2022-07-11 23:56:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:21,927 INFO L87 Difference]: Start difference. First operand has 159 states, 157 states have (on average 1.732484076433121) internal successors, (272), 158 states have internal predecessors, (272), 0 states have call successors, (0), 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 11.5) 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 23:56:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:22,671 INFO L93 Difference]: Finished difference Result 447 states and 768 transitions. [2022-07-11 23:56:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:22,673 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 23:56:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:22,685 INFO L225 Difference]: With dead ends: 447 [2022-07-11 23:56:22,685 INFO L226 Difference]: Without dead ends: 273 [2022-07-11 23:56:22,690 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 23:56:22,693 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 172 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 495 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 23:56:22,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 495 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:56:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-07-11 23:56:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 186. [2022-07-11 23:56:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.627027027027027) internal successors, (301), 185 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 23:56:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 301 transitions. [2022-07-11 23:56:22,732 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 301 transitions. Word has length 46 [2022-07-11 23:56:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:22,732 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 301 transitions. [2022-07-11 23:56:22,733 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 23:56:22,733 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 301 transitions. [2022-07-11 23:56:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-11 23:56:22,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:22,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:22,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:56:22,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:22,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 413309822, now seen corresponding path program 1 times [2022-07-11 23:56:22,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:22,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394693375] [2022-07-11 23:56:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:22,899 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 23:56:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394693375] [2022-07-11 23:56:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394693375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:22,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:22,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512668053] [2022-07-11 23:56:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:22,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:22,905 INFO L87 Difference]: Start difference. First operand 186 states and 301 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 23:56:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:23,595 INFO L93 Difference]: Finished difference Result 390 states and 629 transitions. [2022-07-11 23:56:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:23,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-07-11 23:56:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:23,597 INFO L225 Difference]: With dead ends: 390 [2022-07-11 23:56:23,597 INFO L226 Difference]: Without dead ends: 214 [2022-07-11 23:56:23,598 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 23:56:23,598 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 22 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:23,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 523 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:56:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-11 23:56:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2022-07-11 23:56:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.6326530612244898) internal successors, (320), 196 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 23:56:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 320 transitions. [2022-07-11 23:56:23,608 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 320 transitions. Word has length 47 [2022-07-11 23:56:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:23,609 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 320 transitions. [2022-07-11 23:56:23,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 23:56:23,609 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 320 transitions. [2022-07-11 23:56:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-11 23:56:23,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:23,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:56:23,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1553389893, now seen corresponding path program 1 times [2022-07-11 23:56:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:23,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535811397] [2022-07-11 23:56:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:23,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535811397] [2022-07-11 23:56:23,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535811397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:23,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:23,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478050636] [2022-07-11 23:56:23,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:23,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:23,701 INFO L87 Difference]: Start difference. First operand 197 states and 320 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:24,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:24,235 INFO L93 Difference]: Finished difference Result 538 states and 879 transitions. [2022-07-11 23:56:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:24,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-11 23:56:24,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:24,237 INFO L225 Difference]: With dead ends: 538 [2022-07-11 23:56:24,237 INFO L226 Difference]: Without dead ends: 362 [2022-07-11 23:56:24,238 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 23:56:24,239 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 161 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:24,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 704 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-11 23:56:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 229. [2022-07-11 23:56:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6271929824561404) internal successors, (371), 228 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 23:56:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 371 transitions. [2022-07-11 23:56:24,249 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 371 transitions. Word has length 60 [2022-07-11 23:56:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 371 transitions. [2022-07-11 23:56:24,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 371 transitions. [2022-07-11 23:56:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:56:24,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:24,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:24,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:56:24,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1967864692, now seen corresponding path program 1 times [2022-07-11 23:56:24,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:24,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647760875] [2022-07-11 23:56:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:24,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:24,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647760875] [2022-07-11 23:56:24,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647760875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:24,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:24,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:24,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406079842] [2022-07-11 23:56:24,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:24,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:24,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:24,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:24,345 INFO L87 Difference]: Start difference. First operand 229 states and 371 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 23:56:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:25,181 INFO L93 Difference]: Finished difference Result 546 states and 882 transitions. [2022-07-11 23:56:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-11 23:56:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:25,183 INFO L225 Difference]: With dead ends: 546 [2022-07-11 23:56:25,183 INFO L226 Difference]: Without dead ends: 338 [2022-07-11 23:56:25,184 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 23:56:25,184 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 166 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:25,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 388 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:56:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-07-11 23:56:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 229. [2022-07-11 23:56:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6096491228070176) internal successors, (367), 228 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 23:56:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 367 transitions. [2022-07-11 23:56:25,192 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 367 transitions. Word has length 61 [2022-07-11 23:56:25,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:25,193 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 367 transitions. [2022-07-11 23:56:25,193 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 23:56:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 367 transitions. [2022-07-11 23:56:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:56:25,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:25,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:56:25,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1129853920, now seen corresponding path program 1 times [2022-07-11 23:56:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834817386] [2022-07-11 23:56:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:25,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834817386] [2022-07-11 23:56:25,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834817386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:25,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:25,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66792838] [2022-07-11 23:56:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:25,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:25,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:25,283 INFO L87 Difference]: Start difference. First operand 229 states and 367 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 23:56:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:25,899 INFO L93 Difference]: Finished difference Result 453 states and 723 transitions. [2022-07-11 23:56:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-11 23:56:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:25,901 INFO L225 Difference]: With dead ends: 453 [2022-07-11 23:56:25,901 INFO L226 Difference]: Without dead ends: 245 [2022-07-11 23:56:25,901 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 23:56:25,902 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:25,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 527 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:56:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-11 23:56:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 229. [2022-07-11 23:56:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.605263157894737) internal successors, (366), 228 states have internal predecessors, (366), 0 states have call successors, (0), 0 states 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 23:56:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 366 transitions. [2022-07-11 23:56:25,908 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 366 transitions. Word has length 61 [2022-07-11 23:56:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 366 transitions. [2022-07-11 23:56:25,908 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 23:56:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 366 transitions. [2022-07-11 23:56:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:56:25,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:25,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:25,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:56:25,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 324676919, now seen corresponding path program 1 times [2022-07-11 23:56:25,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:25,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860333336] [2022-07-11 23:56:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:25,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:25,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860333336] [2022-07-11 23:56:25,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860333336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:25,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:25,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400799407] [2022-07-11 23:56:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:25,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:25,998 INFO L87 Difference]: Start difference. First operand 229 states and 366 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 23:56:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:26,499 INFO L93 Difference]: Finished difference Result 452 states and 721 transitions. [2022-07-11 23:56:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:26,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-11 23:56:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:26,501 INFO L225 Difference]: With dead ends: 452 [2022-07-11 23:56:26,501 INFO L226 Difference]: Without dead ends: 244 [2022-07-11 23:56:26,501 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 23:56:26,502 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 19 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 529 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-11 23:56:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2022-07-11 23:56:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6008771929824561) internal successors, (365), 228 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 23:56:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 365 transitions. [2022-07-11 23:56:26,507 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 365 transitions. Word has length 61 [2022-07-11 23:56:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:26,507 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 365 transitions. [2022-07-11 23:56:26,507 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 23:56:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 365 transitions. [2022-07-11 23:56:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:56:26,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:26,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:56:26,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -624671241, now seen corresponding path program 1 times [2022-07-11 23:56:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:26,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864033421] [2022-07-11 23:56:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:26,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864033421] [2022-07-11 23:56:26,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864033421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:26,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:26,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482385695] [2022-07-11 23:56:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:26,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:26,582 INFO L87 Difference]: Start difference. First operand 229 states and 365 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 23:56:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:27,110 INFO L93 Difference]: Finished difference Result 546 states and 873 transitions. [2022-07-11 23:56:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-11 23:56:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:27,112 INFO L225 Difference]: With dead ends: 546 [2022-07-11 23:56:27,112 INFO L226 Difference]: Without dead ends: 338 [2022-07-11 23:56:27,112 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 23:56:27,113 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 159 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:27,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 388 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-07-11 23:56:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 230. [2022-07-11 23:56:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5895196506550218) internal successors, (364), 229 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 23:56:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 364 transitions. [2022-07-11 23:56:27,118 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 364 transitions. Word has length 61 [2022-07-11 23:56:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:27,118 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 364 transitions. [2022-07-11 23:56:27,118 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 23:56:27,118 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 364 transitions. [2022-07-11 23:56:27,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-11 23:56:27,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:27,119 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:56:27,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:27,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1608456996, now seen corresponding path program 1 times [2022-07-11 23:56:27,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:27,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134220328] [2022-07-11 23:56:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:27,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:27,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134220328] [2022-07-11 23:56:27,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134220328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:27,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:27,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761630221] [2022-07-11 23:56:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:27,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:27,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:27,187 INFO L87 Difference]: Start difference. First operand 230 states and 364 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 23:56:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:28,284 INFO L93 Difference]: Finished difference Result 452 states and 717 transitions. [2022-07-11 23:56:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:28,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-11 23:56:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:28,285 INFO L225 Difference]: With dead ends: 452 [2022-07-11 23:56:28,285 INFO L226 Difference]: Without dead ends: 243 [2022-07-11 23:56:28,286 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 23:56:28,286 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 22 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:28,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 533 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:56:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-11 23:56:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 230. [2022-07-11 23:56:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5851528384279476) internal successors, (363), 229 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:56:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 363 transitions. [2022-07-11 23:56:28,290 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 363 transitions. Word has length 62 [2022-07-11 23:56:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:28,291 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 363 transitions. [2022-07-11 23:56:28,291 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 23:56:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 363 transitions. [2022-07-11 23:56:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-11 23:56:28,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:28,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:28,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:56:28,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:28,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash 557952677, now seen corresponding path program 1 times [2022-07-11 23:56:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:28,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581748048] [2022-07-11 23:56:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:28,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:28,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581748048] [2022-07-11 23:56:28,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581748048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:28,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:28,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:28,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424627376] [2022-07-11 23:56:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:28,384 INFO L87 Difference]: Start difference. First operand 230 states and 363 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 23:56:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:28,877 INFO L93 Difference]: Finished difference Result 452 states and 716 transitions. [2022-07-11 23:56:28,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:28,877 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 63 [2022-07-11 