./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.10.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 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:39:11,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:39:11,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:39:11,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:39:11,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:39:11,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:39:11,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:39:11,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:39:11,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:39:11,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:39:11,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:39:11,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:39:11,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:39:11,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:39:11,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:39:11,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:39:11,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:39:11,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:39:11,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:39:11,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:39:11,943 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:39:11,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:39:11,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:39:11,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:39:11,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:39:11,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:39:11,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:39:11,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:39:11,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:39:11,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:39:11,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:39:11,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:39:11,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:39:11,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:39:11,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:39:11,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:39:11,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:39:11,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:39:11,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:39:11,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:39:11,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:39:11,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:39:11,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:39:12,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:39:12,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:39:12,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:39:12,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:39:12,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:39:12,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:39:12,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:39:12,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:39:12,016 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:39:12,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:39:12,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:39:12,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:39:12,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:39:12,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:39:12,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:39:12,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:39:12,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:39:12,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:39:12,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:39:12,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:39:12,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:39:12,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:39:12,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:39:12,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:39:12,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:39:12,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:39:12,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:39:12,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:39:12,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:39:12,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:39:12,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:39:12,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:39:12,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:39:12,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd [2022-07-20 22:39:12,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:39:12,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:39:12,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:39:12,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:39:12,358 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:39:12,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-20 22:39:12,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619dee19c/5a189f2cd05544d2ad99e9c76cd34f99/FLAG85c44eb48 [2022-07-20 22:39:12,943 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:39:12,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-20 22:39:12,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619dee19c/5a189f2cd05544d2ad99e9c76cd34f99/FLAG85c44eb48 [2022-07-20 22:39:13,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/619dee19c/5a189f2cd05544d2ad99e9c76cd34f99 [2022-07-20 22:39:13,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:39:13,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:39:13,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:39:13,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:39:13,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:39:13,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:39:13" (1/1) ... [2022-07-20 22:39:13,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:13, skipping insertion in model container [2022-07-20 22:39:13,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:39:13" (1/1) ... [2022-07-20 22:39:13,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:39:13,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:39:13,855 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.10.i.cil-2.c[73311,73324] [2022-07-20 22:39:13,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:39:13,883 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:39:14,001 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.10.i.cil-2.c[73311,73324] [2022-07-20 22:39:14,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:39:14,016 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:39:14,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14 WrapperNode [2022-07-20 22:39:14,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:39:14,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:39:14,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:39:14,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:39:14,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,114 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 787 [2022-07-20 22:39:14,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:39:14,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:39:14,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:39:14,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:39:14,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:39:14,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:39:14,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:39:14,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:39:14,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (1/1) ... [2022-07-20 22:39:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:39:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:39:14,252 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) [2022-07-20 22:39:14,260 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 [2022-07-20 22:39:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:39:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 22:39:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 22:39:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 22:39:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 22:39:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:39:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 22:39:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:39:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:39:14,414 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:39:14,416 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:39:14,430 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:39:16,603 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-20 22:39:16,604 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-20 22:39:16,604 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:39:16,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:39:16,611 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:39:16,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:39:16 BoogieIcfgContainer [2022-07-20 22:39:16,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:39:16,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:39:16,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:39:16,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:39:16,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:39:13" (1/3) ... [2022-07-20 22:39:16,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792211b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:39:16, skipping insertion in model container [2022-07-20 22:39:16,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:39:14" (2/3) ... [2022-07-20 22:39:16,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792211b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:39:16, skipping insertion in model container [2022-07-20 22:39:16,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:39:16" (3/3) ... [2022-07-20 22:39:16,619 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2022-07-20 22:39:16,631 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:39:16,632 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:39:16,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:39:16,701 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@75aa97f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6088f241 [2022-07-20 22:39:16,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:39:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 22:39:16,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:16,726 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] [2022-07-20 22:39:16,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:16,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1692155939, now seen corresponding path program 1 times [2022-07-20 22:39:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775287042] [2022-07-20 22:39:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:16,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:17,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775287042] [2022-07-20 22:39:17,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775287042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:17,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:17,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859356282] [2022-07-20 22:39:17,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:17,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:17,346 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 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 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:18,080 INFO L93 Difference]: Finished difference Result 412 states and 698 transitions. [2022-07-20 22:39:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:18,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-20 22:39:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:18,092 INFO L225 Difference]: With dead ends: 412 [2022-07-20 22:39:18,092 INFO L226 Difference]: Without dead ends: 250 [2022-07-20 22:39:18,095 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 [2022-07-20 22:39:18,097 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 150 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 423 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 [2022-07-20 22:39:18,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 423 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:39:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-20 22:39:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2022-07-20 22:39:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 173 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 277 transitions. [2022-07-20 22:39:18,138 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 277 transitions. Word has length 43 [2022-07-20 22:39:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 277 transitions. [2022-07-20 22:39:18,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 277 transitions. [2022-07-20 22:39:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-20 22:39:18,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:18,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:18,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:39:18,145 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:18,146 INFO L85 PathProgramCache]: Analyzing trace with hash 910693922, now seen corresponding path program 1 times [2022-07-20 22:39:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104342980] [2022-07-20 22:39:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:18,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104342980] [2022-07-20 22:39:18,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104342980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:18,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:18,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:18,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832145206] [2022-07-20 22:39:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:18,270 INFO L87 Difference]: Start difference. First operand 174 states and 277 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:18,800 INFO L93 Difference]: Finished difference Result 366 states and 581 transitions. [2022-07-20 22:39:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-20 22:39:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:18,802 INFO L225 Difference]: With dead ends: 366 [2022-07-20 22:39:18,802 INFO L226 Difference]: Without dead ends: 202 [2022-07-20 22:39:18,803 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 [2022-07-20 22:39:18,804 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:18,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 451 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-20 22:39:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-07-20 22:39:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.608695652173913) internal successors, (296), 184 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 296 transitions. [2022-07-20 22:39:18,817 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 296 transitions. Word has length 44 [2022-07-20 22:39:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:18,817 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 296 transitions. [2022-07-20 22:39:18,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 296 transitions. [2022-07-20 22:39:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-20 22:39:18,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:18,819 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] [2022-07-20 22:39:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:39:18,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1232633144, now seen corresponding path program 1 times [2022-07-20 22:39:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:18,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149875537] [2022-07-20 22:39:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:18,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149875537] [2022-07-20 22:39:18,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149875537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:18,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:18,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848993579] [2022-07-20 22:39:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:18,962 INFO L87 Difference]: Start difference. First operand 185 states and 296 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:20,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:20,155 INFO L93 Difference]: Finished difference Result 503 states and 809 transitions. [2022-07-20 22:39:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:20,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-20 22:39:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:20,158 INFO L225 Difference]: With dead ends: 503 [2022-07-20 22:39:20,158 INFO L226 Difference]: Without dead ends: 339 [2022-07-20 22:39:20,159 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 [2022-07-20 22:39:20,160 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 139 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:20,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 588 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-20 22:39:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-20 22:39:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2022-07-20 22:39:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.6064814814814814) internal successors, (347), 216 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 347 transitions. [2022-07-20 22:39:20,173 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 347 transitions. Word has length 57 [2022-07-20 22:39:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:20,176 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 347 transitions. [2022-07-20 22:39:20,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 347 transitions. [2022-07-20 22:39:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:39:20,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:20,181 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] [2022-07-20 