./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.09.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.09.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 8da39e66c08628aa90e95213e006a92eb0d5a63143d71cc4cdb2dcfa95ff1896 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:03:45,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:03:45,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:03:45,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:03:45,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:03:45,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:03:45,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:03:45,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:03:45,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:03:45,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:03:45,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:03:45,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:03:45,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:03:45,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:03:45,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:03:45,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:03:45,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:03:45,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:03:45,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:03:45,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:03:45,103 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:03:45,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:03:45,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:03:45,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:03:45,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:03:45,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:03:45,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:03:45,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:03:45,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:03:45,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:03:45,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:03:45,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:03:45,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:03:45,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:03:45,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:03:45,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:03:45,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:03:45,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:03:45,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:03:45,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:03:45,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:03:45,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:03:45,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:03:45,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:03:45,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:03:45,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:03:45,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:03:45,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:03:45,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:03:45,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:03:45,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:03:45,129 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:03:45,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:03:45,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:03:45,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:03:45,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:03:45,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:03:45,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:03:45,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:03:45,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:03:45,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:03:45,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:03:45,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:03:45,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:03:45,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:03:45,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:03:45,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:03:45,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:45,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:03:45,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:03:45,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:03:45,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:03:45,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:03:45,134 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:03:45,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:03:45,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:03:45,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8da39e66c08628aa90e95213e006a92eb0d5a63143d71cc4cdb2dcfa95ff1896 [2022-07-19 11:03:45,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:03:45,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:03:45,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:03:45,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:03:45,352 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:03:45,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.09.i.cil-2.c [2022-07-19 11:03:45,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07d33405/1a9c87111b3245e0b8b644ccca1987f5/FLAG78e111098 [2022-07-19 11:03:45,783 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:03:45,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.09.i.cil-2.c [2022-07-19 11:03:45,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07d33405/1a9c87111b3245e0b8b644ccca1987f5/FLAG78e111098 [2022-07-19 11:03:46,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07d33405/1a9c87111b3245e0b8b644ccca1987f5 [2022-07-19 11:03:46,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:03:46,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:03:46,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:46,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:03:46,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:03:46,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68eb440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46, skipping insertion in model container [2022-07-19 11:03:46,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:03:46,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:03:46,485 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.09.i.cil-2.c[74369,74382] [2022-07-19 11:03:46,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:46,499 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:03:46,563 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.09.i.cil-2.c[74369,74382] [2022-07-19 11:03:46,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:03:46,576 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:03:46,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46 WrapperNode [2022-07-19 11:03:46,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:03:46,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:46,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:03:46,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:03:46,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,620 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-07-19 11:03:46,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:03:46,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:03:46,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:03:46,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:03:46,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:03:46,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:03:46,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:03:46,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:03:46,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (1/1) ... [2022-07-19 11:03:46,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:03:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:03:46,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 11:03:46,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 11:03:46,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:03:46,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:03:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:03:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:03:46,905 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:03:46,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:03:46,917 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:03:47,856 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:03:47,857 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:03:47,857 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:03:47,862 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:03:47,862 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:03:47,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:47 BoogieIcfgContainer [2022-07-19 11:03:47,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:03:47,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:03:47,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:03:47,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:03:47,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:03:46" (1/3) ... [2022-07-19 11:03:47,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60319057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:47, skipping insertion in model container [2022-07-19 11:03:47,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:03:46" (2/3) ... [2022-07-19 11:03:47,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60319057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:03:47, skipping insertion in model container [2022-07-19 11:03:47,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:03:47" (3/3) ... [2022-07-19 11:03:47,883 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.09.i.cil-2.c [2022-07-19 11:03:47,893 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:03:47,902 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:03:47,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:03:47,961 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@24de048f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63a54ee0 [2022-07-19 11:03:47,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:03:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-19 11:03:47,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:47,979 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] [2022-07-19 11:03:47,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:47,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash -442385418, now seen corresponding path program 1 times [2022-07-19 11:03:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866744906] [2022-07-19 11:03:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:48,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866744906] [2022-07-19 