23:56:28,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:28,878 INFO L225 Difference]: With dead ends: 452 [2022-07-11 23:56:28,878 INFO L226 Difference]: Without dead ends: 243 [2022-07-11 23:56:28,879 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 23:56:28,879 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 20 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:28,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 533 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:28,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-11 23:56:28,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 230. [2022-07-11 23:56:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5807860262008733) internal successors, (362), 229 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 23:56:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 362 transitions. [2022-07-11 23:56:28,883 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 362 transitions. Word has length 63 [2022-07-11 23:56:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:28,883 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 362 transitions. [2022-07-11 23:56:28,883 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 23:56:28,884 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 362 transitions. [2022-07-11 23:56:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-11 23:56:28,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:28,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:56:28,884 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:28,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1981706935, now seen corresponding path program 1 times [2022-07-11 23:56:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:28,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555835516] [2022-07-11 23:56:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555835516] [2022-07-11 23:56:28,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555835516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:28,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:28,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655798157] [2022-07-11 23:56:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:28,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:28,955 INFO L87 Difference]: Start difference. First operand 230 states and 362 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 23:56:29,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:29,993 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2022-07-11 23:56:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:29,994 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 64 [2022-07-11 23:56:29,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:29,995 INFO L225 Difference]: With dead ends: 442 [2022-07-11 23:56:29,995 INFO L226 Difference]: Without dead ends: 233 [2022-07-11 23:56:29,995 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 23:56:29,995 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 11 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:29,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 547 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:56:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-11 23:56:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2022-07-11 23:56:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.5764192139737991) internal successors, (361), 229 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 23:56:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 361 transitions. [2022-07-11 23:56:30,002 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 361 transitions. Word has length 64 [2022-07-11 23:56:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:30,002 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 361 transitions. [2022-07-11 23:56:30,003 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 23:56:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 361 transitions. [2022-07-11 23:56:30,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-11 23:56:30,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:30,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:30,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:56:30,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:30,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1581555535, now seen corresponding path program 1 times [2022-07-11 23:56:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:30,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103828234] [2022-07-11 23:56:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:30,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103828234] [2022-07-11 23:56:30,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103828234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:30,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:30,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:30,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528854173] [2022-07-11 23:56:30,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:30,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:30,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:30,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:30,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:30,083 INFO L87 Difference]: Start difference. First operand 230 states and 361 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 23:56:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:30,797 INFO L93 Difference]: Finished difference Result 479 states and 757 transitions. [2022-07-11 23:56:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:30,798 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 64 [2022-07-11 23:56:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:30,799 INFO L225 Difference]: With dead ends: 479 [2022-07-11 23:56:30,799 INFO L226 Difference]: Without dead ends: 270 [2022-07-11 23:56:30,799 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 23:56:30,800 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 31 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:30,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 551 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:56:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-11 23:56:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 252. [2022-07-11 23:56:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5776892430278884) internal successors, (396), 251 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 23:56:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 396 transitions. [2022-07-11 23:56:30,804 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 396 transitions. Word has length 64 [2022-07-11 23:56:30,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:30,805 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 396 transitions. [2022-07-11 23:56:30,805 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 23:56:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 396 transitions. [2022-07-11 23:56:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-11 23:56:30,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:30,805 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-11 23:56:30,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:56:30,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash 993655827, now seen corresponding path program 1 times [2022-07-11 23:56:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:30,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407914814] [2022-07-11 23:56:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:30,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:30,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407914814] [2022-07-11 23:56:30,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407914814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:30,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:30,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:30,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703489761] [2022-07-11 23:56:30,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:30,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:30,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:30,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:30,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:30,897 INFO L87 Difference]: Start difference. First operand 252 states and 396 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 23:56:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:31,473 INFO L93 Difference]: Finished difference Result 591 states and 937 transitions. [2022-07-11 23:56:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:31,473 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 78 [2022-07-11 23:56:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:31,474 INFO L225 Difference]: With dead ends: 591 [2022-07-11 23:56:31,474 INFO L226 Difference]: Without dead ends: 360 [2022-07-11 23:56:31,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:56:31,475 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 164 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 388 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:56:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-11 23:56:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 252. [2022-07-11 23:56:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5617529880478087) internal successors, (392), 251 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 23:56:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 392 transitions. [2022-07-11 23:56:31,480 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 392 transitions. Word has length 78 [2022-07-11 23:56:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:31,480 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 392 transitions. [2022-07-11 23:56:31,480 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 23:56:31,480 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 392 transitions. [2022-07-11 23:56:31,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-11 23:56:31,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:31,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 23:56:31,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:56:31,481 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1846780630, now seen corresponding path program 1 times [2022-07-11 23:56:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885059922] [2022-07-11 23:56:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:31,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:31,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885059922] [2022-07-11 23:56:31,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885059922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:31,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:31,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:31,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592133192] [2022-07-11 23:56:31,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:31,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:31,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:31,575 INFO L87 Difference]: Start difference. First operand 252 states and 392 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 23:56:31,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:31,968 INFO L93 Difference]: Finished difference Result 500 states and 782 transitions. [2022-07-11 23:56:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:31,969 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 78 [2022-07-11 23:56:31,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:31,970 INFO L225 Difference]: With dead ends: 500 [2022-07-11 23:56:31,970 INFO L226 Difference]: Without dead ends: 269 [2022-07-11 23:56:31,971 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 23:56:31,971 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 33 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:31,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 553 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:56:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-11 23:56:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2022-07-11 23:56:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5577689243027888) internal successors, (391), 251 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 391 transitions. [2022-07-11 23:56:31,976 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 391 transitions. Word has length 78 [2022-07-11 23:56:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:31,976 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 391 transitions. [2022-07-11 23:56:31,977 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 23:56:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 391 transitions. [2022-07-11 23:56:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-11 23:56:31,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:31,977 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:56:31,977 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1282217583, now seen corresponding path program 1 times [2022-07-11 23:56:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:31,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211703512] [2022-07-11 23:56:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:32,066 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 23:56:32,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:32,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211703512] [2022-07-11 23:56:32,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211703512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:32,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:32,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645783481] [2022-07-11 23:56:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:32,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:32,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:32,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:32,068 INFO L87 Difference]: Start difference. First operand 252 states and 391 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:33,106 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 23:56:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:33,386 INFO L93 Difference]: Finished difference Result 591 states and 927 transitions. [2022-07-11 23:56:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:33,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-11 23:56:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:33,388 INFO L225 Difference]: With dead ends: 591 [2022-07-11 23:56:33,388 INFO L226 Difference]: Without dead ends: 360 [2022-07-11 23:56:33,389 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 23:56:33,389 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 162 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:33,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 388 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:56:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-11 23:56:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 252. [2022-07-11 23:56:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5418326693227091) internal successors, (387), 251 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 23:56:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 387 transitions. [2022-07-11 23:56:33,394 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 387 transitions. Word has length 79 [2022-07-11 23:56:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:33,394 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 387 transitions. [2022-07-11 23:56:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 387 transitions. [2022-07-11 23:56:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-11 23:56:33,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:33,395 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-11 23:56:33,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1141353944, now seen corresponding path program 1 times [2022-07-11 23:56:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638679650] [2022-07-11 23:56:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:33,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:33,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638679650] [2022-07-11 23:56:33,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638679650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:33,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:33,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357177112] [2022-07-11 23:56:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:33,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:33,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:33,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:33,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:33,489 INFO L87 Difference]: Start difference. First operand 252 states and 387 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:34,694 INFO L93 Difference]: Finished difference Result 591 states and 919 transitions. [2022-07-11 23:56:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:34,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-07-11 23:56:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:34,696 INFO L225 Difference]: With dead ends: 591 [2022-07-11 23:56:34,696 INFO L226 Difference]: Without dead ends: 360 [2022-07-11 23:56:34,696 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 23:56:34,697 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 160 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:34,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 388 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:56:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-11 23:56:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 252. [2022-07-11 23:56:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 251 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 23:56:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 383 transitions. [2022-07-11 23:56:34,701 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 383 transitions. Word has length 80 [2022-07-11 23:56:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:34,701 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 383 transitions. [2022-07-11 23:56:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 383 transitions. [2022-07-11 23:56:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-11 23:56:34,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:34,702 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:34,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-11 23:56:34,702 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1076136842, now seen corresponding path program 1 times [2022-07-11 23:56:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:34,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815652280] [2022-07-11 23:56:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:34,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:56:34,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:34,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815652280] [2022-07-11 23:56:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815652280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:34,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:34,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:34,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51563680] [2022-07-11 23:56:34,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:34,778 INFO L87 Difference]: Start difference. First operand 252 states and 383 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:35,326 INFO L93 Difference]: Finished difference Result 581 states and 898 transitions. [2022-07-11 23:56:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-11 23:56:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:35,328 INFO L225 Difference]: With dead ends: 581 [2022-07-11 23:56:35,328 INFO L226 Difference]: Without dead ends: 350 [2022-07-11 23:56:35,328 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 23:56:35,328 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 151 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:35,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 408 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-11 23:56:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 252. [2022-07-11 23:56:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5099601593625498) internal successors, (379), 251 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 23:56:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 379 transitions. [2022-07-11 23:56:35,333 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 379 transitions. Word has length 81 [2022-07-11 23:56:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:35,333 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 379 transitions. [2022-07-11 23:56:35,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 379 transitions. [2022-07-11 23:56:35,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-11 23:56:35,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:35,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:35,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-11 23:56:35,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:35,334 INFO L85 PathProgramCache]: Analyzing trace with hash -226348903, now seen corresponding path program 1 times [2022-07-11 23:56:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:35,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329733748] [2022-07-11 23:56:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:35,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:56:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329733748] [2022-07-11 23:56:35,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329733748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:35,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:35,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:35,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442649347] [2022-07-11 23:56:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:35,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:35,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:35,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:35,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:35,432 INFO L87 Difference]: Start difference. First operand 252 states and 379 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:36,115 