22:39:20,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:39:20,181 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:20,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1458561385, now seen corresponding path program 1 times [2022-07-20 22:39:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:20,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968679475] [2022-07-20 22:39:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:20,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968679475] [2022-07-20 22:39:20,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968679475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:20,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:20,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:20,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269422639] [2022-07-20 22:39:20,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:20,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:20,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:20,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:20,331 INFO L87 Difference]: Start difference. First operand 217 states and 347 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:21,180 INFO L93 Difference]: Finished difference Result 511 states and 812 transitions. [2022-07-20 22:39:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:21,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 22:39:21,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:21,182 INFO L225 Difference]: With dead ends: 511 [2022-07-20 22:39:21,182 INFO L226 Difference]: Without dead ends: 315 [2022-07-20 22:39:21,183 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 [2022-07-20 22:39:21,184 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 144 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 316 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 [2022-07-20 22:39:21,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 22:39:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-20 22:39:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 217. [2022-07-20 22:39:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.587962962962963) internal successors, (343), 216 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2022-07-20 22:39:21,193 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 58 [2022-07-20 22:39:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:21,193 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2022-07-20 22:39:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2022-07-20 22:39:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:39:21,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:21,195 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] [2022-07-20 22:39:21,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:39:21,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:21,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1788895107, now seen corresponding path program 1 times [2022-07-20 22:39:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:21,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419985997] [2022-07-20 22:39:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:21,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419985997] [2022-07-20 22:39:21,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419985997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:21,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:21,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10471638] [2022-07-20 22:39:21,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:21,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:21,314 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:22,121 INFO L93 Difference]: Finished difference Result 429 states and 675 transitions. [2022-07-20 22:39:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 22:39:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:22,123 INFO L225 Difference]: With dead ends: 429 [2022-07-20 22:39:22,123 INFO L226 Difference]: Without dead ends: 233 [2022-07-20 22:39:22,124 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 [2022-07-20 22:39:22,125 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 26 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:22,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 455 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 22:39:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-20 22:39:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 217. [2022-07-20 22:39:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5833333333333333) internal successors, (342), 216 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 342 transitions. [2022-07-20 22:39:22,132 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 342 transitions. Word has length 58 [2022-07-20 22:39:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:22,133 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 342 transitions. [2022-07-20 22:39:22,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 342 transitions. [2022-07-20 22:39:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:39:22,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:22,135 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] [2022-07-20 22:39:22,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:39:22,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 653028812, now seen corresponding path program 1 times [2022-07-20 22:39:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880594400] [2022-07-20 22:39:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:22,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880594400] [2022-07-20 22:39:22,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880594400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:22,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:22,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813311478] [2022-07-20 22:39:22,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:22,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:22,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:22,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:22,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:22,241 INFO L87 Difference]: Start difference. First operand 217 states and 342 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:22,726 INFO L93 Difference]: Finished difference Result 428 states and 673 transitions. [2022-07-20 22:39:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:22,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 22:39:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:22,728 INFO L225 Difference]: With dead ends: 428 [2022-07-20 22:39:22,728 INFO L226 Difference]: Without dead ends: 232 [2022-07-20 22:39:22,728 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 [2022-07-20 22:39:22,729 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 19 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 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 [2022-07-20 22:39:22,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-20 22:39:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 217. [2022-07-20 22:39:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 341 transitions. [2022-07-20 22:39:22,735 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 341 transitions. Word has length 58 [2022-07-20 22:39:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:22,735 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 341 transitions. [2022-07-20 22:39:22,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 341 transitions. [2022-07-20 22:39:22,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 22:39:22,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:22,736 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] [2022-07-20 22:39:22,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:39:22,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1973882124, now seen corresponding path program 1 times [2022-07-20 22:39:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:22,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671877230] [2022-07-20 22:39:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:22,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:22,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671877230] [2022-07-20 22:39:22,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671877230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:22,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:22,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855661886] [2022-07-20 22:39:22,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:22,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:22,836 INFO L87 Difference]: Start difference. First operand 217 states and 341 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:23,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:23,530 INFO L93 Difference]: Finished difference Result 511 states and 803 transitions. [2022-07-20 22:39:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-20 22:39:23,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:23,532 INFO L225 Difference]: With dead ends: 511 [2022-07-20 22:39:23,532 INFO L226 Difference]: Without dead ends: 315 [2022-07-20 22:39:23,533 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 [2022-07-20 22:39:23,534 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:23,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:39:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-20 22:39:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 218. [2022-07-20 22:39:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.566820276497696) internal successors, (340), 217 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 340 transitions. [2022-07-20 22:39:23,549 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 340 transitions. Word has length 58 [2022-07-20 22:39:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:23,551 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 340 transitions. [2022-07-20 22:39:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 340 transitions. [2022-07-20 22:39:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-20 22:39:23,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:23,552 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] [2022-07-20 22:39:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:39:23,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 477040383, now seen corresponding path program 1 times [2022-07-20 22:39:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157528139] [2022-07-20 22:39:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:23,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:23,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:23,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157528139] [2022-07-20 22:39:23,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157528139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:23,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:23,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515536446] [2022-07-20 22:39:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:23,675 INFO L87 Difference]: Start difference. First operand 218 states and 340 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:24,224 INFO L93 Difference]: Finished difference Result 428 states and 669 transitions. [2022-07-20 22:39:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:24,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-20 22:39:24,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:24,226 INFO L225 Difference]: With dead ends: 428 [2022-07-20 22:39:24,226 INFO L226 Difference]: Without dead ends: 231 [2022-07-20 22:39:24,226 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 [2022-07-20 22:39:24,227 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 22 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 461 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 [2022-07-20 22:39:24,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-20 22:39:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-20 22:39:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5622119815668203) internal successors, (339), 217 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 339 transitions. [2022-07-20 22:39:24,237 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 339 transitions. Word has length 59 [2022-07-20 22:39:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:24,239 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 339 transitions. [2022-07-20 22:39:24,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 339 transitions. [2022-07-20 22:39:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-20 22:39:24,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:24,241 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] [2022-07-20 22:39:24,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:39:24,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1137447710, now seen corresponding path program 1 times [2022-07-20 22:39:24,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969502158] [2022-07-20 22:39:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:24,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:24,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969502158] [2022-07-20 22:39:24,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969502158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:24,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:24,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443993222] [2022-07-20 22:39:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:24,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:24,353 INFO L87 Difference]: Start difference. First operand 218 states and 339 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) [2022-07-20 22:39:25,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:25,835 INFO L93 Difference]: Finished difference Result 428 states and 668 transitions. [2022-07-20 22:39:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:25,836 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 [2022-07-20 22:39:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:25,837 INFO L225 Difference]: With dead ends: 428 [2022-07-20 22:39:25,837 INFO L226 Difference]: Without dead ends: 231 [2022-07-20 22:39:25,838 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 [2022-07-20 22:39:25,839 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 20 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:25,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 22:39:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-20 22:39:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-20 22:39:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5576036866359446) internal successors, (338), 217 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 338 transitions. [2022-07-20 22:39:25,845 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 338 transitions. Word has length 60 [2022-07-20 22:39:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:25,845 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 338 transitions. [2022-07-20 22:39:25,845 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) [2022-07-20 22:39:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 338 transitions. [2022-07-20 22:39:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-20 22:39:25,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:25,846 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] [2022-07-20 22:39:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:39:25,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1486530822, now seen corresponding path program 1 times [2022-07-20 22:39:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:25,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012791360] [2022-07-20 22:39:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:25,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:25,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012791360] [2022-07-20 22:39:25,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012791360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:25,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:25,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:25,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355845823] [2022-07-20 22:39:25,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:25,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:25,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:25,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:25,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:25,960 INFO L87 Difference]: Start difference. First operand 218 states and 338 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) [2022-07-20 22:39:26,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:26,856 INFO L93 Difference]: Finished difference Result 418 states and 654 transitions. [2022-07-20 22:39:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:26,857 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 [2022-07-20 22:39:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:26,858 INFO L225 Difference]: With dead ends: 418 [2022-07-20 22:39:26,858 INFO L226 Difference]: Without dead ends: 221 [2022-07-20 22:39:26,858 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 [2022-07-20 22:39:26,859 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 11 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:26,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 475 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 22:39:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-20 22:39:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2022-07-20 22:39:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5529953917050692) internal successors, (337), 217 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 337 transitions. [2022-07-20 22:39:26,864 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 337 transitions. Word has length 61 [2022-07-20 22:39:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:26,864 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 337 transitions. [2022-07-20 22:39:26,864 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) [2022-07-20 