11:03:48,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866744906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:48,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:48,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:48,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770406372] [2022-07-19 11:03:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:48,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:48,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:48,471 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:49,290 INFO L93 Difference]: Finished difference Result 421 states and 717 transitions. [2022-07-19 11:03:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:49,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-19 11:03:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:49,302 INFO L225 Difference]: With dead ends: 421 [2022-07-19 11:03:49,303 INFO L226 Difference]: Without dead ends: 256 [2022-07-19 11:03:49,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:49,310 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 169 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:49,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 439 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-19 11:03:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 165. [2022-07-19 11:03:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 164 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions. [2022-07-19 11:03:49,354 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 37 [2022-07-19 11:03:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:49,354 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 260 transitions. [2022-07-19 11:03:49,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions. [2022-07-19 11:03:49,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 11:03:49,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:49,356 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] [2022-07-19 11:03:49,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:03:49,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1559591930, now seen corresponding path program 1 times [2022-07-19 11:03:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:49,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193883571] [2022-07-19 11:03:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:49,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193883571] [2022-07-19 11:03:49,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193883571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:49,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:49,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488451435] [2022-07-19 11:03:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:49,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:49,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:49,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:49,453 INFO L87 Difference]: Start difference. First operand 165 states and 260 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:50,004 INFO L93 Difference]: Finished difference Result 348 states and 547 transitions. [2022-07-19 11:03:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:50,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-19 11:03:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:50,006 INFO L225 Difference]: With dead ends: 348 [2022-07-19 11:03:50,006 INFO L226 Difference]: Without dead ends: 193 [2022-07-19 11:03:50,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:50,007 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:50,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-19 11:03:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2022-07-19 11:03:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.5942857142857143) internal successors, (279), 175 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 279 transitions. [2022-07-19 11:03:50,016 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 279 transitions. Word has length 38 [2022-07-19 11:03:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:50,016 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 279 transitions. [2022-07-19 11:03:50,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:50,016 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 279 transitions. [2022-07-19 11:03:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-19 11:03:50,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:50,018 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] [2022-07-19 11:03:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:03:50,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 103815440, now seen corresponding path program 1 times [2022-07-19 11:03:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:50,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751026151] [2022-07-19 11:03:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:50,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:50,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751026151] [2022-07-19 11:03:50,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751026151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:50,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:50,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:50,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624665587] [2022-07-19 11:03:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:50,131 INFO L87 Difference]: Start difference. First operand 176 states and 279 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:51,156 INFO L93 Difference]: Finished difference Result 478 states and 761 transitions. [2022-07-19 11:03:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-07-19 11:03:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:51,159 INFO L225 Difference]: With dead ends: 478 [2022-07-19 11:03:51,159 INFO L226 Difference]: Without dead ends: 323 [2022-07-19 11:03:51,159 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 [2022-07-19 11:03:51,160 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 147 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:51,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 620 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:03:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-19 11:03:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 208. [2022-07-19 11:03:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5942028985507246) internal successors, (330), 207 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 330 transitions. [2022-07-19 11:03:51,169 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 330 transitions. Word has length 51 [2022-07-19 11:03:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 330 transitions. [2022-07-19 11:03:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 330 transitions. [2022-07-19 11:03:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 11:03:51,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:51,172 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] [2022-07-19 11:03:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:03:51,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:51,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1022264289, now seen corresponding path program 1 times [2022-07-19 11:03:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:51,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337736617] [2022-07-19 11:03:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:51,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337736617] [2022-07-19 11:03:51,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337736617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:51,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:51,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330951563] [2022-07-19 11:03:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:51,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:51,259 INFO L87 Difference]: Start difference. First operand 208 states and 330 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:52,276 INFO L93 Difference]: Finished difference Result 497 states and 786 transitions. [2022-07-19 11:03:52,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:52,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-19 11:03:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:52,279 INFO L225 Difference]: With dead ends: 497 [2022-07-19 11:03:52,279 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 11:03:52,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:52,280 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 152 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:52,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:03:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 11:03:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 208. [2022-07-19 11:03:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 207 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 326 transitions. [2022-07-19 11:03:52,287 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 326 transitions. Word has length 52 [2022-07-19 11:03:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:52,287 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 326 transitions. [2022-07-19 11:03:52,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 326 transitions. [2022-07-19 11:03:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 11:03:52,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:52,289 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] [2022-07-19 11:03:52,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:03:52,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash 40885771, now seen corresponding path program 1 times [2022-07-19 11:03:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:52,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136893700] [2022-07-19 11:03:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:52,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136893700] [2022-07-19 11:03:52,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136893700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:52,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:52,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931331763] [2022-07-19 11:03:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:52,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:52,417 INFO L87 Difference]: Start difference. First operand 208 states and 326 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:53,242 INFO L93 Difference]: Finished difference Result 411 states and 641 transitions. [2022-07-19 11:03:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:53,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-19 