INFO L93 Difference]: Finished difference Result 581 states and 890 transitions. [2022-07-11 23:56:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:36,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 86 [2022-07-11 23:56:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:36,116 INFO L225 Difference]: With dead ends: 581 [2022-07-11 23:56:36,116 INFO L226 Difference]: Without dead ends: 350 [2022-07-11 23:56:36,117 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 23:56:36,117 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 125 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:36,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 434 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:56:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-11 23:56:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 275. [2022-07-11 23:56:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.5474452554744527) internal successors, (424), 274 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 23:56:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 424 transitions. [2022-07-11 23:56:36,122 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 424 transitions. Word has length 86 [2022-07-11 23:56:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:36,122 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 424 transitions. [2022-07-11 23:56:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 23:56:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 424 transitions. [2022-07-11 23:56:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-11 23:56:36,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:36,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-11 23:56:36,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:36,124 INFO L85 PathProgramCache]: Analyzing trace with hash 437102048, now seen corresponding path program 1 times [2022-07-11 23:56:36,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:36,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399706990] [2022-07-11 23:56:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:56:36,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:36,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399706990] [2022-07-11 23:56:36,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399706990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:36,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:36,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054782517] [2022-07-11 23:56:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:36,197 INFO L87 Difference]: Start difference. First operand 275 states and 424 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 23:56:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:36,706 INFO L93 Difference]: Finished difference Result 618 states and 960 transitions. [2022-07-11 23:56:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:36,707 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 114 [2022-07-11 23:56:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:36,708 INFO L225 Difference]: With dead ends: 618 [2022-07-11 23:56:36,708 INFO L226 Difference]: Without dead ends: 364 [2022-07-11 23:56:36,708 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 23:56:36,709 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 88 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:36,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 529 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-07-11 23:56:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 309. [2022-07-11 23:56:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5487012987012987) internal successors, (477), 308 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 23:56:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 477 transitions. [2022-07-11 23:56:36,714 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 477 transitions. Word has length 114 [2022-07-11 23:56:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:36,714 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 477 transitions. [2022-07-11 23:56:36,714 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 23:56:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 477 transitions. [2022-07-11 23:56:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-11 23:56:36,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:36,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:36,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-11 23:56:36,716 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash -530248606, now seen corresponding path program 1 times [2022-07-11 23:56:36,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:36,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084002831] [2022-07-11 23:56:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:36,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:56:36,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:36,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084002831] [2022-07-11 23:56:36,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084002831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:36,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:36,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:36,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902505519] [2022-07-11 23:56:36,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:36,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:36,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:36,799 INFO L87 Difference]: Start difference. First operand 309 states and 477 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 23:56:37,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:37,558 INFO L93 Difference]: Finished difference Result 748 states and 1168 transitions. [2022-07-11 23:56:37,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:37,559 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 114 [2022-07-11 23:56:37,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:37,560 INFO L225 Difference]: With dead ends: 748 [2022-07-11 23:56:37,560 INFO L226 Difference]: Without dead ends: 460 [2022-07-11 23:56:37,561 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 23:56:37,561 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 131 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:37,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 418 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:56:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-11 23:56:37,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 339. [2022-07-11 23:56:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.5562130177514792) internal successors, (526), 338 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 23:56:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 526 transitions. [2022-07-11 23:56:37,567 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 526 transitions. Word has length 114 [2022-07-11 23:56:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:37,567 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 526 transitions. [2022-07-11 23:56:37,568 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 23:56:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 526 transitions. [2022-07-11 23:56:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-11 23:56:37,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:37,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-11 23:56:37,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 766254903, now seen corresponding path program 1 times [2022-07-11 23:56:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:37,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78358940] [2022-07-11 23:56:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:56:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:37,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78358940] [2022-07-11 23:56:37,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78358940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:37,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:37,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253701401] [2022-07-11 23:56:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:37,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:37,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:37,653 INFO L87 Difference]: Start difference. First operand 339 states and 526 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 23:56:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:38,235 INFO L93 Difference]: Finished difference Result 772 states and 1203 transitions. [2022-07-11 23:56:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:38,235 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 120 [2022-07-11 23:56:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:38,237 INFO L225 Difference]: With dead ends: 772 [2022-07-11 23:56:38,237 INFO L226 Difference]: Without dead ends: 454 [2022-07-11 23:56:38,237 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 23:56:38,238 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 127 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:38,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 406 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:56:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-11 23:56:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 376. [2022-07-11 23:56:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.56) internal successors, (585), 375 states have internal predecessors, (585), 0 states have call successors, (0), 0 states 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 23:56:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 585 transitions. [2022-07-11 23:56:38,243 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 585 transitions. Word has length 120 [2022-07-11 23:56:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:38,244 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 585 transitions. [2022-07-11 23:56:38,244 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 23:56:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 585 transitions. [2022-07-11 23:56:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-11 23:56:38,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:38,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:38,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-11 23:56:38,245 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 183105856, now seen corresponding path program 1 times [2022-07-11 23:56:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:38,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105678702] [2022-07-11 23:56:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:38,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:56:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105678702] [2022-07-11 23:56:38,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105678702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:38,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:38,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042481126] [2022-07-11 23:56:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:38,333 INFO L87 Difference]: Start difference. First operand 376 states and 585 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:56:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:38,866 INFO L93 Difference]: Finished difference Result 817 states and 1276 transitions. [2022-07-11 23:56:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:38,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 121 [2022-07-11 23:56:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:38,868 INFO L225 Difference]: With dead ends: 817 [2022-07-11 23:56:38,868 INFO L226 Difference]: Without dead ends: 462 [2022-07-11 23:56:38,868 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 23:56:38,869 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 77 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:38,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 531 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:38,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-11 23:56:38,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 416. [2022-07-11 23:56:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 1.5614457831325301) internal successors, (648), 415 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 23:56:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 648 transitions. [2022-07-11 23:56:38,876 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 648 transitions. Word has length 121 [2022-07-11 23:56:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:38,876 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 648 transitions. [2022-07-11 23:56:38,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 23:56:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 648 transitions. [2022-07-11 23:56:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-11 23:56:38,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:38,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-11 23:56:38,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1022139518, now seen corresponding path program 1 times [2022-07-11 23:56:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:38,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013735455] [2022-07-11 23:56:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-11 23:56:38,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:38,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013735455] [2022-07-11 23:56:38,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013735455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:38,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:38,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:38,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10332732] [2022-07-11 23:56:38,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:38,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:38,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:38,954 INFO L87 Difference]: Start difference. First operand 416 states and 648 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:39,477 INFO L93 Difference]: Finished difference Result 848 states and 1325 transitions. [2022-07-11 23:56:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-07-11 23:56:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:39,479 INFO L225 Difference]: With dead ends: 848 [2022-07-11 23:56:39,479 INFO L226 Difference]: Without dead ends: 453 [2022-07-11 23:56:39,479 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 23:56:39,480 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 28 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:39,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 631 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-07-11 23:56:39,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 440. [2022-07-11 23:56:39,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.5558086560364466) internal successors, (683), 439 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 23:56:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 683 transitions. [2022-07-11 23:56:39,486 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 683 transitions. Word has length 121 [2022-07-11 23:56:39,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:39,486 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 683 transitions. [2022-07-11 23:56:39,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 683 transitions. [2022-07-11 23:56:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-11 23:56:39,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:39,488 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, 1] [2022-07-11 23:56:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-11 23:56:39,488 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -808576153, now seen corresponding path program 1 times [2022-07-11 23:56:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022499651] [2022-07-11 23:56:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:39,575 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 23:56:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:39,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022499651] [2022-07-11 23:56:39,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022499651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:39,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:39,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:39,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617934463] [2022-07-11 23:56:39,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:39,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:39,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:39,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:39,578 INFO L87 Difference]: Start difference. First operand 440 states and 683 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 23:56:40,603 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 23:56:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:40,804 INFO L93 Difference]: Finished difference Result 897 states and 1395 transitions. [2022-07-11 23:56:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:40,805 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 23:56:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:40,806 INFO L225 Difference]: With dead ends: 897 [2022-07-11 23:56:40,806 INFO L226 Difference]: Without dead ends: 478 [2022-07-11 23:56:40,807 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 23:56:40,807 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 61 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 537 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:56:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-07-11 23:56:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 443. [2022-07-11 23:56:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5520361990950227) internal successors, (686), 442 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 686 transitions. [2022-07-11 23:56:40,813 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 686 transitions. Word has length 128 [2022-07-11 23:56:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:40,814 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 686 transitions. [2022-07-11 23:56:40,814 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 23:56:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 686 transitions. [2022-07-11 23:56:40,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-11 23:56:40,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:40,815 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:40,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-11 23:56:40,815 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1942673447, now seen corresponding path program 1 times [2022-07-11 23:56:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:40,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239380236] [2022-07-11 23:56:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:56:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:40,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239380236] [2022-07-11 23:56:40,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239380236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:40,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:40,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:40,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847146446] [2022-07-11 23:56:40,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:40,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:40,888 INFO L87 Difference]: Start difference. First operand 443 states and 686 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:41,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:41,252 INFO L93 Difference]: Finished difference Result 899 states and 1396 transitions. [2022-07-11 23:56:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-07-11 23:56:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:41,253 INFO L225 Difference]: With dead ends: 899 [2022-07-11 23:56:41,253 INFO L226 Difference]: Without dead ends: 477 [2022-07-11 23:56:41,254 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 23:56:41,254 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 83 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 539 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:56:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-11 23:56:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 443. [2022-07-11 23:56:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5497737556561086) internal successors, (685), 442 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 685 transitions. [2022-07-11 23:56:41,260 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 685 transitions. Word has length 135 [2022-07-11 23:56:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:41,261 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 685 transitions. [2022-07-11 23:56:41,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:41,261 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 685 transitions. [2022-07-11 23:56:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-11 23:56:41,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:41,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:41,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-11 23:56:41,262 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1914173157, now seen corresponding path program 1 times [2022-07-11 23:56:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42095374] [2022-07-11 23:56:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:56:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:41,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42095374] [2022-07-11 23:56:41,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42095374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:41,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:41,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:41,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148796906] [2022-07-11 23:56:41,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:41,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:41,336 INFO L87 Difference]: Start difference. First operand 443 states and 685 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:41,795 INFO L93 Difference]: Finished difference Result 877 states and 1362 transitions. [2022-07-11 23:56:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-07-11 