22:39:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 337 transitions. [2022-07-20 22:39:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-20 22:39:26,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:26,865 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] [2022-07-20 22:39:26,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:39:26,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash -813532014, now seen corresponding path program 1 times [2022-07-20 22:39:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:26,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111516278] [2022-07-20 22:39:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:26,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:26,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:26,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111516278] [2022-07-20 22:39:26,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111516278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:26,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:26,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572675716] [2022-07-20 22:39:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:26,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:27,000 INFO L87 Difference]: Start difference. First operand 218 states and 337 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) [2022-07-20 22:39:27,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:27,899 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2022-07-20 22:39:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:27,900 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 [2022-07-20 22:39:27,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:27,902 INFO L225 Difference]: With dead ends: 512 [2022-07-20 22:39:27,902 INFO L226 Difference]: Without dead ends: 315 [2022-07-20 22:39:27,902 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 [2022-07-20 22:39:27,903 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 114 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:27,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 330 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 22:39:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-20 22:39:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2022-07-20 22:39:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5916666666666666) internal successors, (382), 240 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 382 transitions. [2022-07-20 22:39:27,909 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 382 transitions. Word has length 61 [2022-07-20 22:39:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:27,909 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 382 transitions. [2022-07-20 22:39:27,909 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) [2022-07-20 22:39:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 382 transitions. [2022-07-20 22:39:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-20 22:39:27,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:27,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:39:27,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1848715960, now seen corresponding path program 1 times [2022-07-20 22:39:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:27,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84422763] [2022-07-20 22:39:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:27,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:28,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84422763] [2022-07-20 22:39:28,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84422763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:28,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:28,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:28,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141576535] [2022-07-20 22:39:28,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:28,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:28,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:28,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:28,036 INFO L87 Difference]: Start difference. First operand 241 states and 382 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:28,795 INFO L93 Difference]: Finished difference Result 611 states and 977 transitions. [2022-07-20 22:39:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-07-20 22:39:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:28,797 INFO L225 Difference]: With dead ends: 611 [2022-07-20 22:39:28,797 INFO L226 Difference]: Without dead ends: 391 [2022-07-20 22:39:28,798 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 [2022-07-20 22:39:28,798 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 120 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:28,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 326 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:39:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-20 22:39:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2022-07-20 22:39:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.618421052631579) internal successors, (492), 304 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 492 transitions. [2022-07-20 22:39:28,805 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 492 transitions. Word has length 89 [2022-07-20 22:39:28,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:28,806 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 492 transitions. [2022-07-20 22:39:28,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:28,806 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 492 transitions. [2022-07-20 22:39:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-20 22:39:28,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:28,807 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:28,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:39:28,808 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1555801769, now seen corresponding path program 1 times [2022-07-20 22:39:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:28,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522006825] [2022-07-20 22:39:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:28,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:39:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522006825] [2022-07-20 22:39:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522006825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:28,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:28,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704074548] [2022-07-20 22:39:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:28,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:28,948 INFO L87 Difference]: Start difference. First operand 305 states and 492 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:29,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:29,705 INFO L93 Difference]: Finished difference Result 703 states and 1130 transitions. [2022-07-20 22:39:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:29,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-20 22:39:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:29,707 INFO L225 Difference]: With dead ends: 703 [2022-07-20 22:39:29,708 INFO L226 Difference]: Without dead ends: 419 [2022-07-20 22:39:29,708 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 [2022-07-20 22:39:29,709 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 116 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:29,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 314 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:39:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-20 22:39:29,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 342. [2022-07-20 22:39:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.6275659824046922) internal successors, (555), 341 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 555 transitions. [2022-07-20 22:39:29,717 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 555 transitions. Word has length 94 [2022-07-20 22:39:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 555 transitions. [2022-07-20 22:39:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 555 transitions. [2022-07-20 22:39:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-20 22:39:29,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:29,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:29,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:39:29,719 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash 430223126, now seen corresponding path program 1 times [2022-07-20 22:39:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970134172] [2022-07-20 22:39:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-20 22:39:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:29,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970134172] [2022-07-20 22:39:29,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970134172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:29,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057942969] [2022-07-20 22:39:29,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:29,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:29,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:29,830 INFO L87 Difference]: Start difference. First operand 342 states and 555 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) [2022-07-20 22:39:30,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:30,310 INFO L93 Difference]: Finished difference Result 703 states and 1145 transitions. [2022-07-20 22:39:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:30,311 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 95 [2022-07-20 22:39:30,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:30,312 INFO L225 Difference]: With dead ends: 703 [2022-07-20 22:39:30,312 INFO L226 Difference]: Without dead ends: 382 [2022-07-20 22:39:30,313 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 [2022-07-20 22:39:30,313 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:30,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 479 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-20 22:39:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-20 22:39:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2022-07-20 22:39:30,325 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 95 [2022-07-20 22:39:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:30,325 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2022-07-20 22:39:30,325 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) [2022-07-20 22:39:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2022-07-20 22:39:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-20 22:39:30,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:30,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:39:30,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -174040009, now seen corresponding path program 1 times [2022-07-20 22:39:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632559184] [2022-07-20 22:39:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 22:39:30,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:30,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632559184] [2022-07-20 22:39:30,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632559184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:30,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:30,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:30,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565613336] [2022-07-20 22:39:30,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:30,445 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2022-07-20 22:39:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:31,073 INFO L93 Difference]: Finished difference Result 725 states and 1179 transitions. [2022-07-20 22:39:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 109 [2022-07-20 22:39:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:31,075 INFO L225 Difference]: With dead ends: 725 [2022-07-20 22:39:31,075 INFO L226 Difference]: Without dead ends: 382 [2022-07-20 22:39:31,076 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 [2022-07-20 22:39:31,076 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 40 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:31,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:31,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-20 22:39:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-20 22:39:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6225895316804408) internal successors, (589), 363 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 589 transitions. [2022-07-20 22:39:31,084 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 589 transitions. Word has length 109 [2022-07-20 22:39:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 589 transitions. [2022-07-20 22:39:31,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2022-07-20 22:39:31,084 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 589 transitions. [2022-07-20 22:39:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-20 22:39:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:31,086 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:31,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:39:31,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash -851994560, now seen corresponding path program 1 times [2022-07-20 22:39:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623636379] [2022-07-20 22:39:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 22:39:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623636379] [2022-07-20 22:39:31,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623636379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:31,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:31,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:31,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156517825] [2022-07-20 22:39:31,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:31,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:31,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:31,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:31,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:31,186 INFO L87 Difference]: Start difference. First operand 364 states and 589 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2022-07-20 22:39:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:31,819 INFO L93 Difference]: Finished difference Result 780 states and 1254 transitions. [2022-07-20 22:39:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:31,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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 109 [2022-07-20 22:39:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:31,822 INFO L225 Difference]: With dead ends: 780 [2022-07-20 22:39:31,822 INFO L226 Difference]: Without dead ends: 437 [2022-07-20 22:39:31,822 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 [2022-07-20 22:39:31,823 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:31,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-20 22:39:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-20 22:39:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.606060606060606) internal successors, (583), 363 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 583 transitions. [2022-07-20 22:39:31,831 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 583 transitions. Word has length 109 [2022-07-20 22:39:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:31,832 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 583 transitions. [2022-07-20 22:39:31,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2022-07-20 22:39:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 583 transitions. [2022-07-20 22:39:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 22:39:31,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:31,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:31,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:39:31,833 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:31,834 INFO L85 PathProgramCache]: Analyzing trace with hash 262499795, now seen corresponding path program 1 times [2022-07-20 22:39:31,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:31,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028697964] [2022-07-20 22:39:31,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:31,959 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 22:39:31,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:31,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028697964] [2022-07-20 22:39:31,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028697964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:31,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:31,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:31,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511036276] [2022-07-20 22:39:31,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:31,961 INFO L87 Difference]: Start difference. First operand 364 states and 583 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) [2022-07-20 22:39:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:32,906 INFO L93 Difference]: Finished difference Result 780 states and 1242 transitions. [2022-07-20 22:39:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-20 22:39:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:32,908 INFO L225 Difference]: With dead ends: 780 [2022-07-20 22:39:32,908 INFO L226 Difference]: Without dead ends: 437 [2022-07-20 22:39:32,909 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 [2022-07-20 22:39:32,909 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 139 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:32,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-20 22:39:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-20 22:39:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-20 22:39:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5867768595041323) internal successors, (576), 363 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 576 transitions. [2022-07-20 22:39:32,918 