11:03:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:53,243 INFO L225 Difference]: With dead ends: 411 [2022-07-19 11:03:53,243 INFO L226 Difference]: Without dead ends: 224 [2022-07-19 11:03:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:53,244 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 26 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-19 11:03:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 208. [2022-07-19 11:03:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.570048309178744) internal successors, (325), 207 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 325 transitions. [2022-07-19 11:03:53,250 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 325 transitions. Word has length 52 [2022-07-19 11:03:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 325 transitions. [2022-07-19 11:03:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 325 transitions. [2022-07-19 11:03:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 11:03:53,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:53,251 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] [2022-07-19 11:03:53,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:03:53,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:53,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash 861050644, now seen corresponding path program 1 times [2022-07-19 11:03:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:53,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848681005] [2022-07-19 11:03:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:53,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848681005] [2022-07-19 11:03:53,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848681005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:53,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:53,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:53,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050294159] [2022-07-19 11:03:53,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:53,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:53,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:53,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:53,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:53,348 INFO L87 Difference]: Start difference. First operand 208 states and 325 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:53,818 INFO L93 Difference]: Finished difference Result 410 states and 639 transitions. [2022-07-19 11:03:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-19 11:03:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:53,819 INFO L225 Difference]: With dead ends: 410 [2022-07-19 11:03:53,819 INFO L226 Difference]: Without dead ends: 223 [2022-07-19 11:03:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:53,820 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 19 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:53,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 475 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:03:53,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-19 11:03:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 208. [2022-07-19 11:03:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.565217391304348) internal successors, (324), 207 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 324 transitions. [2022-07-19 11:03:53,825 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 324 transitions. Word has length 52 [2022-07-19 11:03:53,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:53,825 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 324 transitions. [2022-07-19 11:03:53,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 324 transitions. [2022-07-19 11:03:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 11:03:53,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:53,826 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] [2022-07-19 11:03:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:03:53,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1296410196, now seen corresponding path program 1 times [2022-07-19 11:03:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157130136] [2022-07-19 11:03:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:53,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157130136] [2022-07-19 11:03:53,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157130136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:53,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:53,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995631085] [2022-07-19 11:03:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:53,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:53,898 INFO L87 Difference]: Start difference. First operand 208 states and 324 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:54,825 INFO L93 Difference]: Finished difference Result 497 states and 777 transitions. [2022-07-19 11:03:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:54,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-19 11:03:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:54,827 INFO L225 Difference]: With dead ends: 497 [2022-07-19 11:03:54,827 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 11:03:54,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:54,828 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 145 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:54,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:03:54,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 11:03:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 209. [2022-07-19 11:03:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5528846153846154) internal successors, (323), 208 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 323 transitions. [2022-07-19 11:03:54,833 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 323 transitions. Word has length 52 [2022-07-19 11:03:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:54,833 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 323 transitions. [2022-07-19 11:03:54,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:54,833 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 323 transitions. [2022-07-19 11:03:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 11:03:54,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:54,834 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] [2022-07-19 11:03:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:03:54,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash 585554567, now seen corresponding path program 1 times [2022-07-19 11:03:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:54,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723012073] [2022-07-19 11:03:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:54,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723012073] [2022-07-19 11:03:54,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723012073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:54,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:54,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419156208] [2022-07-19 11:03:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:54,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:54,905 INFO L87 Difference]: Start difference. First operand 209 states and 323 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:03:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:56,363 INFO L93 Difference]: Finished difference Result 410 states and 635 transitions. [2022-07-19 11:03:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:56,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-19 11:03:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:56,365 INFO L225 Difference]: With dead ends: 410 [2022-07-19 11:03:56,365 INFO L226 Difference]: Without dead ends: 222 [2022-07-19 11:03:56,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:56,366 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 22 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:56,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:03:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-19 11:03:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 209. [2022-07-19 11:03:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 208 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2022-07-19 11:03:56,370 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 53 [2022-07-19 11:03:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:56,371 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2022-07-19 11:03:56,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,371 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2022-07-19 11:03:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 11:03:56,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:56,372 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] [2022-07-19 11:03:56,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:03:56,372 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash -991616538, now seen corresponding path program 1 times [2022-07-19 11:03:56,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:56,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561614587] [2022-07-19 11:03:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:56,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:56,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561614587] [2022-07-19 11:03:56,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561614587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:56,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:56,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305030831] [2022-07-19 11:03:56,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:56,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:56,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:56,443 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:56,895 INFO L93 Difference]: Finished difference Result 498 states and 773 transitions. [2022-07-19 11:03:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-19 11:03:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:56,897 INFO L225 Difference]: With dead ends: 498 [2022-07-19 11:03:56,897 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 11:03:56,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:56,897 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 147 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:03:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 11:03:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 209. [2022-07-19 11:03:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5288461538461537) internal successors, (318), 208 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 318 transitions. [2022-07-19 11:03:56,902 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 318 transitions. Word has