23:56:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:41,796 INFO L225 Difference]: With dead ends: 877 [2022-07-11 23:56:41,797 INFO L226 Difference]: Without dead ends: 455 [2022-07-11 23:56:41,797 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 23:56:41,798 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 33 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:41,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 631 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:56:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-07-11 23:56:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 443. [2022-07-11 23:56:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5475113122171946) internal successors, (684), 442 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 23:56:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 684 transitions. [2022-07-11 23:56:41,804 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 684 transitions. Word has length 135 [2022-07-11 23:56:41,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:41,804 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 684 transitions. [2022-07-11 23:56:41,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 684 transitions. [2022-07-11 23:56:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-11 23:56:41,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:41,805 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, 1] [2022-07-11 23:56:41,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-11 23:56:41,805 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1862166372, now seen corresponding path program 1 times [2022-07-11 23:56:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:41,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074857716] [2022-07-11 23:56:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:41,878 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 23:56:41,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:41,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074857716] [2022-07-11 23:56:41,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074857716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:41,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:41,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:41,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38185419] [2022-07-11 23:56:41,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:41,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:41,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:41,880 INFO L87 Difference]: Start difference. First operand 443 states and 684 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 23:56:42,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:42,416 INFO L93 Difference]: Finished difference Result 980 states and 1518 transitions. [2022-07-11 23:56:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:42,416 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 23:56:42,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:42,417 INFO L225 Difference]: With dead ends: 980 [2022-07-11 23:56:42,418 INFO L226 Difference]: Without dead ends: 558 [2022-07-11 23:56:42,418 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 23:56:42,418 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 134 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:42,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 434 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:42,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-11 23:56:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 473. [2022-07-11 23:56:42,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5381355932203389) internal successors, (726), 472 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 23:56:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 726 transitions. [2022-07-11 23:56:42,429 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 726 transitions. Word has length 141 [2022-07-11 23:56:42,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:42,429 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 726 transitions. [2022-07-11 23:56:42,429 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 23:56:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 726 transitions. [2022-07-11 23:56:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-11 23:56:42,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:42,431 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, 1] [2022-07-11 23:56:42,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-11 23:56:42,431 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:42,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1844194602, now seen corresponding path program 1 times [2022-07-11 23:56:42,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:42,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079912772] [2022-07-11 23:56:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:42,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:42,507 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 23:56:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:42,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079912772] [2022-07-11 23:56:42,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079912772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:42,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:42,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:42,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096505216] [2022-07-11 23:56:42,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:42,509 INFO L87 Difference]: Start difference. First operand 473 states and 726 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:42,905 INFO L93 Difference]: Finished difference Result 1000 states and 1538 transitions. [2022-07-11 23:56:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-11 23:56:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:42,907 INFO L225 Difference]: With dead ends: 1000 [2022-07-11 23:56:42,907 INFO L226 Difference]: Without dead ends: 548 [2022-07-11 23:56:42,907 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 23:56:42,908 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 133 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:42,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 406 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:56:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-11 23:56:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 473. [2022-07-11 23:56:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5254237288135593) internal successors, (720), 472 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 720 transitions. [2022-07-11 23:56:42,914 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 720 transitions. Word has length 142 [2022-07-11 23:56:42,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:42,914 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 720 transitions. [2022-07-11 23:56:42,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 720 transitions. [2022-07-11 23:56:42,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:56:42,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:42,917 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:42,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-11 23:56:42,917 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:42,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:42,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2025405034, now seen corresponding path program 1 times [2022-07-11 23:56:42,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:42,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376096944] [2022-07-11 23:56:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:42,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:56:43,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:43,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376096944] [2022-07-11 23:56:43,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376096944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:43,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:43,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831601509] [2022-07-11 23:56:43,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:43,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:43,025 INFO L87 Difference]: Start difference. First operand 473 states and 720 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 23:56:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:43,680 INFO L93 Difference]: Finished difference Result 957 states and 1462 transitions. [2022-07-11 23:56:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 23:56:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:43,681 INFO L225 Difference]: With dead ends: 957 [2022-07-11 23:56:43,681 INFO L226 Difference]: Without dead ends: 505 [2022-07-11 23:56:43,686 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 23:56:43,686 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 73 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:43,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 557 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:56:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-07-11 23:56:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 473. [2022-07-11 23:56:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5233050847457628) internal successors, (719), 472 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 719 transitions. [2022-07-11 23:56:43,693 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 719 transitions. Word has length 143 [2022-07-11 23:56:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:43,693 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 719 transitions. [2022-07-11 23:56:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 23:56:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 719 transitions. [2022-07-11 23:56:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:56:43,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:43,695 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:43,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-11 23:56:43,695 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -372065496, now seen corresponding path program 1 times [2022-07-11 23:56:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:43,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056765966] [2022-07-11 23:56:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:43,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-11 23:56:43,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:43,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056765966] [2022-07-11 23:56:43,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056765966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:43,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:43,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525512444] [2022-07-11 23:56:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:43,770 INFO L87 Difference]: Start difference. First operand 473 states and 719 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 23:56:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:43,827 INFO L93 Difference]: Finished difference Result 1374 states and 2105 transitions. [2022-07-11 23:56:43,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:43,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 23:56:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:43,830 INFO L225 Difference]: With dead ends: 1374 [2022-07-11 23:56:43,831 INFO L226 Difference]: Without dead ends: 922 [2022-07-11 23:56:43,831 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 23:56:43,832 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 151 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:43,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 443 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-07-11 23:56:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2022-07-11 23:56:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.511400651465798) internal successors, (1392), 921 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 23:56:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1392 transitions. [2022-07-11 23:56:43,843 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1392 transitions. Word has length 143 [2022-07-11 23:56:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:43,844 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1392 transitions. [2022-07-11 23:56:43,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 23:56:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1392 transitions. [2022-07-11 23:56:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:56:43,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:43,846 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-11 23:56:43,846 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2056193126, now seen corresponding path program 1 times [2022-07-11 23:56:43,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:43,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028675802] [2022-07-11 23:56:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-11 23:56:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028675802] [2022-07-11 23:56:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028675802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:43,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:43,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036669231] [2022-07-11 23:56:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:43,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:43,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:43,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:43,933 INFO L87 Difference]: Start difference. First operand 922 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:43,965 INFO L93 Difference]: Finished difference Result 1850 states and 2796 transitions. [2022-07-11 23:56:43,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-07-11 23:56:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:43,968 INFO L225 Difference]: With dead ends: 1850 [2022-07-11 23:56:43,968 INFO L226 Difference]: Without dead ends: 949 [2022-07-11 23:56:43,969 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 23:56:43,970 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:43,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 428 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-07-11 23:56:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-07-11 23:56:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.5052742616033756) internal successors, (1427), 948 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states 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 23:56:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1427 transitions. [2022-07-11 23:56:43,983 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1427 transitions. Word has length 143 [2022-07-11 23:56:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:43,983 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1427 transitions. [2022-07-11 23:56:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1427 transitions. [2022-07-11 23:56:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:56:43,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:43,985 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:43,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-11 23:56:43,985 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:43,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 5784228, now seen corresponding path program 1 times [2022-07-11 23:56:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241908019] [2022-07-11 23:56:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:43,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-11 23:56:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:44,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241908019] [2022-07-11 23:56:44,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241908019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:44,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:44,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712780871] [2022-07-11 23:56:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:44,046 INFO L87 Difference]: Start difference. First operand 949 states and 1427 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:56:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:44,075 INFO L93 Difference]: Finished difference Result 1879 states and 2832 transitions. [2022-07-11 23:56:44,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:44,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 23:56:44,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:44,078 INFO L225 Difference]: With dead ends: 1879 [2022-07-11 23:56:44,078 INFO L226 Difference]: Without dead ends: 951 [2022-07-11 23:56:44,079 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 23:56:44,079 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:44,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 407 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-07-11 23:56:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 951. [2022-07-11 23:56:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 950 states have (on average 1.5042105263157894) internal successors, (1429), 950 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states 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 23:56:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1429 transitions. [2022-07-11 23:56:44,092 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1429 transitions. Word has length 143 [2022-07-11 23:56:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:44,092 INFO L495 AbstractCegarLoop]: Abstraction has 951 states and 1429 transitions. [2022-07-11 23:56:44,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 23:56:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1429 transitions. [2022-07-11 23:56:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-11 23:56:44,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:44,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:44,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-11 23:56:44,096 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2075454910, now seen corresponding path program 1 times [2022-07-11 23:56:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:44,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530161331] [2022-07-11 23:56:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:56:44,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:44,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530161331] [2022-07-11 23:56:44,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530161331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:44,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:44,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:44,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891710221] [2022-07-11 23:56:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:44,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:44,188 INFO L87 Difference]: Start difference. First operand 951 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:44,240 INFO L93 Difference]: Finished difference Result 2328 states and 3523 transitions. [2022-07-11 23:56:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:44,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-07-11 23:56:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:44,244 INFO L225 Difference]: With dead ends: 2328 [2022-07-11 23:56:44,244 INFO L226 Difference]: Without dead ends: 1400 [2022-07-11 23:56:44,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:44,246 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 156 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:44,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 588 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:44,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-07-11 23:56:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2022-07-11 23:56:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 1.5025017869907076) internal successors, (2102), 1399 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states 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 23:56:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2102 transitions. [2022-07-11 23:56:44,267 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2102 transitions. Word has length 145 [2022-07-11 23:56:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:44,267 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 2102 transitions. [2022-07-11 23:56:44,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2102 transitions. [2022-07-11 23:56:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-11 23:56:44,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:44,270 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:44,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-11 23:56:44,270 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1084473730, now seen corresponding path program 1 times [2022-07-11 23:56:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:44,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361248829] [2022-07-11 23:56:44,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:44,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-11 23:56:44,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:44,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361248829] [2022-07-11 23:56:44,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361248829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:44,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:44,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:44,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583521259] [2022-07-11 23:56:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:44,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:44,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:44,355 INFO L87 Difference]: Start difference. First operand 1400 states and 2102 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 23:56:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:44,845 INFO L93 Difference]: Finished difference Result 2930 states and 4405 transitions. [2022-07-11 23:56:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 174 [2022-07-11 23:56:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:44,849 INFO L225 Difference]: With dead ends: 2930 [2022-07-11 23:56:44,849 INFO L226 Difference]: Without dead ends: 1553 [2022-07-11 23:56:44,851 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 23:56:44,851 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 42 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:44,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 647 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:44,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2022-07-11 23:56:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1484. [2022-07-11 23:56:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 1.5043830074173972) internal successors, (2231), 1483 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states 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 23:56:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2231 transitions. [2022-07-11 23:56:44,875 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2231 transitions. Word has length 174 [2022-07-11 23:56:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:44,875 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 2231 transitions. [2022-07-11 23:56:44,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 23:56:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2231 transitions. [2022-07-11 23:56:44,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-11 23:56:44,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:44,878 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:44,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-11 23:56:44,878 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1196950761, now seen corresponding path program 1 times [2022-07-11 23:56:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:44,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832056970] [2022-07-11 23:56:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:44,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-11 23:56:44,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:44,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832056970] [2022-07-11 23:56:44,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832056970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:44,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:44,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819113601] [2022-07-11 23:56:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:44,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:44,977 INFO L87 Difference]: Start difference. First operand 1484 states and 2231 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 23:56:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:45,541 INFO L93 Difference]: Finished difference Result 3162 states and 4730 transitions. [2022-07-11 23:56:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:45,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 188 [2022-07-11 23:56:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:45,548 INFO L225 Difference]: With dead ends: 3162 [2022-07-11 23:56:45,548 INFO L226 Difference]: Without dead ends: 1701 [2022-07-11 23:56:45,550 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 23:56:45,550 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 145 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:45,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 408 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:56:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-11 23:56:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1484. [2022-07-11 23:56:45,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 1.4902225219150371) internal successors, (2210), 1483 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states 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 23:56:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 2210 transitions. [2022-07-11 23:56:45,569 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 2210 transitions. Word has length 188 [2022-07-11 23:56:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:45,569 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 2210 transitions. [2022-07-11 23:56:45,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 23:56:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 2210 transitions. [2022-07-11 23:56:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-11 23:56:45,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:45,572 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2022-07-11 23:56:45,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-11 23:56:45,572 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1909029588, now seen corresponding path program 1 times [2022-07-11 23:56:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:45,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098628548] [2022-07-11 23:56:45,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:45,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 252 proven. 38 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-11 23:56:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:45,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098628548] [2022-07-11 23:56:45,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098628548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:56:45,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962299737] [2022-07-11 23:56:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:45,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:56:45,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:56:45,751 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 23:56:45,754 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 23:56:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:56:46,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:56:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-11 23:56:46,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:56:46,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962299737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:46,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:56:46,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 23:56:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525751544] [2022-07-11 23:56:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:46,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:46,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:46,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:56:46,498 INFO L87 Difference]: Start difference. First operand 1484 states and 2210 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 23:56:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:46,630 INFO L93 Difference]: Finished difference Result 3423 states and 5122 transitions. [2022-07-11 23:56:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:46,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 196 [2022-07-11 23:56:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:46,635 INFO L225 Difference]: With dead ends: 3423 [2022-07-11 23:56:46,636 INFO L226 Difference]: Without dead ends: 1962 [2022-07-11 23:56:46,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 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 23:56:46,637 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 163 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:46,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 384 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:56:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-07-11 23:56:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1962. [2022-07-11 23:56:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.4915859255481898) internal successors, (2925), 1961 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states 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 23:56:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2925 transitions. [2022-07-11 23:56:46,664 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2925 transitions. Word has length 196 [2022-07-11 23:56:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:46,685 INFO L495 AbstractCegarLoop]: Abstraction has 1962 states and 2925 transitions. [2022-07-11 23:56:46,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 23:56:46,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2925 transitions. [2022-07-11 23:56:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-11 23:56:46,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:46,688 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:46,710 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 23:56:46,888 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,SelfDestructingSolverStorable34 [2022-07-11 23:56:46,888 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:46,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash -489247903, now seen corresponding path program 1 times [2022-07-11 23:56:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:46,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206903285] [2022-07-11 23:56:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-11 23:56:46,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:46,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206903285] [2022-07-11 23:56:46,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206903285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:46,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:46,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956982582] [2022-07-11 23:56:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:46,988 INFO L87 Difference]: Start difference. First operand 1962 states and 2925 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 23:56:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:47,058 INFO L93 Difference]: Finished difference Result 4379 states and 6552 transitions. [2022-07-11 23:56:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 198 [2022-07-11 23:56:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:47,064 INFO L225 Difference]: With dead ends: 4379 [2022-07-11 23:56:47,064 INFO L226 Difference]: Without dead ends: 2440 [2022-07-11 23:56:47,066 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 23:56:47,066 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:47,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 383 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2022-07-11 23:56:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2440. [2022-07-11 23:56:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2439 states have (on average 1.4928249282492825) internal successors, (3641), 2439 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states 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 23:56:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3641 transitions. [2022-07-11 23:56:47,100 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3641 transitions. Word has length 198 [2022-07-11 23:56:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:47,100 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 3641 transitions. [2022-07-11 23:56:47,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 23:56:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3641 transitions. [2022-07-11 23:56:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-11 23:56:47,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:47,104 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-11 23:56:47,105 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1545883921, now seen corresponding path program 1 times [2022-07-11 23:56:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979240432] [2022-07-11 23:56:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-11 23:56:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979240432] [2022-07-11 23:56:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979240432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:47,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:47,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:47,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751729297] [2022-07-11 23:56:47,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:47,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:47,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:47,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:47,240 INFO L87 Difference]: Start difference. First operand 2440 states and 3641 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:47,318 INFO L93 Difference]: Finished difference Result 5335 states and 7984 transitions. [2022-07-11 23:56:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-07-11 23:56:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:47,330 INFO L225 Difference]: With dead ends: 5335 [2022-07-11 23:56:47,330 INFO L226 Difference]: Without dead ends: 2918 [2022-07-11 23:56:47,332 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 23:56:47,332 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 167 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:47,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 382 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2022-07-11 23:56:47,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2918. [2022-07-11 23:56:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2917 states have (on average 1.4940006856359274) internal successors, (4358), 2917 states have internal predecessors, (4358), 0 states have call successors, (0), 0 states 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 23:56:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 4358 transitions. [2022-07-11 23:56:47,374 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 4358 transitions. Word has length 237 [2022-07-11 23:56:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:47,374 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 4358 transitions. [2022-07-11 23:56:47,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 4358 transitions. [2022-07-11 23:56:47,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-11 23:56:47,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:47,378 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:47,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-11 23:56:47,379 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1779514151, now seen corresponding path program 1 times [2022-07-11 23:56:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:47,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764668857] [2022-07-11 23:56:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-11 23:56:47,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:47,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764668857] [2022-07-11 23:56:47,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764668857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:47,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:47,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99414963] [2022-07-11 23:56:47,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:47,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:47,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:47,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:47,496 INFO L87 Difference]: Start difference. First operand 2918 states and 4358 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:47,576 INFO L93 Difference]: Finished difference Result 6291 states and 9418 transitions. [2022-07-11 23:56:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:47,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-07-11 23:56:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:47,582 INFO L225 Difference]: With dead ends: 6291 [2022-07-11 23:56:47,582 INFO L226 Difference]: Without dead ends: 3396 [2022-07-11 23:56:47,585 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 23:56:47,585 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 168 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:47,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 381 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2022-07-11 23:56:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3396. [2022-07-11 23:56:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 1.495139911634757) internal successors, (5076), 3395 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states 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 23:56:47,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5076 transitions. [2022-07-11 23:56:47,634 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5076 transitions. Word has length 239 [2022-07-11 23:56:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:47,635 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 5076 transitions. [2022-07-11 23:56:47,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5076 transitions. [2022-07-11 23:56:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-11 23:56:47,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:47,640 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:47,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-11 23:56:47,640 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 29939523, now seen corresponding path program 1 times [2022-07-11 23:56:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:47,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975850434] [2022-07-11 23:56:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:47,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-07-11 23:56:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:47,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975850434] [2022-07-11 23:56:47,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975850434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:47,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:47,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521867197] [2022-07-11 23:56:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:47,809 INFO L87 Difference]: Start difference. First operand 3396 states and 5076 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:47,890 INFO L93 Difference]: Finished difference Result 7240 states and 10843 transitions. [2022-07-11 23:56:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2022-07-11 23:56:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:47,909 INFO L225 Difference]: With dead ends: 7240 [2022-07-11 23:56:47,909 INFO L226 Difference]: Without dead ends: 3867 [2022-07-11 23:56:47,912 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 23:56:47,913 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:47,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 587 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2022-07-11 23:56:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3867. [2022-07-11 23:56:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3867 states, 3866 states have (on average 1.494568028970512) internal successors, (5778), 3866 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states 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 23:56:47,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3867 states to 3867 states and 5778 transitions. [2022-07-11 23:56:47,967 INFO L78 Accepts]: Start accepts. Automaton has 3867 states and 5778 transitions. Word has length 271 [2022-07-11 23:56:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:47,968 INFO L495 AbstractCegarLoop]: Abstraction has 3867 states and 5778 transitions. [2022-07-11 23:56:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:47,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3867 states and 5778 transitions. [2022-07-11 23:56:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-11 23:56:47,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:47,973 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:47,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-11 23:56:47,974 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:47,974 INFO L85 PathProgramCache]: Analyzing trace with hash 278086017, now seen corresponding path program 1 times [2022-07-11 23:56:47,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:47,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653273134] [2022-07-11 23:56:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-11 23:56:48,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:48,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653273134] [2022-07-11 23:56:48,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653273134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:48,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:48,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779002945] [2022-07-11 23:56:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:48,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:48,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:48,109 INFO L87 Difference]: Start difference. First operand 3867 states and 5778 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:48,191 INFO L93 Difference]: Finished difference Result 8156 states and 12209 transitions. [2022-07-11 23:56:48,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:48,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 271 [2022-07-11 23:56:48,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:48,198 INFO L225 Difference]: With dead ends: 8156 [2022-07-11 23:56:48,198 INFO L226 Difference]: Without dead ends: 4312 [2022-07-11 23:56:48,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:48,202 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 158 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:48,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 590 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-07-11 23:56:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4312. [2022-07-11 23:56:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4311 states have (on average 1.4936209696126188) internal successors, (6439), 4311 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states 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 23:56:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6439 transitions. [2022-07-11 23:56:48,261 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6439 transitions. Word has length 271 [2022-07-11 23:56:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:48,261 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 6439 transitions. [2022-07-11 23:56:48,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6439 transitions. [2022-07-11 23:56:48,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-07-11 23:56:48,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:48,268 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:48,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-11 23:56:48,268 