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 576 transitions. Word has length 110 [2022-07-20 22:39:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:32,918 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 576 transitions. [2022-07-20 22:39:32,918 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) [2022-07-20 22:39:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 576 transitions. [2022-07-20 22:39:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-20 22:39:32,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:32,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:32,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:39:32,920 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:32,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1945924334, now seen corresponding path program 1 times [2022-07-20 22:39:32,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:32,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345093099] [2022-07-20 22:39:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:32,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 22:39:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:33,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345093099] [2022-07-20 22:39:33,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345093099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:33,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:33,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249179233] [2022-07-20 22:39:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:33,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:33,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:33,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:33,035 INFO L87 Difference]: Start difference. First operand 364 states and 576 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) [2022-07-20 22:39:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:34,320 INFO L93 Difference]: Finished difference Result 780 states and 1228 transitions. [2022-07-20 22:39:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:34,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-20 22:39:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:34,322 INFO L225 Difference]: With dead ends: 780 [2022-07-20 22:39:34,322 INFO L226 Difference]: Without dead ends: 437 [2022-07-20 22:39:34,323 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 [2022-07-20 22:39:34,323 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:34,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-20 22:39:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-20 22:39:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-20 22:39:34,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5674931129476584) internal successors, (569), 363 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 569 transitions. [2022-07-20 22:39:34,332 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 569 transitions. Word has length 111 [2022-07-20 22:39:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:34,332 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 569 transitions. [2022-07-20 22:39:34,332 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) [2022-07-20 22:39:34,333 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 569 transitions. [2022-07-20 22:39:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 22:39:34,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:34,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:34,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:39:34,334 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -248884466, now seen corresponding path program 1 times [2022-07-20 22:39:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:34,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544001123] [2022-07-20 22:39:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-20 22:39:34,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:34,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544001123] [2022-07-20 22:39:34,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544001123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:34,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:34,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368701275] [2022-07-20 22:39:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:34,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:34,445 INFO L87 Difference]: Start difference. First operand 364 states and 569 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) [2022-07-20 22:39:35,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:35,880 INFO L93 Difference]: Finished difference Result 780 states and 1214 transitions. [2022-07-20 22:39:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-20 22:39:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:35,883 INFO L225 Difference]: With dead ends: 780 [2022-07-20 22:39:35,883 INFO L226 Difference]: Without dead ends: 437 [2022-07-20 22:39:35,883 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 [2022-07-20 22:39:35,884 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-20 22:39:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-20 22:39:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-20 22:39:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5482093663911847) internal successors, (562), 363 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 562 transitions. [2022-07-20 22:39:35,891 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 562 transitions. Word has length 112 [2022-07-20 22:39:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:35,892 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 562 transitions. [2022-07-20 22:39:35,892 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) [2022-07-20 22:39:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 562 transitions. [2022-07-20 22:39:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-20 22:39:35,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:35,893 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] [2022-07-20 22:39:35,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:39:35,893 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:35,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451825, now seen corresponding path program 1 times [2022-07-20 22:39:35,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:35,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450009309] [2022-07-20 22:39:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:35,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:39:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:36,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450009309] [2022-07-20 22:39:36,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450009309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:36,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:36,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683981816] [2022-07-20 22:39:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:36,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:36,014 INFO L87 Difference]: Start difference. First operand 364 states and 562 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:37,177 INFO L93 Difference]: Finished difference Result 797 states and 1232 transitions. [2022-07-20 22:39:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-20 22:39:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:37,180 INFO L225 Difference]: With dead ends: 797 [2022-07-20 22:39:37,180 INFO L226 Difference]: Without dead ends: 454 [2022-07-20 22:39:37,180 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 [2022-07-20 22:39:37,181 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 74 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:37,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 447 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 22:39:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-20 22:39:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 404. [2022-07-20 22:39:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5508684863523574) internal successors, (625), 403 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 625 transitions. [2022-07-20 22:39:37,189 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 625 transitions. Word has length 117 [2022-07-20 22:39:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:37,190 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 625 transitions. [2022-07-20 22:39:37,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 625 transitions. [2022-07-20 22:39:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-20 22:39:37,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:37,192 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] [2022-07-20 22:39:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:39:37,192 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1843292625, now seen corresponding path program 1 times [2022-07-20 22:39:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861768401] [2022-07-20 22:39:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-20 22:39:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861768401] [2022-07-20 22:39:37,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861768401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:37,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:37,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466063412] [2022-07-20 22:39:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:37,303 INFO L87 Difference]: Start difference. First operand 404 states and 625 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:38,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:38,268 INFO L93 Difference]: Finished difference Result 832 states and 1289 transitions. [2022-07-20 22:39:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-20 22:39:38,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:38,270 INFO L225 Difference]: With dead ends: 832 [2022-07-20 22:39:38,270 INFO L226 Difference]: Without dead ends: 449 [2022-07-20 22:39:38,270 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 [2022-07-20 22:39:38,271 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 33 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:38,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 567 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 22:39:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-07-20 22:39:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 428. [2022-07-20 22:39:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5456674473067915) internal successors, (660), 427 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2022-07-20 22:39:38,280 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 117 [2022-07-20 22:39:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:38,280 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2022-07-20 22:39:38,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2022-07-20 22:39:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-20 22:39:38,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:38,282 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] [2022-07-20 22:39:38,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:39:38,282 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:38,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:38,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1399752639, now seen corresponding path program 1 times [2022-07-20 22:39:38,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:38,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662364455] [2022-07-20 22:39:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:38,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:39:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662364455] [2022-07-20 22:39:38,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662364455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:38,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:38,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:38,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828186086] [2022-07-20 22:39:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:38,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:38,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:38,388 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 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) [2022-07-20 22:39:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:39,042 INFO L93 Difference]: Finished difference Result 948 states and 1460 transitions. [2022-07-20 22:39:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 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 125 [2022-07-20 22:39:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:39,045 INFO L225 Difference]: With dead ends: 948 [2022-07-20 22:39:39,045 INFO L226 Difference]: Without dead ends: 541 [2022-07-20 22:39:39,046 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 [2022-07-20 22:39:39,046 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 105 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:39,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 317 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-20 22:39:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 471. [2022-07-20 22:39:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.5510638297872341) internal successors, (729), 470 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 729 transitions. [2022-07-20 22:39:39,055 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 729 transitions. Word has length 125 [2022-07-20 22:39:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:39,056 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 729 transitions. [2022-07-20 22:39:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 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) [2022-07-20 22:39:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 729 transitions. [2022-07-20 22:39:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-20 22:39:39,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:39,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:39:39,058 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:39,058 INFO L85 PathProgramCache]: Analyzing trace with hash 309940842, now seen corresponding path program 1 times [2022-07-20 22:39:39,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:39,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140910095] [2022-07-20 22:39:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:39,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-20 22:39:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:39,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140910095] [2022-07-20 22:39:39,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140910095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:39,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:39,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798288103] [2022-07-20 22:39:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:39,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:39,179 INFO L87 Difference]: Start difference. First operand 471 states and 729 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:40,217 INFO L93 Difference]: Finished difference Result 994 states and 1534 transitions. [2022-07-20 22:39:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-07-20 22:39:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:40,219 INFO L225 Difference]: With dead ends: 994 [2022-07-20 22:39:40,220 INFO L226 Difference]: Without dead ends: 542 [2022-07-20 22:39:40,220 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 [2022-07-20 22:39:40,221 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:40,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 316 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 22:39:40,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-20 22:39:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 473. [2022-07-20 22:39:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5508474576271187) internal successors, (732), 472 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 732 transitions. [2022-07-20 22:39:40,230 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 732 transitions. Word has length 126 [2022-07-20 22:39:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:40,231 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 732 transitions. [2022-07-20 22:39:40,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 732 transitions. [2022-07-20 22:39:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-20 22:39:40,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:40,233 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:40,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:39:40,233 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash -474729006, now seen corresponding path program 1 times [2022-07-20 22:39:40,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:40,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738124212] [2022-07-20 22:39:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-20 22:39:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738124212] [2022-07-20 22:39:40,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738124212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:40,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:40,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:39:40,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85882578] [2022-07-20 22:39:40,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:40,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:39:40,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:40,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:39:40,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:39:40,356 INFO L87 Difference]: Start difference. First operand 473 states and 732 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:41,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:42,282 INFO L93 Difference]: Finished difference Result 935 states and 1452 transitions. [2022-07-20 22:39:42,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:39:42,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 131 [2022-07-20 