length 54 [2022-07-19 11:03:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:56,902 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 318 transitions. [2022-07-19 11:03:56,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 318 transitions. [2022-07-19 11:03:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 11:03:56,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:56,903 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] [2022-07-19 11:03:56,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:03:56,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:56,903 INFO L85 PathProgramCache]: Analyzing trace with hash 373652162, now seen corresponding path program 1 times [2022-07-19 11:03:56,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:56,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933668809] [2022-07-19 11:03:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:56,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:56,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933668809] [2022-07-19 11:03:56,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933668809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:56,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:56,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:57,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680277487] [2022-07-19 11:03:57,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:57,001 INFO L87 Difference]: Start difference. First operand 209 states and 318 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:57,357 INFO L93 Difference]: Finished difference Result 400 states and 614 transitions. [2022-07-19 11:03:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-19 11:03:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:57,359 INFO L225 Difference]: With dead ends: 400 [2022-07-19 11:03:57,359 INFO L226 Difference]: Without dead ends: 212 [2022-07-19 11:03:57,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:57,359 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:57,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 493 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 11:03:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-19 11:03:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-07-19 11:03:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 208 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 317 transitions. [2022-07-19 11:03:57,364 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 317 transitions. Word has length 55 [2022-07-19 11:03:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:57,364 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 317 transitions. [2022-07-19 11:03:57,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 317 transitions. [2022-07-19 11:03:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 11:03:57,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:57,365 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] [2022-07-19 11:03:57,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:03:57,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1312076378, now seen corresponding path program 1 times [2022-07-19 11:03:57,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:57,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505337847] [2022-07-19 11:03:57,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:57,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505337847] [2022-07-19 11:03:57,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505337847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:57,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:57,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146178740] [2022-07-19 11:03:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:57,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:57,439 INFO L87 Difference]: Start difference. First operand 209 states and 317 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:58,436 INFO L93 Difference]: Finished difference Result 437 states and 668 transitions. [2022-07-19 11:03:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-19 11:03:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:58,437 INFO L225 Difference]: With dead ends: 437 [2022-07-19 11:03:58,438 INFO L226 Difference]: Without dead ends: 249 [2022-07-19 11:03:58,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:58,438 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 30 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:03:58,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 497 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:03:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-19 11:03:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 231. [2022-07-19 11:03:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 230 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 351 transitions. [2022-07-19 11:03:58,443 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 351 transitions. Word has length 55 [2022-07-19 11:03:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:58,443 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 351 transitions. [2022-07-19 11:03:58,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 351 transitions. [2022-07-19 11:03:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 11:03:58,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:58,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:58,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:03:58,444 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:58,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:58,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1411411051, now seen corresponding path program 1 times [2022-07-19 11:03:58,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:58,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074491665] [2022-07-19 11:03:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:58,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074491665] [2022-07-19 11:03:58,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074491665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:58,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:58,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775552581] [2022-07-19 11:03:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:58,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:58,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:58,519 INFO L87 Difference]: Start difference. First operand 231 states and 351 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:03:59,376 INFO L93 Difference]: Finished difference Result 542 states and 833 transitions. [2022-07-19 11:03:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:03:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-19 11:03:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:03:59,378 INFO L225 Difference]: With dead ends: 542 [2022-07-19 11:03:59,378 INFO L226 Difference]: Without dead ends: 332 [2022-07-19 11:03:59,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:03:59,379 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 149 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 332 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 [2022-07-19 11:03:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:03:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-19 11:03:59,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 231. [2022-07-19 11:03:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.508695652173913) internal successors, (347), 230 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 347 transitions. [2022-07-19 11:03:59,384 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 347 transitions. Word has length 69 [2022-07-19 11:03:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:03:59,384 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 347 transitions. [2022-07-19 11:03:59,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:03:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 347 transitions. [2022-07-19 11:03:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 11:03:59,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:03:59,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:03:59,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:03:59,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:03:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:03:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2063391372, now seen corresponding path program 1 times [2022-07-19 11:03:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:03:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900112528] [2022-07-19 11:03:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:03:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:03:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:03:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:03:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:03:59,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900112528] [2022-07-19 11:03:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900112528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:03:59,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:03:59,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:03:59,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398990406] [2022-07-19 11:03:59,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:03:59,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:03:59,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:03:59,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:03:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:03:59,467 INFO L87 Difference]: Start difference. First operand 231 states and 347 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:00,923 INFO L93 Difference]: Finished difference Result 541 states and 824 transitions. [2022-07-19 11:04:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:00,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-19 11:04:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:00,925 INFO L225 Difference]: With dead ends: 541 [2022-07-19 11:04:00,925 INFO L226 Difference]: Without dead ends: 331 [2022-07-19 11:04:00,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:00,926 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 142 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 334 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 [2022-07-19 11:04:00,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 334 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 11:04:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-19 11:04:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 232. [2022-07-19 11:04:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 231 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 346 transitions. [2022-07-19 