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:48,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:48,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1434461779, now seen corresponding path program 1 times [2022-07-11 23:56:48,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:48,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8063771] [2022-07-11 23:56:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-07-11 23:56:48,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:48,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8063771] [2022-07-11 23:56:48,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8063771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:48,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:48,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333293272] [2022-07-11 23:56:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:48,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:48,413 INFO L87 Difference]: Start difference. First operand 4312 states and 6439 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 23:56:48,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:48,502 INFO L93 Difference]: Finished difference Result 9079 states and 13580 transitions. [2022-07-11 23:56:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:48,503 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 346 [2022-07-11 23:56:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:48,510 INFO L225 Difference]: With dead ends: 9079 [2022-07-11 23:56:48,510 INFO L226 Difference]: Without dead ends: 4790 [2022-07-11 23:56:48,514 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 23:56:48,515 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 158 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:48,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 378 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2022-07-11 23:56:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4790. [2022-07-11 23:56:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 4789 states have (on average 1.4950929212779285) internal successors, (7160), 4789 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states 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 23:56:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7160 transitions. [2022-07-11 23:56:48,581 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7160 transitions. Word has length 346 [2022-07-11 23:56:48,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:48,581 INFO L495 AbstractCegarLoop]: Abstraction has 4790 states and 7160 transitions. [2022-07-11 23:56:48,581 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 23:56:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7160 transitions. [2022-07-11 23:56:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-07-11 23:56:48,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:48,588 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-11 23:56:48,588 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1169005770, now seen corresponding path program 1 times [2022-07-11 23:56:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:48,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524441651] [2022-07-11 23:56:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-07-11 23:56:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:48,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524441651] [2022-07-11 23:56:48,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524441651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:48,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:48,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103016734] [2022-07-11 23:56:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:48,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:48,760 INFO L87 Difference]: Start difference. First operand 4790 states and 7160 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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 23:56:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:48,863 INFO L93 Difference]: Finished difference Result 10035 states and 15022 transitions. [2022-07-11 23:56:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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 387 [2022-07-11 23:56:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:48,872 INFO L225 Difference]: With dead ends: 10035 [2022-07-11 23:56:48,872 INFO L226 Difference]: Without dead ends: 5268 [2022-07-11 23:56:48,877 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 23:56:48,879 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 159 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:48,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 377 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:56:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-07-11 23:56:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5268. [2022-07-11 23:56:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 1.496487564078223) internal successors, (7882), 5267 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states 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 23:56:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 7882 transitions. [2022-07-11 23:56:48,984 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 7882 transitions. Word has length 387 [2022-07-11 23:56:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 5268 states and 7882 transitions. [2022-07-11 23:56:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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 23:56:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 7882 transitions. [2022-07-11 23:56:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-07-11 23:56:48,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:48,993 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:48,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-11 23:56:48,993 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:48,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -477358949, now seen corresponding path program 1 times [2022-07-11 23:56:48,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:48,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352408102] [2022-07-11 23:56:48,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:48,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-07-11 23:56:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352408102] [2022-07-11 23:56:49,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352408102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:49,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:49,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074843428] [2022-07-11 23:56:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:49,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:49,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:49,156 INFO L87 Difference]: Start difference. First operand 5268 states and 7882 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:49,258 INFO L93 Difference]: Finished difference Result 10985 states and 16457 transitions. [2022-07-11 23:56:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:49,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2022-07-11 23:56:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:49,266 INFO L225 Difference]: With dead ends: 10985 [2022-07-11 23:56:49,267 INFO L226 Difference]: Without dead ends: 5740 [2022-07-11 23:56:49,272 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 23:56:49,272 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:49,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 587 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2022-07-11 23:56:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5740. [2022-07-11 23:56:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 5739 states have (on average 1.4959052099668932) internal successors, (8585), 5739 states have internal predecessors, (8585), 0 states have call successors, (0), 0 states 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 23:56:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 8585 transitions. [2022-07-11 23:56:49,350 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 8585 transitions. Word has length 394 [2022-07-11 23:56:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:49,351 INFO L495 AbstractCegarLoop]: Abstraction has 5740 states and 8585 transitions. [2022-07-11 23:56:49,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:56:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 8585 transitions. [2022-07-11 23:56:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-07-11 23:56:49,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:49,380 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-11 23:56:49,380 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1914583371, now seen corresponding path program 1 times [2022-07-11 23:56:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845892972] [2022-07-11 23:56:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2119 backedges. 641 proven. 0 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-07-11 23:56:49,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:49,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845892972] [2022-07-11 23:56:49,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845892972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:49,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:49,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:49,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147148418] [2022-07-11 23:56:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:49,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:49,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:49,544 INFO L87 Difference]: Start difference. First operand 5740 states and 8585 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 23:56:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:49,649 INFO L93 Difference]: Finished difference Result 11935 states and 17872 transitions. [2022-07-11 23:56:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 470 [2022-07-11 23:56:49,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:49,658 INFO L225 Difference]: With dead ends: 11935 [2022-07-11 23:56:49,659 INFO L226 Difference]: Without dead ends: 6218 [2022-07-11 23:56:49,664 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 23:56:49,664 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 158 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:49,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 375 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2022-07-11 23:56:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 6218. [2022-07-11 23:56:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6217 states have (on average 1.4973459868103587) internal successors, (9309), 6217 states have internal predecessors, (9309), 0 states have call successors, (0), 0 states 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 23:56:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 9309 transitions. [2022-07-11 23:56:49,789 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 9309 transitions. Word has length 470 [2022-07-11 23:56:49,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:49,789 INFO L495 AbstractCegarLoop]: Abstraction has 6218 states and 9309 transitions. [2022-07-11 23:56:49,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 23:56:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 9309 transitions. [2022-07-11 23:56:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2022-07-11 23:56:49,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:49,798 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-11 23:56:49,799 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2096433782, now seen corresponding path program 1 times [2022-07-11 23:56:49,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:49,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934022369] [2022-07-11 23:56:49,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:49,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 744 proven. 7 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-07-11 23:56:49,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:49,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934022369] [2022-07-11 23:56:49,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934022369] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:56:49,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986056070] [2022-07-11 23:56:49,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:49,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:56:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:56:49,980 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 23:56:49,981 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 23:56:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:50,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-11 23:56:50,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:56:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2022-07-11 23:56:50,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:56:50,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986056070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:50,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:56:50,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-11 23:56:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394680867] [2022-07-11 23:56:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:56:50,995 INFO L87 Difference]: Start difference. First operand 6218 states and 9309 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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 23:56:51,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:51,118 INFO L93 Difference]: Finished difference Result 12891 states and 19320 transitions. [2022-07-11 23:56:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:51,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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 512 [2022-07-11 23:56:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:51,130 INFO L225 Difference]: With dead ends: 12891 [2022-07-11 23:56:51,130 INFO L226 Difference]: Without dead ends: 6696 [2022-07-11 23:56:51,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 514 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 23:56:51,139 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 159 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:51,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 374 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:56:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2022-07-11 23:56:51,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 6696. [2022-07-11 23:56:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6696 states, 6695 states have (on average 1.4987303958177745) internal successors, (10034), 6695 states have internal predecessors, (10034), 0 states have call successors, (0), 0 states 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 23:56:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6696 states to 6696 states and 10034 transitions. [2022-07-11 23:56:51,236 INFO L78 Accepts]: Start accepts. Automaton has 6696 states and 10034 transitions. Word has length 512 [2022-07-11 23:56:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 6696 states and 10034 transitions. [2022-07-11 23:56:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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 23:56:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6696 states and 10034 transitions. [2022-07-11 23:56:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-07-11 23:56:51,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:51,247 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:51,271 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 23:56:51,451 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,SelfDestructingSolverStorable44 [2022-07-11 23:56:51,452 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2030741037, now seen corresponding path program 1 times [2022-07-11 23:56:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:51,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615272040] [2022-07-11 23:56:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2022-07-11 23:56:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:51,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615272040] [2022-07-11 23:56:51,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615272040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:51,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:51,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594358309] [2022-07-11 23:56:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:51,688 INFO L87 Difference]: Start difference. First operand 6696 states and 10034 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 23:56:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:52,135 INFO L93 Difference]: Finished difference Result 14544 states and 21738 transitions. [2022-07-11 23:56:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 520 [2022-07-11 23:56:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:52,146 INFO L225 Difference]: With dead ends: 14544 [2022-07-11 23:56:52,146 INFO L226 Difference]: Without dead ends: 7871 [2022-07-11 23:56:52,153 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 23:56:52,154 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 73 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:52,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 703 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:56:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2022-07-11 23:56:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7270. [2022-07-11 23:56:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 7269 states have (on average 1.4997936442426745) internal successors, (10902), 7269 states have internal predecessors, (10902), 0 states have call successors, (0), 0 states 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 23:56:52,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10902 transitions. [2022-07-11 23:56:52,283 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10902 transitions. Word has length 520 [2022-07-11 23:56:52,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:52,283 INFO L495 AbstractCegarLoop]: Abstraction has 7270 states and 10902 transitions. [2022-07-11 23:56:52,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 23:56:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10902 transitions. [2022-07-11 23:56:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-07-11 23:56:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:52,294 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:52,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-11 23:56:52,294 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:52,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1407400015, now seen corresponding path program 1 times [2022-07-11 23:56:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:52,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958444755] [2022-07-11 23:56:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 2135 trivial. 0 not checked. [2022-07-11 23:56:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958444755] [2022-07-11 23:56:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958444755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:52,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:52,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293523183] [2022-07-11 23:56:52,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:52,480 INFO L87 Difference]: Start difference. First operand 7270 states and 10902 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 23:56:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:52,628 INFO L93 Difference]: Finished difference Result 15031 states and 22561 transitions. [2022-07-11 23:56:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:52,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 520 [2022-07-11 23:56:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:52,637 INFO L225 Difference]: With dead ends: 15031 [2022-07-11 23:56:52,637 INFO L226 Difference]: Without dead ends: 7784 [2022-07-11 23:56:52,642 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 23:56:52,642 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:52,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 587 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7784 states. [2022-07-11 23:56:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7784 to 7784. [2022-07-11 23:56:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 7783 states have (on average 1.4991648464602338) internal successors, (11668), 7783 states have internal predecessors, (11668), 0 states have call successors, (0), 0 states 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 23:56:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 11668 transitions. [2022-07-11 23:56:52,737 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 11668 transitions. Word has length 520 [2022-07-11 23:56:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:52,738 INFO L495 AbstractCegarLoop]: Abstraction has 7784 states and 11668 transitions. [2022-07-11 23:56:52,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 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 23:56:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 11668 transitions. [2022-07-11 23:56:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2022-07-11 23:56:52,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:52,747 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 8, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:52,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-11 23:56:52,747 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -876039620, now seen corresponding path program 1 times [2022-07-11 23:56:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077485163] [2022-07-11 23:56:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 849 proven. 0 refuted. 0 times theorem prover too weak. 2561 trivial. 