22:39:42,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:42,284 INFO L225 Difference]: With dead ends: 935 [2022-07-20 22:39:42,284 INFO L226 Difference]: Without dead ends: 483 [2022-07-20 22:39:42,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:39:42,286 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 144 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:42,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 338 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-20 22:39:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-20 22:39:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2022-07-20 22:39:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5446985446985446) internal successors, (743), 481 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 743 transitions. [2022-07-20 22:39:42,295 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 743 transitions. Word has length 131 [2022-07-20 22:39:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:42,295 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 743 transitions. [2022-07-20 22:39:42,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 743 transitions. [2022-07-20 22:39:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-20 22:39:42,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:42,297 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:42,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:39:42,297 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:42,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1091943493, now seen corresponding path program 1 times [2022-07-20 22:39:42,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:42,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876142234] [2022-07-20 22:39:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876142234] [2022-07-20 22:39:42,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876142234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:42,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:42,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756764328] [2022-07-20 22:39:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:42,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:42,396 INFO L87 Difference]: Start difference. First operand 482 states and 743 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:42,939 INFO L93 Difference]: Finished difference Result 1002 states and 1542 transitions. [2022-07-20 22:39:42,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:42,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-20 22:39:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:42,941 INFO L225 Difference]: With dead ends: 1002 [2022-07-20 22:39:42,941 INFO L226 Difference]: Without dead ends: 541 [2022-07-20 22:39:42,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:39:42,943 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 128 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:42,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 354 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-20 22:39:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-20 22:39:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.525987525987526) internal successors, (734), 481 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 734 transitions. [2022-07-20 22:39:42,954 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 734 transitions. Word has length 132 [2022-07-20 22:39:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:42,955 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 734 transitions. [2022-07-20 22:39:42,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 734 transitions. [2022-07-20 22:39:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-20 22:39:42,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:42,956 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] [2022-07-20 22:39:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:39:42,957 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2126146282, now seen corresponding path program 1 times [2022-07-20 22:39:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:42,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016924890] [2022-07-20 22:39:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-20 22:39:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:43,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016924890] [2022-07-20 22:39:43,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016924890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:43,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:43,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16524683] [2022-07-20 22:39:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:43,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:43,063 INFO L87 Difference]: Start difference. First operand 482 states and 734 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:44,440 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 [] [2022-07-20 22:39:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:44,695 INFO L93 Difference]: Finished difference Result 977 states and 1489 transitions. [2022-07-20 22:39:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-20 22:39:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:44,698 INFO L225 Difference]: With dead ends: 977 [2022-07-20 22:39:44,698 INFO L226 Difference]: Without dead ends: 516 [2022-07-20 22:39:44,699 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 [2022-07-20 22:39:44,699 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:44,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-20 22:39:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-20 22:39:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2022-07-20 22:39:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.523908523908524) internal successors, (733), 481 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 733 transitions. [2022-07-20 22:39:44,711 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 733 transitions. Word has length 138 [2022-07-20 22:39:44,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:44,711 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 733 transitions. [2022-07-20 22:39:44,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 733 transitions. [2022-07-20 22:39:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-20 22:39:44,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:44,713 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] [2022-07-20 22:39:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:39:44,714 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:44,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1366121880, now seen corresponding path program 1 times [2022-07-20 22:39:44,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:44,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574217944] [2022-07-20 22:39:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:44,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574217944] [2022-07-20 22:39:44,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574217944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:44,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:44,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389086124] [2022-07-20 22:39:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:44,822 INFO L87 Difference]: Start difference. First operand 482 states and 733 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:46,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:39:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:46,724 INFO L93 Difference]: Finished difference Result 1002 states and 1522 transitions. [2022-07-20 22:39:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-20 22:39:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:46,727 INFO L225 Difference]: With dead ends: 1002 [2022-07-20 22:39:46,727 INFO L226 Difference]: Without dead ends: 541 [2022-07-20 22:39:46,728 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 [2022-07-20 22:39:46,728 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 115 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:46,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 364 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-20 22:39:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-20 22:39:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-20 22:39:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5093555093555093) internal successors, (726), 481 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) [2022-07-20 22:39:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 726 transitions. [2022-07-20 22:39:46,739 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 726 transitions. Word has length 139 [2022-07-20 22:39:46,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:46,739 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 726 transitions. [2022-07-20 22:39:46,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:46,739 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 726 transitions. [2022-07-20 22:39:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-20 22:39:46,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:46,741 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] [2022-07-20 22:39:46,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:39:46,741 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:46,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 984886832, now seen corresponding path program 1 times [2022-07-20 22:39:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495710281] [2022-07-20 22:39:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-20 22:39:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:46,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495710281] [2022-07-20 22:39:46,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495710281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:46,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:46,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088573071] [2022-07-20 22:39:46,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:46,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:46,857 INFO L87 Difference]: Start difference. First operand 482 states and 726 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:47,888 INFO L93 Difference]: Finished difference Result 975 states and 1471 transitions. [2022-07-20 22:39:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:47,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-20 22:39:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:47,890 INFO L225 Difference]: With dead ends: 975 [2022-07-20 22:39:47,890 INFO L226 Difference]: Without dead ends: 514 [2022-07-20 22:39:47,891 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 [2022-07-20 22:39:47,892 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 60 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:47,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-20 22:39:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-20 22:39:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 482. [2022-07-20 22:39:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5072765072765073) internal successors, (725), 481 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:47,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 725 transitions. [2022-07-20 22:39:47,903 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 725 transitions. Word has length 139 [2022-07-20 22:39:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:47,903 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 725 transitions. [2022-07-20 22:39:47,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 725 transitions. [2022-07-20 22:39:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-20 22:39:47,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:47,905 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] [2022-07-20 22:39:47,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 22:39:47,905 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash 309390678, now seen corresponding path program 1 times [2022-07-20 22:39:47,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088891913] [2022-07-20 22:39:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:47,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-20 22:39:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088891913] [2022-07-20 22:39:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088891913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:48,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:48,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248116485] [2022-07-20 22:39:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:48,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:48,022 INFO L87 Difference]: Start difference. First operand 482 states and 725 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:48,610 INFO L93 Difference]: Finished difference Result 982 states and 1481 transitions. [2022-07-20 22:39:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-20 22:39:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:48,612 INFO L225 Difference]: With dead ends: 982 [2022-07-20 22:39:48,612 INFO L226 Difference]: Without dead ends: 521 [2022-07-20 22:39:48,613 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 [2022-07-20 22:39:48,613 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 27 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:48,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 555 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-20 22:39:48,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 508. [2022-07-20 22:39:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5029585798816567) internal successors, (762), 507 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 762 transitions. [2022-07-20 22:39:48,637 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 762 transitions. Word has length 139 [2022-07-20 22:39:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:48,637 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 762 transitions. [2022-07-20 22:39:48,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 762 transitions. [2022-07-20 22:39:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-20 22:39:48,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:48,639 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 22:39:48,640 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1970724841, now seen corresponding path program 1 times [2022-07-20 22:39:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:48,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813255371] [2022-07-20 22:39:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-20 22:39:48,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:48,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813255371] [2022-07-20 22:39:48,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813255371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:48,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:48,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:48,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766091068] [2022-07-20 22:39:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:48,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:48,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:48,755 INFO L87 Difference]: Start difference. First operand 508 states and 762 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) [2022-07-20 22:39:49,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:49,266 INFO L93 Difference]: Finished difference Result 1096 states and 1645 transitions. [2022-07-20 22:39:49,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:49,266 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 [2022-07-20 22:39:49,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:49,268 INFO L225 Difference]: With dead ends: 1096 [2022-07-20 22:39:49,268 INFO L226 Difference]: Without dead ends: 609 [2022-07-20 22:39:49,268 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 [2022-07-20 22:39:49,269 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 111 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:49,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 354 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:39:49,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-20 22:39:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 536. [2022-07-20 22:39:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4897196261682244) internal successors, (797), 535 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 797 transitions. [2022-07-20 22:39:49,282 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 797 transitions. Word has length 141 [2022-07-20 22:39:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:49,283 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 797 transitions. [2022-07-20 22:39:49,283 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) [2022-07-20 22:39:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 797 transitions. [2022-07-20 22:39:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-20 22:39:49,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:49,285 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 22:39:49,285 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 155364701, now seen corresponding path program 1 times [2022-07-20 22:39:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:49,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116266708] [2022-07-20 22:39:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-20 22:39:49,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116266708] [2022-07-20 22:39:49,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116266708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:49,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:49,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997769057] [2022-07-20 22:39:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:49,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:49,406 INFO L87 Difference]: Start difference. First operand 536 states and 797 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) [2022-07-20 22:39:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:50,263 INFO L93 Difference]: Finished difference Result 1075 states and 1600 transitions. [2022-07-20 22:39:50,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:50,264 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 [2022-07-20 22:39:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:50,265 INFO L225 Difference]: With dead ends: 1075 [2022-07-20 22:39:50,265 INFO L226 Difference]: Without dead ends: 560 [2022-07-20 22:39:50,266 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 [2022-07-20 22:39:50,267 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:50,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-20 22:39:50,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-20 22:39:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-20 22:39:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4878504672897197) internal successors, (796), 535 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 796 transitions. [2022-07-20 22:39:50,278 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 796 transitions. Word has length 142 [2022-07-20 22:39:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:50,278 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 796 transitions. [2022-07-20 22:39:50,278 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) [2022-07-20 22:39:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 796 transitions. [2022-07-20 22:39:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-20 22:39:50,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:50,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:50,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-20 22:39:50,280 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -773365661, now seen corresponding path program 1 times [2022-07-20 22:39:50,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764479776] [2022-07-20 22:39:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:50,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:50,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:50,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764479776] [2022-07-20 22:39:50,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764479776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:50,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:50,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340249233] [2022-07-20 22:39:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:50,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:50,430 INFO L87 Difference]: Start difference. First operand 536 states and 796 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:50,881 INFO L93 Difference]: Finished difference Result 1075 states and 1598 transitions. [2022-07-20 22:39:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-07-20 22:39:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:50,883 INFO L225 Difference]: With dead ends: 1075 [2022-07-20 22:39:50,883 INFO L226 Difference]: Without dead ends: 560 [2022-07-20 22:39:50,884 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 [2022-07-20 22:39:50,884 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 53 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:50,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 22:39:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-20 22:39:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-20 22:39:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.485981308411215) internal successors, (795), 535 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 795 transitions. [2022-07-20 22:39:50,897 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 795 transitions. Word has length 145 [2022-07-20 22:39:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:50,897 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 795 transitions. [2022-07-20 22:39:50,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 795 transitions. [2022-07-20 22:39:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-20 22:39:50,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:50,899 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-20 22:39:50,899 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1914296137, now seen corresponding path program 1 times [2022-07-20 22:39:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223345228] [2022-07-20 22:39:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:50,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:51,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223345228] [2022-07-20 22:39:51,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223345228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:51,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:51,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:51,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91123020] [2022-07-20 22:39:51,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:51,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:51,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:51,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:51,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:51,012 INFO L87 Difference]: Start difference. First operand 536 states and 795 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) [2022-07-20 22:39:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:51,689 INFO L93 Difference]: Finished difference Result 1110 states and 1646 transitions. [2022-07-20 22:39:51,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:51,689 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 146 [2022-07-20 22:39:51,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:51,691 INFO L225 Difference]: With dead ends: 1110 [2022-07-20 22:39:51,691 INFO L226 Difference]: Without dead ends: 595 [2022-07-20 22:39:51,692 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 [2022-07-20 22:39:51,692 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 112 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:51,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 22:39:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-20 22:39:51,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 536. [2022-07-20 22:39:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4710280373831777) internal successors, (787), 535 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 787 transitions. [2022-07-20 22:39:51,706 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 787 transitions. Word has length 146 [2022-07-20 22:39:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:51,706 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 787 transitions. [2022-07-20 22:39:51,706 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) [2022-07-20 22:39:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 787 transitions. [2022-07-20 22:39:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-20 22:39:51,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:51,708 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-20 22:39:51,708 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 436551973, now seen corresponding path program 1 times [2022-07-20 22:39:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:51,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990823180] [2022-07-20 22:39:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-20 22:39:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990823180] [2022-07-20 22:39:51,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990823180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:51,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:51,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516323654] [2022-07-20 22:39:51,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:51,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:51,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:51,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:51,831 INFO L87 Difference]: Start difference. First operand 536 states and 787 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:52,911 INFO L93 Difference]: Finished difference Result 1073 states and 1577 transitions. [2022-07-20 22:39:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-20 22:39:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:52,913 INFO L225 Difference]: With dead ends: 1073 [2022-07-20 22:39:52,913 INFO L226 Difference]: Without dead ends: 558 [2022-07-20 22:39:52,914 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 [2022-07-20 22:39:52,915 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 41 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:52,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 503 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 22:39:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-20 22:39:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-20 22:39:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.469158878504673) internal successors, (786), 535 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 786 transitions. [2022-07-20 22:39:52,928 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 786 transitions. Word has length 148 [2022-07-20 22:39:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:52,928 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 786 transitions. [2022-07-20 22:39:52,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 786 transitions. [2022-07-20 22:39:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-20 22:39:52,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:52,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:52,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-20 22:39:52,930 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1682736421, now seen corresponding path program 1 times [2022-07-20 22:39:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:52,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244388238] [2022-07-20 22:39:52,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:53,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244388238] [2022-07-20 22:39:53,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244388238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:53,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:53,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908266429] [2022-07-20 22:39:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:53,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:53,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:53,056 INFO L87 Difference]: Start difference. First operand 536 states and 786 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) [2022-07-20 22:39:54,442 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 [] [2022-07-20 22:39:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:54,713 INFO L93 Difference]: Finished difference Result 1152 states and 1692 transitions. [2022-07-20 22:39:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:54,714 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 148 [2022-07-20 22:39:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:54,716 INFO L225 Difference]: With dead ends: 1152 [2022-07-20 22:39:54,716 INFO L226 Difference]: Without dead ends: 637 [2022-07-20 22:39:54,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:39:54,717 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:54,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 338 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-20 22:39:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-20 22:39:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 569. [2022-07-20 22:39:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4630281690140845) internal successors, (831), 568 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 831 transitions. [2022-07-20 22:39:54,732 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 831 transitions. Word has length 148 [2022-07-20 22:39:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:54,732 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 831 transitions. [2022-07-20 22:39:54,733 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) [2022-07-20 22:39:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 831 transitions. [2022-07-20 22:39:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-20 22:39:54,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:54,734 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-20 22:39:54,735 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:54,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1171061050, now seen corresponding path program 1 times [2022-07-20 22:39:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:54,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510983628] [2022-07-20 22:39:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-20 22:39:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:54,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510983628] [2022-07-20 22:39:54,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510983628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:54,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:54,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732072528] [2022-07-20 22:39:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:54,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:54,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:54,876 INFO L87 Difference]: Start difference. First operand 569 states and 831 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:55,450 INFO L93 Difference]: Finished difference Result 1176 states and 1718 transitions. [2022-07-20 22:39:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-20 22:39:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:55,453 INFO L225 Difference]: With dead ends: 1176 [2022-07-20 22:39:55,453 INFO L226 Difference]: Without dead ends: 628 [2022-07-20 22:39:55,454 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 [2022-07-20 22:39:55,454 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:55,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-20 22:39:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-20 22:39:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.454225352112676) internal successors, (826), 568 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 826 transitions. [2022-07-20 22:39:55,468 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 826 transitions. Word has length 149 [2022-07-20 22:39:55,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:55,469 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 826 transitions. [2022-07-20 22:39:55,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:55,469 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 826 transitions. [2022-07-20 22:39:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-20 22:39:55,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:55,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:55,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-20 22:39:55,471 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2111739750, now seen corresponding path program 1 times [2022-07-20 22:39:55,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:55,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403572614] [2022-07-20 22:39:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:55,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-20 22:39:55,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:55,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403572614] [2022-07-20 22:39:55,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403572614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:55,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:55,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860078166] [2022-07-20 22:39:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:55,578 INFO L87 Difference]: Start difference. First operand 569 states and 826 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:56,183 INFO L93 Difference]: Finished difference Result 1176 states and 1708 transitions. [2022-07-20 22:39:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:56,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-20 22:39:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:56,185 INFO L225 Difference]: With dead ends: 1176 [2022-07-20 22:39:56,185 INFO L226 Difference]: Without dead ends: 628 [2022-07-20 22:39:56,186 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 [2022-07-20 22:39:56,186 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:56,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-20 22:39:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-20 22:39:56,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4454225352112675) internal successors, (821), 568 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 821 transitions. [2022-07-20 22:39:56,201 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 821 transitions. Word has length 149 [2022-07-20 22:39:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:56,201 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 821 transitions. [2022-07-20 22:39:56,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:56,201 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 821 transitions. [2022-07-20 22:39:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-20 22:39:56,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:56,203 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:56,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-20 22:39:56,203 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash 111887274, now seen corresponding path program 1 times [2022-07-20 22:39:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:56,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499518521] [2022-07-20 22:39:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 22:39:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:56,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499518521] [2022-07-20 22:39:56,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499518521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:56,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:56,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251055102] [2022-07-20 22:39:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:56,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:56,309 INFO L87 