11:04:00,931 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 346 transitions. Word has length 69 [2022-07-19 11:04:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:00,931 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 346 transitions. [2022-07-19 11:04:00,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 346 transitions. [2022-07-19 11:04:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 11:04:00,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:00,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:00,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:04:00,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash 122165287, now seen corresponding path program 1 times [2022-07-19 11:04:00,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:00,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626747474] [2022-07-19 11:04:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:00,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626747474] [2022-07-19 11:04:01,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626747474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:01,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:01,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85585516] [2022-07-19 11:04:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:01,008 INFO L87 Difference]: Start difference. First operand 232 states and 346 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:01,705 INFO L93 Difference]: Finished difference Result 542 states and 820 transitions. [2022-07-19 11:04:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-07-19 11:04:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:01,707 INFO L225 Difference]: With dead ends: 542 [2022-07-19 11:04:01,707 INFO L226 Difference]: Without dead ends: 331 [2022-07-19 11:04:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:01,708 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 146 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:01,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 334 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:01,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-19 11:04:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 232. [2022-07-19 11:04:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 231 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) [2022-07-19 11:04:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 342 transitions. [2022-07-19 11:04:01,712 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 342 transitions. Word has length 70 [2022-07-19 11:04:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:01,713 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 342 transitions. [2022-07-19 11:04:01,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 342 transitions. [2022-07-19 11:04:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 11:04:01,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:01,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:01,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:04:01,713 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1733152866, now seen corresponding path program 1 times [2022-07-19 11:04:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:01,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694060493] [2022-07-19 11:04:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:01,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:01,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694060493] [2022-07-19 11:04:01,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694060493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:01,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:01,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:01,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349061314] [2022-07-19 11:04:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:01,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:01,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:01,828 INFO L87 Difference]: Start difference. First operand 232 states and 342 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:02,312 INFO L93 Difference]: Finished difference Result 450 states and 669 transitions. [2022-07-19 11:04:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-07-19 11:04:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:02,313 INFO L225 Difference]: With dead ends: 450 [2022-07-19 11:04:02,313 INFO L226 Difference]: Without dead ends: 239 [2022-07-19 11:04:02,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:02,314 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:02,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 513 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:04:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-19 11:04:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 232. [2022-07-19 11:04:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4761904761904763) internal successors, (341), 231 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) [2022-07-19 11:04:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 341 transitions. [2022-07-19 11:04:02,319 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 341 transitions. Word has length 72 [2022-07-19 11:04:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:02,319 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 341 transitions. [2022-07-19 11:04:02,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 341 transitions. [2022-07-19 11:04:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 11:04:02,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:02,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:02,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:04:02,320 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash 293504549, now seen corresponding path program 1 times [2022-07-19 11:04:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484812468] [2022-07-19 11:04:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:02,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484812468] [2022-07-19 11:04:02,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484812468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:02,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:02,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884540574] [2022-07-19 11:04:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:02,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:02,422 INFO L87 Difference]: Start difference. First operand 232 states and 341 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:03,646 INFO L93 Difference]: Finished difference Result 538 states and 797 transitions. [2022-07-19 11:04:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 77 [2022-07-19 11:04:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:03,648 INFO L225 Difference]: With dead ends: 538 [2022-07-19 11:04:03,648 INFO L226 Difference]: Without dead ends: 327 [2022-07-19 11:04:03,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:03,648 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 88 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 471 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-19 11:04:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 263. [2022-07-19 11:04:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4770992366412214) internal successors, (387), 262 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 387 transitions. [2022-07-19 11:04:03,653 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 387 transitions. Word has length 77 [2022-07-19 11:04:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:03,653 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 387 transitions. [2022-07-19 11:04:03,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 387 transitions. [2022-07-19 11:04:03,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 11:04:03,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:03,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:03,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:04:03,655 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:03,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1950478749, now seen corresponding path program 1 times [2022-07-19 11:04:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:03,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768200315] [2022-07-19 11:04:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:03,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:03,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768200315] [2022-07-19 11:04:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768200315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:03,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868963835] [2022-07-19 11:04:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:03,735 INFO L87 Difference]: Start difference. First operand 263 states and 387 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:04,097 INFO L93 Difference]: Finished difference Result 551 states and 815 transitions. [2022-07-19 11:04:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:04,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 77 [2022-07-19 11:04:04,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:04,099 INFO L225 Difference]: With dead ends: 551 [2022-07-19 11:04:04,099 INFO L226 Difference]: Without dead ends: 309 [2022-07-19 11:04:04,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:04,100 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 35 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:04,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 589 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 11:04:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-19 11:04:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 287. [2022-07-19 11:04:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4755244755244756) internal successors, (422), 286 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 422 transitions. [2022-07-19 11:04:04,105 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 422 transitions. Word has length 77 [2022-07-19 11:04:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:04,106 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 422 transitions. [2022-07-19 11:04:04,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 422 transitions. [2022-07-19 11:04:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 11:04:04,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:04,107 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:04,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:04:04,107 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2009733770, now seen corresponding path program 1 times [2022-07-19 11:04:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:04,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866111506] [2022-07-19 11:04:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:04,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:04,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866111506] [2022-07-19 11:04:04,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866111506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:04,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:04,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265014330] [2022-07-19 11:04:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:04,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:04,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:04,193 INFO L87 Difference]: Start difference. First operand 287 states and 422 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:06,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:06,319 INFO L93 Difference]: Finished difference Result 617 states and 912 transitions. [2022-07-19 11:04:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:06,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 82 [2022-07-19 11:04:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:06,321 INFO L225 Difference]: With dead ends: 617 [2022-07-19 11:04:06,321 INFO L226 Difference]: Without dead ends: 351 [2022-07-19 11:04:06,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:06,322 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 77 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:06,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 469 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 11:04:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-19 11:04:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 297. [2022-07-19 11:04:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.489864864864865) internal successors, (441), 296 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 441 transitions. [2022-07-19 11:04:06,327 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 441 transitions. Word has length 82 [2022-07-19 11:04:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:06,327 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 441 transitions. [2022-07-19 11:04:06,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 441 transitions. [2022-07-19 11:04:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 11:04:06,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:06,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:06,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:04:06,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:06,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2129799745, now seen corresponding path program 1 times [2022-07-19 11:04:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:06,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343883091] [2022-07-19 11:04:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:06,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:06,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343883091] [2022-07-19 11:04:06,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343883091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:06,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:06,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167390948] [2022-07-19 11:04:06,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:06,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:06,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:06,437 INFO L87 Difference]: Start difference. First operand 297 states and 441 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:08,397 INFO L93 Difference]: Finished difference Result 621 states and 923 transitions. [2022-07-19 11:04:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 83 [2022-07-19 11:04:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:08,399 INFO L225 Difference]: With dead ends: 621 [2022-07-19 11:04:08,399 INFO L226 Difference]: Without dead ends: 345 [2022-07-19 11:04:08,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:08,400 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 70 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:08,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 475 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 11:04:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-19 11:04:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 298. [2022-07-19 11:04:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4882154882154883) internal successors, (442), 297 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2022-07-19 11:04:08,406 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 83 [2022-07-19 11:04:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:08,406 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2022-07-19 11:04:08,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2022-07-19 11:04:08,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 11:04:08,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:08,407 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:04:08,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1674400777, now seen corresponding path program 1 times [2022-07-19 11:04:08,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:08,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278737976] [2022-07-19 11:04:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 11:04:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278737976] [2022-07-19 11:04:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278737976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:08,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:08,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244013426] [2022-07-19 11:04:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:08,530 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:09,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:10,354 INFO L93 Difference]: Finished difference Result 585 states and 872 transitions. [2022-07-19 11:04:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:10,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-19 11:04:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:10,356 INFO L225 Difference]: With dead ends: 585 [2022-07-19 11:04:10,356 INFO L226 Difference]: Without dead ends: 308 [2022-07-19 11:04:10,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:10,357 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 149 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:10,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 354 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 11:04:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-19 11:04:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2022-07-19 11:04:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4803921568627452) internal successors, (453), 306 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 453 transitions. [2022-07-19 11:04:10,362 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 453 transitions. Word has length 94 [2022-07-19 11:04:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:10,362 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 453 transitions. [2022-07-19 11:04:10,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 453 transitions. [2022-07-19 11:04:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 11:04:10,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:10,363 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:04:10,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1278038072, now seen corresponding path program 1 times [2022-07-19 11:04:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353468288] [2022-07-19 11:04:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:10,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353468288] [2022-07-19 11:04:10,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353468288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:10,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:10,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:10,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249386849] [2022-07-19 11:04:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:10,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:10,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:10,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:10,436 INFO L87 Difference]: Start difference. First operand 307 states and 453 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2022-07-19 11:04:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,004 INFO L93 Difference]: Finished difference Result 682 states and 1021 transitions. [2022-07-19 11:04:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 95 [2022-07-19 11:04:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,005 INFO L225 Difference]: With dead ends: 682 [2022-07-19 11:04:11,005 INFO L226 Difference]: Without dead ends: 396 [2022-07-19 11:04:11,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:11,006 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 136 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 354 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-19 11:04:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 307. [2022-07-19 11:04:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4640522875816993) internal successors, (448), 306 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 448 transitions. [2022-07-19 11:04:11,013 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 448 transitions. Word has length 95 [2022-07-19 11:04:11,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,013 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 448 transitions. [2022-07-19 11:04:11,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2022-07-19 11:04:11,014 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 448 transitions. [2022-07-19 11:04:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 11:04:11,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,014 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:04:11,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 868200130, now seen corresponding path program 1 times [2022-07-19 11:04:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310076162] [2022-07-19 11:04:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:04:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310076162] [2022-07-19 11:04:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310076162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169993361] [2022-07-19 11:04:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:11,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:11,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:11,124 INFO L87 Difference]: Start difference. First operand 307 states and 448 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) [2022-07-19 11:04:11,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,721 INFO L93 Difference]: Finished difference Result 630 states and 922 transitions. [2022-07-19 11:04:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:11,723 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 99 [2022-07-19 11:04:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,724 INFO L225 Difference]: With dead ends: 630 [2022-07-19 11:04:11,724 INFO L226 Difference]: Without dead ends: 344 [2022-07-19 11:04:11,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:11,725 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 77 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 503 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-19 11:04:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2022-07-19 11:04:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 306 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 447 transitions. [2022-07-19 11:04:11,731 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 447 transitions. Word has length 99 [2022-07-19 11:04:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,731 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 447 transitions. [2022-07-19 11:04:11,731 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) [2022-07-19 11:04:11,731 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 447 transitions. [2022-07-19 11:04:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 11:04:11,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:04:11,733 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,733 INFO L85 PathProgramCache]: Analyzing trace with hash 908874880, now seen corresponding path program 1 times [2022-07-19 11:04:11,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741019758] [2022-07-19 11:04:11,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 11:04:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:11,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741019758] [2022-07-19 11:04:11,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741019758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:11,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:11,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:11,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832083111] [2022-07-19 11:04:11,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:11,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:11,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:11,808 INFO L87 Difference]: Start difference. First operand 307 states and 447 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,838 INFO L93 Difference]: Finished difference Result 874 states and 1287 transitions. [2022-07-19 11:04:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 99 [2022-07-19 11:04:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,840 INFO L225 Difference]: With dead ends: 874 [2022-07-19 11:04:11,840 INFO L226 Difference]: Without dead ends: 588 [2022-07-19 11:04:11,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:11,841 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:11,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-07-19 11:04:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2022-07-19 11:04:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 1.4565587734241907) internal successors, (855), 587 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 855 transitions. [2022-07-19 11:04:11,854 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 855 transitions. Word has length 99 [2022-07-19 11:04:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 855 transitions. [2022-07-19 11:04:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 855 transitions. [2022-07-19 11:04:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 11:04:11,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:04:11,856 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1342603966, now seen corresponding path program 1 times [2022-07-19 11:04:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475339564] [2022-07-19 11:04:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 11:04:11,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:11,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475339564] [2022-07-19 11:04:11,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475339564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:11,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:11,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487561822] [2022-07-19 11:04:11,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:11,918 INFO L87 Difference]: Start difference. First operand 588 states and 855 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:11,940 INFO L93 Difference]: Finished difference Result 1182 states and 1722 transitions. [2022-07-19 11:04:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-19 11:04:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:11,942 INFO L225 Difference]: With dead ends: 1182 [2022-07-19 11:04:11,942 INFO L226 Difference]: Without dead ends: 615 [2022-07-19 11:04:11,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:11,944 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:11,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 410 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-19 11:04:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2022-07-19 11:04:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.4495114006514658) internal successors, (890), 614 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 890 transitions. [2022-07-19 11:04:11,955 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 890 transitions. Word has length 99 [2022-07-19 11:04:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:11,955 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 890 transitions. [2022-07-19 11:04:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 890 transitions. [2022-07-19 11:04:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 11:04:11,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:11,957 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:11,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:04:11,957 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2113329668, now seen corresponding path program 1 times [2022-07-19 11:04:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:11,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228085830] [2022-07-19 11:04:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 11:04:12,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228085830] [2022-07-19 11:04:12,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228085830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866277443] [2022-07-19 11:04:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,036 INFO L87 Difference]: Start difference. First operand 615 states and 890 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,054 INFO L93 Difference]: Finished difference Result 1211 states and 1758 transitions. [2022-07-19 11:04:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-19 11:04:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,056 INFO L225 Difference]: With dead ends: 1211 [2022-07-19 11:04:12,056 INFO L226 Difference]: Without dead ends: 617 [2022-07-19 11:04:12,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,061 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 389 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-19 11:04:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2022-07-19 11:04:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.448051948051948) internal successors, (892), 616 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 892 transitions. [2022-07-19 11:04:12,075 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 892 transitions. Word has length 99 [2022-07-19 11:04:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,075 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 892 transitions. [2022-07-19 11:04:12,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 892 transitions. [2022-07-19 11:04:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 11:04:12,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,077 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:12,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:04:12,077 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,078 INFO L85 PathProgramCache]: Analyzing trace with hash -254845290, now seen corresponding path program 1 times [2022-07-19 11:04:12,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767588958] [2022-07-19 11:04:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767588958] [2022-07-19 11:04:12,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767588958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886589275] [2022-07-19 11:04:12,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:12,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:12,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,152 INFO L87 Difference]: Start difference. First operand 617 states and 892 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,188 INFO L93 Difference]: Finished difference Result 1497 states and 2179 transitions. [2022-07-19 11:04:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:12,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 101 [2022-07-19 11:04:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,190 INFO L225 Difference]: With dead ends: 1497 [2022-07-19 11:04:12,191 INFO L226 Difference]: Without dead ends: 903 [2022-07-19 11:04:12,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,192 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 164 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 372 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-07-19 11:04:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2022-07-19 11:04:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 1.4566666666666668) internal successors, (1311), 900 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1311 transitions. [2022-07-19 11:04:12,210 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1311 transitions. Word has length 101 [2022-07-19 11:04:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,210 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1311 transitions. [2022-07-19 11:04:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1311 transitions. [2022-07-19 11:04:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 11:04:12,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:12,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:04:12,212 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 34857145, now seen corresponding path program 1 times [2022-07-19 11:04:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610709820] [2022-07-19 11:04:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:12,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610709820] [2022-07-19 11:04:12,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610709820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549412808] [2022-07-19 11:04:12,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,288 INFO L87 Difference]: Start difference. First operand 901 states and 1311 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,328 INFO L93 Difference]: Finished difference Result 2065 states and 3015 transitions. [2022-07-19 11:04:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:12,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 106 [2022-07-19 11:04:12,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,332 INFO L225 Difference]: With dead ends: 2065 [2022-07-19 11:04:12,332 INFO L226 Difference]: Without dead ends: 1187 [2022-07-19 11:04:12,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,361 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 569 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-07-19 11:04:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2022-07-19 11:04:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1184 states have (on average 1.4493243243243243) internal successors, (1716), 1184 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1716 transitions. [2022-07-19 11:04:12,383 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1716 transitions. Word has length 106 [2022-07-19 11:04:12,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,383 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1716 transitions. [2022-07-19 11:04:12,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1716 transitions. [2022-07-19 11:04:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 11:04:12,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,385 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] [2022-07-19 11:04:12,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:04:12,385 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -285519407, now seen corresponding path program 1 times [2022-07-19 11:04:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326318018] [2022-07-19 11:04:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:12,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326318018] [2022-07-19 11:04:12,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326318018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:12,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778674327] [2022-07-19 11:04:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:12,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:12,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,458 INFO L87 Difference]: Start difference. First operand 1185 states and 1716 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,498 INFO L93 Difference]: Finished difference Result 2626 states and 3817 transitions. [2022-07-19 11:04:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-07-19 11:04:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,502 INFO L225 Difference]: With dead ends: 2626 [2022-07-19 11:04:12,502 INFO L226 Difference]: Without dead ends: 1464 [2022-07-19 11:04:12,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,504 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 567 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-07-19 11:04:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2022-07-19 11:04:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.4497607655502391) internal successors, (2121), 1463 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2121 transitions. [2022-07-19 11:04:12,533 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2121 transitions. Word has length 123 [2022-07-19 11:04:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,533 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 2121 transitions. [2022-07-19 11:04:12,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2121 transitions. [2022-07-19 11:04:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 11:04:12,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:12,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:04:12,536 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1271906027, now seen corresponding path program 1 times [2022-07-19 11:04:12,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84879009] [2022-07-19 11:04:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 11:04:12,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84879009] [2022-07-19 11:04:12,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84879009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:04:12,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923462704] [2022-07-19 11:04:12,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:04:12,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:04:12,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,625 INFO L87 Difference]: Start difference. First operand 1464 states and 2121 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2022-07-19 11:04:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:12,690 INFO L93 Difference]: Finished difference Result 1752 states and 2537 transitions. [2022-07-19 11:04:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:04:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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 129 [2022-07-19 11:04:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:12,695 INFO L225 Difference]: With dead ends: 1752 [2022-07-19 11:04:12,695 INFO L226 Difference]: Without dead ends: 1750 [2022-07-19 11:04:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:04:12,699 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 165 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:12,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 371 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:04:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-07-19 11:04:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1748. [2022-07-19 11:04:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 1.450486548368632) internal successors, (2534), 1747 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2534 transitions. [2022-07-19 11:04:12,745 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2534 transitions. Word has length 129 [2022-07-19 11:04:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:12,746 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2534 transitions. [2022-07-19 11:04:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 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) [2022-07-19 11:04:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2534 transitions. [2022-07-19 11:04:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 11:04:12,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:12,749 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] [2022-07-19 11:04:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:04:12,749 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:12,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1650407178, now seen corresponding path program 1 times [2022-07-19 11:04:12,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:12,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642363451] [2022-07-19 11:04:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:12,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-19 11:04:12,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642363451] [2022-07-19 11:04:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642363451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:12,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:04:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595119702] [2022-07-19 11:04:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:04:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:04:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:12,949 INFO L87 Difference]: Start difference. First operand 1748 states and 2534 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:14,045 INFO L93 Difference]: Finished difference Result 3493 states and 5064 transitions. [2022-07-19 11:04:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:04:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-07-19 11:04:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:14,050 INFO L225 Difference]: With dead ends: 3493 [2022-07-19 11:04:14,051 INFO L226 Difference]: Without dead ends: 1748 [2022-07-19 11:04:14,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:04:14,053 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:14,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:04:14,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-07-19 11:04:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2022-07-19 11:04:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 1.4499141385231826) internal successors, (2533), 1747 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2533 transitions. [2022-07-19 11:04:14,125 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2533 transitions. Word has length 166 [2022-07-19 11:04:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:14,125 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2533 transitions. [2022-07-19 11:04:14,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2533 transitions. [2022-07-19 11:04:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 11:04:14,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:14,127 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] [2022-07-19 11:04:14,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:04:14,128 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -74201144, now seen corresponding path program 1 times [2022-07-19 11:04:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:14,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122002516] [2022-07-19 11:04:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:04:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122002516] [2022-07-19 11:04:14,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122002516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:04:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419552540] [2022-07-19 11:04:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:14,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:04:14,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:14,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 11:04:14,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:04:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:15,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 239 conjunts are in the unsatisfiable core [2022-07-19 11:04:15,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:04:16,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28153 treesize of output 23896 [2022-07-19 11:04:16,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:04:16,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10709 treesize of output 1662