0 not checked. [2022-07-11 23:56:52,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:52,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077485163] [2022-07-11 23:56:52,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077485163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:52,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:52,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:52,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749312726] [2022-07-11 23:56:52,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:52,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:52,956 INFO L87 Difference]: Start difference. First operand 7784 states and 11668 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 23:56:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:53,087 INFO L93 Difference]: Finished difference Result 16064 states and 24100 transitions. [2022-07-11 23:56:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:53,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 597 [2022-07-11 23:56:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:53,099 INFO L225 Difference]: With dead ends: 16064 [2022-07-11 23:56:53,099 INFO L226 Difference]: Without dead ends: 8303 [2022-07-11 23:56:53,106 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 23:56:53,107 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 158 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:53,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 372 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:56:53,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8303 states. [2022-07-11 23:56:53,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8303 to 8303. [2022-07-11 23:56:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8303 states, 8302 states have (on average 1.5004818116116598) internal successors, (12457), 8302 states have internal predecessors, (12457), 0 states have call successors, (0), 0 states 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 23:56:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8303 states to 8303 states and 12457 transitions. [2022-07-11 23:56:53,255 INFO L78 Accepts]: Start accepts. Automaton has 8303 states and 12457 transitions. Word has length 597 [2022-07-11 23:56:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:53,255 INFO L495 AbstractCegarLoop]: Abstraction has 8303 states and 12457 transitions. [2022-07-11 23:56:53,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 23:56:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 8303 states and 12457 transitions. [2022-07-11 23:56:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-07-11 23:56:53,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:53,265 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 9, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:56:53,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-11 23:56:53,265 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:53,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1729200158, now seen corresponding path program 1 times [2022-07-11 23:56:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:53,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760272043] [2022-07-11 23:56:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3915 backedges. 914 proven. 0 refuted. 0 times theorem prover too weak. 3001 trivial. 0 not checked. [2022-07-11 23:56:53,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:53,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760272043] [2022-07-11 23:56:53,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760272043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:53,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:53,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:56:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740115564] [2022-07-11 23:56:53,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:56:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:56:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:56:53,500 INFO L87 Difference]: Start difference. First operand 8303 states and 12457 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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 23:56:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:53,609 INFO L93 Difference]: Finished difference Result 8824 states and 13249 transitions. [2022-07-11 23:56:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:56:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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 640 [2022-07-11 23:56:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:53,620 INFO L225 Difference]: With dead ends: 8824 [2022-07-11 23:56:53,620 INFO L226 Difference]: Without dead ends: 8822 [2022-07-11 23:56:53,623 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 23:56:53,623 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 159 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:53,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 371 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:56:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2022-07-11 23:56:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 8822. [2022-07-11 23:56:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8822 states, 8821 states have (on average 1.5017571703888448) internal successors, (13247), 8821 states have internal predecessors, (13247), 0 states have call successors, (0), 0 states 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 23:56:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8822 states to 8822 states and 13247 transitions. [2022-07-11 23:56:53,739 INFO L78 Accepts]: Start accepts. Automaton has 8822 states and 13247 transitions. Word has length 640 [2022-07-11 23:56:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 8822 states and 13247 transitions. [2022-07-11 23:56:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 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 23:56:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8822 states and 13247 transitions. [2022-07-11 23:56:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2022-07-11 23:56:53,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:53,779 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 23:56:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-11 23:56:53,779 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:53,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:53,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1235463390, now seen corresponding path program 1 times [2022-07-11 23:56:53,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:53,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569184754] [2022-07-11 23:56:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:53,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 2676 proven. 480 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-07-11 23:56:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569184754] [2022-07-11 23:56:54,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569184754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:56:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484543870] [2022-07-11 23:56:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:54,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:56:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:56:54,483 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 23:56:54,484 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 23:56:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:55,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 23:56:55,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:56:55,642 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 23:56:55,646 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 23:56:55,660 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-11 23:56:55,660 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 23:56:55,732 INFO L356 Elim1Store]: treesize reduction 66, result has 30.5 percent of original size [2022-07-11 23:56:55,733 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 23:56:55,785 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 23:56:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3946 backedges. 2245 proven. 0 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2022-07-11 23:56:55,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 23:56:55,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484543870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:55,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-11 23:56:55,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 15 [2022-07-11 23:56:55,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783178714] [2022-07-11 23:56:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:56:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:56:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:56:55,794 INFO L87 Difference]: Start difference. First operand 8822 states and 13247 transitions. Second operand has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 23:56:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:57,604 INFO L93 Difference]: Finished difference Result 24937 states and 37503 transitions. [2022-07-11 23:56:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:56:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 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 649 [2022-07-11 23:56:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:57,622 INFO L225 Difference]: With dead ends: 24937 [2022-07-11 23:56:57,623 INFO L226 Difference]: Without dead ends: 16138 [2022-07-11 23:56:57,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-07-11 23:56:57,633 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 127 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:57,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1140 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 478 Invalid, 0 Unknown, 82 Unchecked, 1.6s Time] [2022-07-11 23:56:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2022-07-11 23:56:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 15847. [2022-07-11 23:56:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15847 states, 15846 states have (on average 1.5089612520509907) internal successors, (23911), 15846 states have internal predecessors, (23911), 0 states have call successors, (0), 0 states 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 23:56:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15847 states to 15847 states and 23911 transitions. [2022-07-11 23:56:57,941 INFO L78 Accepts]: Start accepts. Automaton has 15847 states and 23911 transitions. Word has length 649 [2022-07-11 23:56:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:57,941 INFO L495 AbstractCegarLoop]: Abstraction has 15847 states and 23911 transitions. [2022-07-11 23:56:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.333333333333336) internal successors, (218), 6 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 23:56:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15847 states and 23911 transitions. [2022-07-11 23:56:57,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-07-11 23:56:57,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:57,961 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:58,003 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 23:56:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:56:58,163 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 71254686, now seen corresponding path program 1 times [2022-07-11 23:56:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:58,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091050352] [2022-07-11 23:56:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3953 backedges. 2140 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-07-11 23:56:58,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:58,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091050352] [2022-07-11 23:56:58,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091050352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:56:58,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:56:58,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:56:58,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90279505] [2022-07-11 23:56:58,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:56:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:56:58,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:56:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:56:58,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:56:58,413 INFO L87 Difference]: Start difference. First operand 15847 states and 23911 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 23:56:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:56:59,242 INFO L93 Difference]: Finished difference Result 33097 states and 49753 transitions. [2022-07-11 23:56:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:56:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 651 [2022-07-11 23:56:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:56:59,262 INFO L225 Difference]: With dead ends: 33097 [2022-07-11 23:56:59,262 INFO L226 Difference]: Without dead ends: 17273 [2022-07-11 23:56:59,273 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 23:56:59,273 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 71 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:56:59,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 701 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:56:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17273 states. [2022-07-11 23:56:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17273 to 15881. [2022-07-11 23:56:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15881 states, 15880 states have (on average 1.5078715365239295) internal successors, (23945), 15880 states have internal predecessors, (23945), 0 states have call successors, (0), 0 states 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 23:56:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15881 states to 15881 states and 23945 transitions. [2022-07-11 23:56:59,512 INFO L78 Accepts]: Start accepts. Automaton has 15881 states and 23945 transitions. Word has length 651 [2022-07-11 23:56:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:56:59,513 INFO L495 AbstractCegarLoop]: Abstraction has 15881 states and 23945 transitions. [2022-07-11 23:56:59,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 23:56:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 15881 states and 23945 transitions. [2022-07-11 23:56:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2022-07-11 23:56:59,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:56:59,530 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 16, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-11 23:56:59,531 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:56:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:56:59,531 INFO L85 PathProgramCache]: Analyzing trace with hash -645334114, now seen corresponding path program 1 times [2022-07-11 23:56:59,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:56:59,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523582068] [2022-07-11 23:56:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:59,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:56:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:56:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 2478 proven. 187 refuted. 0 times theorem prover too weak. 1913 trivial. 0 not checked. [2022-07-11 23:56:59,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:56:59,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523582068] [2022-07-11 23:56:59,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523582068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:56:59,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452811615] [2022-07-11 23:56:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:56:59,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:56:59,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:56:59,772 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 23:56:59,773 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 23:57:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:00,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-11 23:57:00,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:57:00,950 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:00,951 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 23:57:00,975 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:57:00,976 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 23:57:00,986 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 23:57:01,001 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:01,001 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 23 treesize of output 22 [2022-07-11 23:57:01,020 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 7 [2022-07-11 23:57:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1683 proven. 240 refuted. 0 times theorem prover too weak. 2655 trivial. 0 not checked. [2022-07-11 23:57:01,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:57:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 1688 proven. 0 refuted. 0 times theorem prover too weak. 2890 trivial. 0 not checked. [2022-07-11 23:57:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452811615] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-11 23:57:01,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:57:01,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-11 23:57:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680469674] [2022-07-11 23:57:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:57:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:57:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:57:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:57:01,062 INFO L87 Difference]: Start difference. First operand 15881 states and 23945 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 23:57:02,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:57:03,396 INFO L93 Difference]: Finished difference Result 34069 states and 51119 transitions. [2022-07-11 23:57:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:57:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 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 693 [2022-07-11 23:57:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:57:03,415 INFO L225 Difference]: With dead ends: 34069 [2022-07-11 23:57:03,415 INFO L226 Difference]: Without dead ends: 18211 [2022-07-11 23:57:03,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1393 GetRequests, 1385 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:57:03,428 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 140 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:57:03,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 455 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-11 23:57:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18211 states. [2022-07-11 23:57:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18211 to 15881. [2022-07-11 23:57:03,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15881 states, 15880 states have (on average 1.488727959697733) internal successors, (23641), 15880 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states 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 23:57:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15881 states to 15881 states and 23641 transitions. [2022-07-11 23:57:03,681 INFO L78 Accepts]: Start accepts. Automaton has 15881 states and 23641 transitions. Word has length 693 [2022-07-11 23:57:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:57:03,681 INFO L495 AbstractCegarLoop]: Abstraction has 15881 states and 23641 transitions. [2022-07-11 23:57:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 23:57:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 15881 states and 23641 transitions. [2022-07-11 23:57:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2022-07-11 23:57:03,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:57:03,701 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:03,727 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 23:57:03,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:57:03,915 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:57:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:57:03,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2077505566, now seen corresponding path program 1 times [2022-07-11 23:57:03,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:57:03,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703495842] [2022-07-11 23:57:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:57:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4638 backedges. 2542 proven. 46 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2022-07-11 23:57:04,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:57:04,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703495842] [2022-07-11 23:57:04,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703495842] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:57:04,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528042956] [2022-07-11 23:57:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:04,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:57:04,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:57:04,154 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 23:57:04,155 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 23:57:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 3024 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-11 23:57:05,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:57:05,377 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:05,377 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 23:57:05,403 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:57:05,404 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 23:57:05,427 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 23:57:05,445 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:05,446 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 23:57:05,496 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 7 [2022-07-11 23:57:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4638 backedges. 2537 proven. 238 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2022-07-11 23:57:05,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:57:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4638 backedges. 2510 proven. 0 refuted. 0 times theorem prover too weak. 2128 trivial. 