Difference]: Start difference. First operand 569 states and 821 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:57,492 INFO L93 Difference]: Finished difference Result 1176 states and 1698 transitions. [2022-07-20 22:39:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-07-20 22:39:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:57,494 INFO L225 Difference]: With dead ends: 1176 [2022-07-20 22:39:57,494 INFO L226 Difference]: Without dead ends: 628 [2022-07-20 22:39:57,494 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 [2022-07-20 22:39:57,495 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 97 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:57,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 338 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-20 22:39:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-20 22:39:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 566. [2022-07-20 22:39:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4424778761061947) internal successors, (815), 565 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 815 transitions. [2022-07-20 22:39:57,509 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 815 transitions. Word has length 158 [2022-07-20 22:39:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:57,510 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 815 transitions. [2022-07-20 22:39:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 815 transitions. [2022-07-20 22:39:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-20 22:39:57,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:57,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:57,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-20 22:39:57,512 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash 138370680, now seen corresponding path program 1 times [2022-07-20 22:39:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:57,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570243831] [2022-07-20 22:39:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-20 22:39:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570243831] [2022-07-20 22:39:57,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570243831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:57,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:57,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:39:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208725814] [2022-07-20 22:39:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:39:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:39:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:39:57,625 INFO L87 Difference]: Start difference. First operand 566 states and 815 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2022-07-20 22:39:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:57,669 INFO L93 Difference]: Finished difference Result 1650 states and 2389 transitions. [2022-07-20 22:39:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:39:57,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 166 [2022-07-20 22:39:57,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:57,673 INFO L225 Difference]: With dead ends: 1650 [2022-07-20 22:39:57,673 INFO L226 Difference]: Without dead ends: 1105 [2022-07-20 22:39:57,674 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 [2022-07-20 22:39:57,674 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:57,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 557 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:39:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-20 22:39:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-07-20 22:39:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.4420289855072463) internal successors, (1592), 1104 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1592 transitions. [2022-07-20 22:39:57,712 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1592 transitions. Word has length 166 [2022-07-20 22:39:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:57,712 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1592 transitions. [2022-07-20 22:39:57,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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) [2022-07-20 22:39:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1592 transitions. [2022-07-20 22:39:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-20 22:39:57,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:57,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:57,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-20 22:39:57,715 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:57,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash 234885032, now seen corresponding path program 1 times [2022-07-20 22:39:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:57,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665524146] [2022-07-20 22:39:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 22:39:57,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665524146] [2022-07-20 22:39:57,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665524146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:57,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:57,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:39:57,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34227785] [2022-07-20 22:39:57,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:57,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:39:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:39:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:39:57,825 INFO L87 Difference]: Start difference. First operand 1105 states and 1592 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) [2022-07-20 22:39:57,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:57,876 INFO L93 Difference]: Finished difference Result 2693 states and 3889 transitions. [2022-07-20 22:39:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:39:57,877 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 167 [2022-07-20 22:39:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:57,882 INFO L225 Difference]: With dead ends: 2693 [2022-07-20 22:39:57,882 INFO L226 Difference]: Without dead ends: 1609 [2022-07-20 22:39:57,883 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 [2022-07-20 22:39:57,884 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:57,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:39:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-07-20 22:39:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1607. [2022-07-20 22:39:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.4414694894146949) internal successors, (2315), 1606 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2315 transitions. [2022-07-20 22:39:57,938 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2315 transitions. Word has length 167 [2022-07-20 22:39:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:57,939 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2315 transitions. [2022-07-20 22:39:57,939 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) [2022-07-20 22:39:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2315 transitions. [2022-07-20 22:39:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 22:39:57,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:57,942 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-20 22:39:57,942 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1802673043, now seen corresponding path program 1 times [2022-07-20 22:39:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091523468] [2022-07-20 22:39:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 22:39:58,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091523468] [2022-07-20 22:39:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091523468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:58,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:58,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:39:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797754224] [2022-07-20 22:39:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:58,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:39:58,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:58,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:39:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:39:58,045 INFO L87 Difference]: Start difference. First operand 1607 states and 2315 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:58,106 INFO L93 Difference]: Finished difference Result 3688 states and 5325 transitions. [2022-07-20 22:39:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:39:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-20 22:39:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:58,112 INFO L225 Difference]: With dead ends: 3688 [2022-07-20 22:39:58,112 INFO L226 Difference]: Without dead ends: 2102 [2022-07-20 22:39:58,114 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 [2022-07-20 22:39:58,115 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:58,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:39:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-07-20 22:39:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2098. [2022-07-20 22:39:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 1.4430138292799237) internal successors, (3026), 2097 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3026 transitions. [2022-07-20 22:39:58,176 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3026 transitions. Word has length 168 [2022-07-20 22:39:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:58,177 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3026 transitions. [2022-07-20 22:39:58,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3026 transitions. [2022-07-20 22:39:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 22:39:58,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:58,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-20 22:39:58,181 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:58,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167445, now seen corresponding path program 1 times [2022-07-20 22:39:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912904312] [2022-07-20 22:39:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-20 22:39:58,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912904312] [2022-07-20 22:39:58,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912904312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:58,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:58,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:39:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851979202] [2022-07-20 22:39:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:58,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:39:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:39:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:39:58,276 INFO L87 Difference]: Start difference. First operand 2098 states and 3026 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:58,351 INFO L93 Difference]: Finished difference Result 4202 states and 6064 transitions. [2022-07-20 22:39:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:39:58,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-20 22:39:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:58,356 INFO L225 Difference]: With dead ends: 4202 [2022-07-20 22:39:58,356 INFO L226 Difference]: Without dead ends: 2125 [2022-07-20 22:39:58,357 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 [2022-07-20 22:39:58,358 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:58,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 404 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:39:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-07-20 22:39:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2022-07-20 22:39:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.4411487758945387) internal successors, (3061), 2124 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3061 transitions. [2022-07-20 22:39:58,431 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3061 transitions. Word has length 168 [2022-07-20 22:39:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3061 transitions. [2022-07-20 22:39:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3061 transitions. [2022-07-20 22:39:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-20 22:39:58,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:58,436 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:58,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-20 22:39:58,436 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash -995674217, now seen corresponding path program 1 times [2022-07-20 22:39:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:58,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169466127] [2022-07-20 22:39:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:58,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-20 22:39:58,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169466127] [2022-07-20 22:39:58,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169466127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:58,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:58,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:39:58,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820640673] [2022-07-20 22:39:58,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:39:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:39:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:39:58,528 INFO L87 Difference]: Start difference. First operand 2125 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:58,576 INFO L93 Difference]: Finished difference Result 4231 states and 6100 transitions. [2022-07-20 22:39:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:39:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-07-20 22:39:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:58,592 INFO L225 Difference]: With dead ends: 4231 [2022-07-20 22:39:58,593 INFO L226 Difference]: Without dead ends: 2127 [2022-07-20 22:39:58,595 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 [2022-07-20 22:39:58,595 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:58,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 383 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:39:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-07-20 22:39:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-07-20 22:39:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4407337723424272) internal successors, (3063), 2126 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3063 transitions. [2022-07-20 22:39:58,670 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3063 transitions. Word has length 168 [2022-07-20 22:39:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:58,672 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3063 transitions. [2022-07-20 22:39:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3063 transitions. [2022-07-20 22:39:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-20 22:39:58,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:58,675 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:39:58,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-20 22:39:58,675 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:58,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1102630147, now seen corresponding path program 1 times [2022-07-20 22:39:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:58,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801536989] [2022-07-20 22:39:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:58,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-20 22:39:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801536989] [2022-07-20 22:39:58,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801536989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:58,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:58,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:58,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131171717] [2022-07-20 22:39:58,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:58,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:58,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:58,797 INFO L87 Difference]: Start difference. First operand 2127 states and 3063 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:39:59,497 INFO L93 Difference]: Finished difference Result 4616 states and 6625 transitions. [2022-07-20 22:39:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:39:59,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-07-20 22:39:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:39:59,501 INFO L225 Difference]: With dead ends: 4616 [2022-07-20 22:39:59,501 INFO L226 Difference]: Without dead ends: 2512 [2022-07-20 22:39:59,503 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 [2022-07-20 22:39:59,504 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:39:59,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 346 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:39:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-07-20 22:39:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2247. [2022-07-20 22:39:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4305431878895816) internal successors, (3213), 2246 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3213 transitions. [2022-07-20 22:39:59,559 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3213 transitions. Word has length 179 [2022-07-20 22:39:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:39:59,559 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3213 transitions. [2022-07-20 22:39:59,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:39:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3213 transitions. [2022-07-20 22:39:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-20 22:39:59,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:39:59,562 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:39:59,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-20 22:39:59,563 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:39:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:39:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1645851351, now seen corresponding path program 1 times [2022-07-20 22:39:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:39:59,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655836944] [2022-07-20 22:39:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:39:59,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:39:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:39:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-20 22:39:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:39:59,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655836944] [2022-07-20 22:39:59,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655836944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:39:59,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:39:59,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:39:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272009338] [2022-07-20 22:39:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:39:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:39:59,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:39:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:39:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:39:59,673 INFO L87 Difference]: Start difference. First operand 2247 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:40:00,333 INFO L93 Difference]: Finished difference Result 4556 states and 6513 transitions. [2022-07-20 22:40:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:40:00,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 180 [2022-07-20 22:40:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:40:00,337 INFO L225 Difference]: With dead ends: 4556 [2022-07-20 22:40:00,337 INFO L226 Difference]: Without dead ends: 2332 [2022-07-20 22:40:00,339 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 [2022-07-20 22:40:00,341 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 22:40:00,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 540 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 22:40:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2022-07-20 22:40:00,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2247. [2022-07-20 22:40:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.429207479964381) internal successors, (3210), 2246 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:00,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3210 transitions. [2022-07-20 22:40:00,392 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3210 transitions. Word has length 180 [2022-07-20 22:40:00,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:40:00,392 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3210 transitions. [2022-07-20 22:40:00,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3210 transitions. [2022-07-20 22:40:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-20 22:40:00,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:40:00,396 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 22:40:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-20 22:40:00,396 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:40:00,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:40:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1897594940, now seen corresponding path program 1 times [2022-07-20 22:40:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:40:00,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678821411] [2022-07-20 22:40:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:00,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:40:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-20 22:40:00,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:40:00,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678821411] [2022-07-20 22:40:00,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678821411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:40:00,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:40:00,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:40:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861354958] [2022-07-20 22:40:00,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:40:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:40:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:40:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:40:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:40:00,536 INFO L87 Difference]: Start difference. First operand 2247 states and 3210 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:40:01,138 INFO L93 Difference]: Finished difference Result 4688 states and 6683 transitions. [2022-07-20 22:40:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:40:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 183 [2022-07-20 22:40:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:40:01,143 INFO L225 Difference]: With dead ends: 4688 [2022-07-20 22:40:01,143 INFO L226 Difference]: Without dead ends: 2464 [2022-07-20 22:40:01,145 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 [2022-07-20 22:40:01,145 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 105 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 22:40:01,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 342 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 22:40:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-20 22:40:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-20 22:40:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4158504007123776) internal successors, (3180), 2246 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3180 transitions. [2022-07-20 22:40:01,193 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3180 transitions. Word has length 183 [2022-07-20 22:40:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:40:01,194 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3180 transitions. [2022-07-20 22:40:01,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3180 transitions. [2022-07-20 22:40:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-20 22:40:01,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:40:01,197 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:40:01,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-20 22:40:01,197 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:40:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:40:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1707338316, now seen corresponding path program 1 times [2022-07-20 22:40:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:40:01,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115735851] [2022-07-20 22:40:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:40:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-20 22:40:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:40:01,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115735851] [2022-07-20 22:40:01,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115735851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:40:01,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:40:01,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:40:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166757752] [2022-07-20 22:40:01,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:40:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:40:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:40:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:40:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:40:01,330 INFO L87 Difference]: Start difference. First operand 2247 states and 3180 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:40:02,449 INFO L93 Difference]: Finished difference Result 4526 states and 6402 transitions. [2022-07-20 22:40:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:40:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 189 [2022-07-20 22:40:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:40:02,453 INFO L225 Difference]: With dead ends: 4526 [2022-07-20 22:40:02,453 INFO L226 Difference]: Without dead ends: 2302 [2022-07-20 22:40:02,454 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 [2022-07-20 22:40:02,455 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 43 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:40:02,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 560 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 22:40:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-20 22:40:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2247. [2022-07-20 22:40:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4145146927871772) internal successors, (3177), 2246 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3177 transitions. [2022-07-20 22:40:02,506 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3177 transitions. Word has length 189 [2022-07-20 22:40:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:40:02,507 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3177 transitions. [2022-07-20 22:40:02,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3177 transitions. [2022-07-20 22:40:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-20 22:40:02,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:40:02,510 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, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:40:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-20 22:40:02,510 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:40:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:40:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1760759993, now seen corresponding path program 1 times [2022-07-20 22:40:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:40:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859577328] [2022-07-20 22:40:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:02,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:40:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-20 22:40:02,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:40:02,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859577328] [2022-07-20 22:40:02,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859577328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:40:02,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:40:02,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:40:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90960247] [2022-07-20 22:40:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:40:02,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:40:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:40:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:40:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:40:02,664 INFO L87 Difference]: Start difference. First operand 2247 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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) [2022-07-20 22:40:04,319 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 [] [2022-07-20 22:40:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:40:04,609 INFO L93 Difference]: Finished difference Result 4688 states and 6617 transitions. [2022-07-20 22:40:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:40:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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 189 [2022-07-20 22:40:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:40:04,614 INFO L225 Difference]: With dead ends: 4688 [2022-07-20 22:40:04,615 INFO L226 Difference]: Without dead ends: 2464 [2022-07-20 22:40:04,617 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 [2022-07-20 22:40:04,617 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-20 22:40:04,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-20 22:40:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-20 22:40:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-20 22:40:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.404274265360641) internal successors, (3154), 2246 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3154 transitions. [2022-07-20 22:40:04,657 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3154 transitions. Word has length 189 [2022-07-20 22:40:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:40:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3154 transitions. [2022-07-20 22:40:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 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) [2022-07-20 22:40:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3154 transitions. [2022-07-20 22:40:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 22:40:04,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:40:04,661 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] [2022-07-20 22:40:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-20 22:40:04,661 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:40:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:40:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash 867563374, now seen corresponding path program 1 times [2022-07-20 22:40:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:40:04,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361937924] [2022-07-20 22:40:04,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:04,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:40:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-20 22:40:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:40:05,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361937924] [2022-07-20 22:40:05,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361937924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:40:05,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:40:05,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 22:40:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16229819] [2022-07-20 22:40:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:40:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 22:40:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:40:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 22:40:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:40:05,147 INFO L87 Difference]: Start difference. First operand 2247 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2022-07-20 22:40:06,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:40:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:40:07,462 INFO L93 Difference]: Finished difference Result 4491 states and 6304 transitions. [2022-07-20 22:40:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 22:40:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 191 [2022-07-20 22:40:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:40:07,466 INFO L225 Difference]: With dead ends: 4491 [2022-07-20 22:40:07,466 INFO L226 Difference]: Without dead ends: 2247 [2022-07-20 22:40:07,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-20 22:40:07,468 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:40:07,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 647 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:40:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-07-20 22:40:07,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2247. [2022-07-20 22:40:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4038290293855744) internal successors, (3153), 2246 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:40:07,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3153 transitions. [2022-07-20 22:40:07,520 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3153 transitions. Word has length 191 [2022-07-20 22:40:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:40:07,521 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3153 transitions. [2022-07-20 22:40:07,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2022-07-20 22:40:07,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3153 transitions. [2022-07-20 22:40:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-20 22:40:07,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:40:07,524 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] [2022-07-20 22:40:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-20 22:40:07,524 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:40:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:40:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 990845040, now seen corresponding path program 1 times [2022-07-20 22:40:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:40:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309609781] [2022-07-20 22:40:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:07,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:40:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 26 proven. 183 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-20 22:40:09,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:40:09,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309609781] [2022-07-20 22:40:09,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309609781] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 22:40:09,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844984546] [2022-07-20 22:40:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:40:09,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 22:40:09,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:40:09,393 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) [2022-07-20 22:40:09,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 22:40:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:40:10,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-20 22:40:10,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:40:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:12,120 INFO L356 Elim1Store]: treesize reduction 1040, result has 8.0 percent of original size [2022-07-20 22:40:12,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 31556846 treesize of output 6795388 [2022-07-20 22:40:13,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:13,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:14,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:40:14,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:32,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:41:40,990 INFO L244 Elim1Store]: Index analysis took 8628 ms