0 not checked. [2022-07-11 23:57:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528042956] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-11 23:57:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:57:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 8] total 10 [2022-07-11 23:57:05,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871799798] [2022-07-11 23:57:05,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:57:05,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:57:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:57:05,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:57:05,652 INFO L87 Difference]: Start difference. First operand 15881 states and 23641 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 23:57:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:57:06,950 INFO L93 Difference]: Finished difference Result 34069 states and 50511 transitions. [2022-07-11 23:57:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:57:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 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 693 [2022-07-11 23:57:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:57:06,970 INFO L225 Difference]: With dead ends: 34069 [2022-07-11 23:57:06,970 INFO L226 Difference]: Without dead ends: 18211 [2022-07-11 23:57:06,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1393 GetRequests, 1384 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:57:06,983 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 121 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:57:06,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 565 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:57:06,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18211 states. [2022-07-11 23:57:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18211 to 15915. [2022-07-11 23:57:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15915 states, 15914 states have (on average 1.4876838004272968) internal successors, (23675), 15914 states have internal predecessors, (23675), 0 states have call successors, (0), 0 states 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 23:57:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15915 states to 15915 states and 23675 transitions. [2022-07-11 23:57:07,237 INFO L78 Accepts]: Start accepts. Automaton has 15915 states and 23675 transitions. Word has length 693 [2022-07-11 23:57:07,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:57:07,238 INFO L495 AbstractCegarLoop]: Abstraction has 15915 states and 23675 transitions. [2022-07-11 23:57:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 23:57:07,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15915 states and 23675 transitions. [2022-07-11 23:57:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-07-11 23:57:07,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:57:07,255 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 16, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:07,280 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 23:57:07,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:57:07,455 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:57:07,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:57:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 392922944, now seen corresponding path program 1 times [2022-07-11 23:57:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:57:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941937060] [2022-07-11 23:57:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:07,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:57:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4611 backedges. 2511 proven. 0 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2022-07-11 23:57:07,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:57:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941937060] [2022-07-11 23:57:07,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941937060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:57:07,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:57:07,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:57:07,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430569429] [2022-07-11 23:57:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:57:07,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:57:07,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:07,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:57:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:57:07,684 INFO L87 Difference]: Start difference. First operand 15915 states and 23675 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 23:57:09,064 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 23:57:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:57:09,590 INFO L93 Difference]: Finished difference Result 33063 states and 49021 transitions. [2022-07-11 23:57:09,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:57:09,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 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 695 [2022-07-11 23:57:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:57:09,607 INFO L225 Difference]: With dead ends: 33063 [2022-07-11 23:57:09,607 INFO L226 Difference]: Without dead ends: 17171 [2022-07-11 23:57:09,620 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 23:57:09,620 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 84 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:57:09,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 691 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:57:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17171 states. [2022-07-11 23:57:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17171 to 15915. [2022-07-11 23:57:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15915 states, 15914 states have (on average 1.4855473168279503) internal successors, (23641), 15914 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states 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 23:57:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15915 states to 15915 states and 23641 transitions. [2022-07-11 23:57:09,933 INFO L78 Accepts]: Start accepts. Automaton has 15915 states and 23641 transitions. Word has length 695 [2022-07-11 23:57:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:57:09,933 INFO L495 AbstractCegarLoop]: Abstraction has 15915 states and 23641 transitions. [2022-07-11 23:57:09,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 23:57:09,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15915 states and 23641 transitions. [2022-07-11 23:57:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-07-11 23:57:09,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:57:09,952 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 15, 15, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-11 23:57:09,952 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:57:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:57:09,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1108902090, now seen corresponding path program 1 times [2022-07-11 23:57:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:57:09,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614593971] [2022-07-11 23:57:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:57:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 2441 proven. 0 refuted. 0 times theorem prover too weak. 2204 trivial. 0 not checked. [2022-07-11 23:57:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:57:10,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614593971] [2022-07-11 23:57:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614593971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:57:10,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:57:10,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:57:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538808488] [2022-07-11 23:57:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:57:10,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:57:10,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:57:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:57:10,196 INFO L87 Difference]: Start difference. First operand 15915 states and 23641 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 23:57:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:57:10,783 INFO L93 Difference]: Finished difference Result 33167 states and 49191 transitions. [2022-07-11 23:57:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:57:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 695 [2022-07-11 23:57:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:57:10,802 INFO L225 Difference]: With dead ends: 33167 [2022-07-11 23:57:10,802 INFO L226 Difference]: Without dead ends: 17275 [2022-07-11 23:57:10,814 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 23:57:10,814 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 29 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:57:10,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 629 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:57:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17275 states. [2022-07-11 23:57:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17275 to 16799. [2022-07-11 23:57:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16799 states, 16798 states have (on average 1.48225979283248) internal successors, (24899), 16798 states have internal predecessors, (24899), 0 states have call successors, (0), 0 states 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 23:57:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16799 states to 16799 states and 24899 transitions. [2022-07-11 23:57:11,156 INFO L78 Accepts]: Start accepts. Automaton has 16799 states and 24899 transitions. Word has length 695 [2022-07-11 23:57:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:57:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 16799 states and 24899 transitions. [2022-07-11 23:57:11,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 23:57:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 16799 states and 24899 transitions. [2022-07-11 23:57:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2022-07-11 23:57:11,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:57:11,175 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 6, 6, 5, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:11,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-11 23:57:11,175 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:57:11,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:57:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash 728876478, now seen corresponding path program 1 times [2022-07-11 23:57:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:57:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899669268] [2022-07-11 23:57:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:57:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 2525 proven. 0 refuted. 0 times theorem prover too weak. 2237 trivial. 0 not checked. [2022-07-11 23:57:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:57:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899669268] [2022-07-11 23:57:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899669268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:57:11,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:57:11,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:57:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646566152] [2022-07-11 23:57:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:57:11,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:57:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:57:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:57:11,404 INFO L87 Difference]: Start difference. First operand 16799 states and 24899 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 23:57:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:57:11,944 INFO L93 Difference]: Finished difference Result 33983 states and 50348 transitions. [2022-07-11 23:57:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:57:11,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 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 701 [2022-07-11 23:57:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:57:11,961 INFO L225 Difference]: With dead ends: 33983 [2022-07-11 23:57:11,961 INFO L226 Difference]: Without dead ends: 17207 [2022-07-11 23:57:11,972 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 23:57:11,973 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 43 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:57:11,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 644 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:57:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17207 states. [2022-07-11 23:57:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17207 to 16799. [2022-07-11 23:57:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16799 states, 16798 states have (on average 1.48124776759138) internal successors, (24882), 16798 states have internal predecessors, (24882), 0 states have call successors, (0), 0 states 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 23:57:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16799 states to 16799 states and 24882 transitions. [2022-07-11 23:57:12,226 INFO L78 Accepts]: Start accepts. Automaton has 16799 states and 24882 transitions. Word has length 701 [2022-07-11 23:57:12,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:57:12,227 INFO L495 AbstractCegarLoop]: Abstraction has 16799 states and 24882 transitions. [2022-07-11 23:57:12,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 23:57:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16799 states and 24882 transitions. [2022-07-11 23:57:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2022-07-11 23:57:12,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:57:12,244 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 18, 18, 17, 17, 16, 16, 15, 15, 15, 15, 13, 12, 12, 11, 11, 10, 10, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:57:12,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-11 23:57:12,244 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:57:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:57:12,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1335303222, now seen corresponding path program 1 times [2022-07-11 23:57:12,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:57:12,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692949705] [2022-07-11 23:57:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:57:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4859 backedges. 1577 proven. 2924 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-11 23:57:14,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:57:14,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692949705] [2022-07-11 23:57:14,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692949705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:57:14,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165883904] [2022-07-11 23:57:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:57:14,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:57:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:57:14,869 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 23:57:14,870 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 23:57:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:57:16,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 3032 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-11 23:57:16,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:57:16,168 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:16,168 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 23:57:16,263 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-11 23:57:16,263 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 23:57:16,323 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 23:57:16,364 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 6 treesize of output 5 [2022-07-11 23:57:16,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:16,396 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 45 treesize of output 44 [2022-07-11 23:57:16,426 INFO L356 Elim1Store]: treesize reduction 72, result has 40.0 percent of original size [2022-07-11 23:57:16,426 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 2 case distinctions, treesize of input 41 treesize of output 60 [2022-07-11 23:57:16,435 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-11 23:57:16,436 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 72 [2022-07-11 23:57:16,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:16,930 INFO L356 Elim1Store]: treesize reduction 127, result has 14.2 percent of original size [2022-07-11 23:57:16,930 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 59 treesize of output 49 [2022-07-11 23:57:16,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:16,936 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 58 treesize of output 51 [2022-07-11 23:57:16,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:16,940 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 58 treesize of output 51 [2022-07-11 23:57:16,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:17,008 INFO L356 Elim1Store]: treesize reduction 77, result has 35.8 percent of original size [2022-07-11 23:57:17,008 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 44 treesize of output 68 [2022-07-11 23:57:17,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:17,014 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 80 treesize of output 67 [2022-07-11 23:57:17,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:17,019 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 80 treesize of output 67 [2022-07-11 23:57:17,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:17,533 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-11 23:57:17,534 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 155 [2022-07-11 23:57:17,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:17,566 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-11 23:57:17,566 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 132 [2022-07-11 23:57:17,607 INFO L356 Elim1Store]: treesize reduction 45, result has 52.6 percent of original size [2022-07-11 23:57:17,607 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 40 treesize of output 73 [2022-07-11 23:57:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,452 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 388 treesize of output 310 [2022-07-11 23:57:18,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:18,460 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 388 treesize of output 310 [2022-07-11 23:57:18,502 INFO L356 Elim1Store]: treesize reduction 231, result has 26.4 percent of original size [2022-07-11 23:57:18,503 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 388 treesize of output 407 [2022-07-11 23:57:25,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,804 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 364 treesize of output 288 [2022-07-11 23:57:25,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,817 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 364 treesize of output 288 [2022-07-11 23:57:25,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:25,850 INFO L356 Elim1Store]: treesize reduction 105, result has 29.1 percent of original size [2022-07-11 23:57:25,851 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 373 treesize of output 370 [2022-07-11 23:57:26,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:26,150 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 23:57:26,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:26,156 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 23:57:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:57:26,203 INFO L356 Elim1Store]: treesize reduction 115, result has 35.4 percent of original size [2022-07-11 23:57:26,203 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 6 case distinctions, treesize of input 61 treesize of output 95 [2022-07-11 23:57:26,260 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-07-11 23:57:26,261 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 35 [2022-07-11 23:57:26,344 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-11 23:57:26,344 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 23:57:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4859 backedges. 1764 proven. 573 refuted. 0 times theorem prover too weak. 2522 trivial. 0 not checked. [2022-07-11 23:57:26,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:57:31,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:57:31,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:57:31,903 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 714 treesize of output 552 [2022-07-11 23:57:31,907 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:57:31,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 23:57:31,912 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 924 treesize of output 768 [2022-07-11 23:57:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4859 backedges. 1895 proven. 141 refuted. 0 times theorem prover too weak. 2823 trivial. 0 not checked. [2022-07-11 23:57:36,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165883904] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:57:36,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 23:57:36,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 53 [2022-07-11 23:57:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827058711] [2022-07-11 23:57:36,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 23:57:36,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-11 23:57:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:57:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-11 23:57:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2450, Unknown=3, NotChecked=0, Total=2756 [2022-07-11 23:57:36,235 INFO L87 Difference]: Start difference. First operand 16799 states and 24882 transitions. Second operand has 53 states, 53 states have (on average 17.18867924528302) internal successors, (911), 53 states have internal predecessors, (911), 0 states have call successors, (0), 0 states 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 23:57:38,016 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 23:57:40,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:42,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:44,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:45,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:49,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:57:50,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []