./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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.11.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 70c3bc063fdec0bf22217db797a4f26edc24e29e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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.11.i.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 70c3bc063fdec0bf22217db797a4f26edc24e29e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:33:01,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:33:01,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:33:01,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:33:01,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:33:01,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:33:01,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:33:01,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:33:01,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:33:01,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:33:01,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:33:01,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:33:01,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:33:01,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:33:01,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:33:01,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:33:01,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:33:01,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:33:01,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:33:01,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:33:01,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:33:01,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:33:01,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:33:01,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:33:01,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:33:01,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:33:01,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:33:01,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:33:01,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:33:01,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:33:01,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:33:01,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:33:01,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:33:01,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:33:01,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:33:01,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:33:01,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:33:01,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:33:01,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:33:01,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:33:01,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:33:01,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:33:01,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:33:01,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:33:01,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:33:01,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:33:01,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:33:01,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:33:01,440 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:33:01,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:33:01,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:33:01,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:33:01,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:33:01,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:33:01,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:33:01,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:33:01,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:33:01,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:33:01,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:33:01,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:33:01,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:33:01,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:33:01,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:33:01,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:33:01,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:33:01,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:33:01,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:33:01,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2021-08-29 03:33:01,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:33:01,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:33:01,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:33:01,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:33:01,766 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:33:01,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:01,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e116653a/1d7338da8d614655ad1a43e40a91de57/FLAG5d7c8eb3f [2021-08-29 03:33:02,399 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:33:02,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:02,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e116653a/1d7338da8d614655ad1a43e40a91de57/FLAG5d7c8eb3f [2021-08-29 03:33:02,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e116653a/1d7338da8d614655ad1a43e40a91de57 [2021-08-29 03:33:02,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:33:02,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:33:02,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:33:02,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:33:02,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:33:02,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:33:02" (1/1) ... [2021-08-29 03:33:02,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bdfe4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:02, skipping insertion in model container [2021-08-29 03:33:02,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:33:02" (1/1) ... [2021-08-29 03:33:02,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:33:02,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:33:03,108 WARN L228 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.11.i.cil-1.c[73189,73202] [2021-08-29 03:33:03,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:33:03,141 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:33:03,278 WARN L228 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.11.i.cil-1.c[73189,73202] [2021-08-29 03:33:03,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:33:03,300 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:33:03,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03 WrapperNode [2021-08-29 03:33:03,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:33:03,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:33:03,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:33:03,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:33:03,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:33:03,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:33:03,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:33:03,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:33:03,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:33:03,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:33:03,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:33:03,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:33:03,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (1/1) ... [2021-08-29 03:33:03,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:33:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:33:03,520 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) [2021-08-29 03:33:03,535 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 [2021-08-29 03:33:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 03:33:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:33:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 03:33:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 03:33:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 03:33:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:33:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 03:33:03,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:33:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:33:03,718 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-29 03:33:04,103 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-29 03:33:04,103 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-29 03:33:04,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:33:04,115 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 03:33:04,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:04 BoogieIcfgContainer [2021-08-29 03:33:04,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:33:04,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:33:04,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:33:04,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:33:04,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:33:02" (1/3) ... [2021-08-29 03:33:04,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277ecb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:33:04, skipping insertion in model container [2021-08-29 03:33:04,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:03" (2/3) ... [2021-08-29 03:33:04,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277ecb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:33:04, skipping insertion in model container [2021-08-29 03:33:04,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:04" (3/3) ... [2021-08-29 03:33:04,124 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:04,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:33:04,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:33:04,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:33:04,189 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:33:04,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:33:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7191780821917808) internal successors, (251), 147 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-29 03:33:04,220 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:04,220 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:04,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2021-08-29 03:33:04,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:04,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589191915] [2021-08-29 03:33:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:04,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:04,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:04,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589191915] [2021-08-29 03:33:04,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589191915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:04,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:04,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:04,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346975907] [2021-08-29 03:33:04,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:04,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:04,584 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7191780821917808) internal successors, (251), 147 states have internal predecessors, (251), 0 states have call successors, (0), 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 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:05,398 INFO L93 Difference]: Finished difference Result 323 states and 547 transitions. [2021-08-29 03:33:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:05,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-29 03:33:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:05,413 INFO L225 Difference]: With dead ends: 323 [2021-08-29 03:33:05,414 INFO L226 Difference]: Without dead ends: 163 [2021-08-29 03:33:05,417 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:05,420 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 619.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 742.32ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:05,421 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 742 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [9 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 742.32ms Time] [2021-08-29 03:33:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-29 03:33:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2021-08-29 03:33:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5586206896551724) internal successors, (226), 145 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 226 transitions. [2021-08-29 03:33:05,483 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 226 transitions. Word has length 35 [2021-08-29 03:33:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:05,484 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 226 transitions. [2021-08-29 03:33:05,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:05,484 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 226 transitions. [2021-08-29 03:33:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-29 03:33:05,486 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:05,486 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:05,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:33:05,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:05,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2027967358, now seen corresponding path program 1 times [2021-08-29 03:33:05,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:05,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788872285] [2021-08-29 03:33:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:05,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:05,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:05,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788872285] [2021-08-29 03:33:05,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788872285] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:05,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:05,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:05,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284051917] [2021-08-29 03:33:05,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:05,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:05,589 INFO L87 Difference]: Start difference. First operand 146 states and 226 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:06,219 INFO L93 Difference]: Finished difference Result 290 states and 443 transitions. [2021-08-29 03:33:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-29 03:33:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:06,221 INFO L225 Difference]: With dead ends: 290 [2021-08-29 03:33:06,221 INFO L226 Difference]: Without dead ends: 163 [2021-08-29 03:33:06,222 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:06,223 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 497.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 597.90ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:06,223 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 619 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [8 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 597.90ms Time] [2021-08-29 03:33:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-29 03:33:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2021-08-29 03:33:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5517241379310345) internal successors, (225), 145 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 225 transitions. [2021-08-29 03:33:06,242 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 225 transitions. Word has length 48 [2021-08-29 03:33:06,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:06,243 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 225 transitions. [2021-08-29 03:33:06,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 225 transitions. [2021-08-29 03:33:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-29 03:33:06,248 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:06,248 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:06,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 03:33:06,249 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:06,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1944321008, now seen corresponding path program 1 times [2021-08-29 03:33:06,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:06,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561701121] [2021-08-29 03:33:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:06,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:06,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:06,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561701121] [2021-08-29 03:33:06,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561701121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:06,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:06,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:06,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197505445] [2021-08-29 03:33:06,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:06,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:06,372 INFO L87 Difference]: Start difference. First operand 146 states and 225 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:06,899 INFO L93 Difference]: Finished difference Result 289 states and 441 transitions. [2021-08-29 03:33:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-29 03:33:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:06,901 INFO L225 Difference]: With dead ends: 289 [2021-08-29 03:33:06,901 INFO L226 Difference]: Without dead ends: 162 [2021-08-29 03:33:06,902 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:06,903 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 415.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 495.96ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:06,904 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 618 Unknown, 0 Unchecked, 2.16ms Time], IncrementalHoareTripleChecker [7 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 495.96ms Time] [2021-08-29 03:33:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-29 03:33:06,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2021-08-29 03:33:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5448275862068965) internal successors, (224), 145 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 224 transitions. [2021-08-29 03:33:06,912 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 224 transitions. Word has length 49 [2021-08-29 03:33:06,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:06,912 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 224 transitions. [2021-08-29 03:33:06,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 224 transitions. [2021-08-29 03:33:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-29 03:33:06,914 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:06,914 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:06,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 03:33:06,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2008072389, now seen corresponding path program 1 times [2021-08-29 03:33:06,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:06,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968571571] [2021-08-29 03:33:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:06,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:07,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:07,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968571571] [2021-08-29 03:33:07,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968571571] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:07,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800370103] [2021-08-29 03:33:07,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:07,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:07,002 INFO L87 Difference]: Start difference. First operand 146 states and 224 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:07,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:07,551 INFO L93 Difference]: Finished difference Result 287 states and 438 transitions. [2021-08-29 03:33:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:07,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-29 03:33:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:07,553 INFO L225 Difference]: With dead ends: 287 [2021-08-29 03:33:07,553 INFO L226 Difference]: Without dead ends: 160 [2021-08-29 03:33:07,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:07,555 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 431.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 523.79ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:07,555 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 523.79ms Time] [2021-08-29 03:33:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-29 03:33:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2021-08-29 03:33:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5379310344827586) internal successors, (223), 145 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 223 transitions. [2021-08-29 03:33:07,562 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 223 transitions. Word has length 49 [2021-08-29 03:33:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:07,562 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 223 transitions. [2021-08-29 03:33:07,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 223 transitions. [2021-08-29 03:33:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-29 03:33:07,563 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:07,563 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:07,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 03:33:07,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1467926917, now seen corresponding path program 1 times [2021-08-29 03:33:07,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:07,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148701069] [2021-08-29 03:33:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:07,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:07,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:07,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148701069] [2021-08-29 03:33:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148701069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:07,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:07,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:07,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503746792] [2021-08-29 03:33:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:07,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:07,628 INFO L87 Difference]: Start difference. First operand 146 states and 223 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:08,128 INFO L93 Difference]: Finished difference Result 286 states and 436 transitions. [2021-08-29 03:33:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-29 03:33:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:08,129 INFO L225 Difference]: With dead ends: 286 [2021-08-29 03:33:08,129 INFO L226 Difference]: Without dead ends: 159 [2021-08-29 03:33:08,130 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:08,131 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 401.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 477.69ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:08,131 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 477.69ms Time] [2021-08-29 03:33:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-29 03:33:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2021-08-29 03:33:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 145 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 222 transitions. [2021-08-29 03:33:08,137 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 222 transitions. Word has length 49 [2021-08-29 03:33:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:08,137 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 222 transitions. [2021-08-29 03:33:08,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 222 transitions. [2021-08-29 03:33:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-29 03:33:08,138 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:08,138 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:08,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 03:33:08,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:08,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1078741852, now seen corresponding path program 1 times [2021-08-29 03:33:08,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:08,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766529698] [2021-08-29 03:33:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:08,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:08,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:08,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766529698] [2021-08-29 03:33:08,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766529698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:08,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:08,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:08,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127848788] [2021-08-29 03:33:08,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:08,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:08,187 INFO L87 Difference]: Start difference. First operand 146 states and 222 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:08,674 INFO L93 Difference]: Finished difference Result 286 states and 435 transitions. [2021-08-29 03:33:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-29 03:33:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:08,676 INFO L225 Difference]: With dead ends: 286 [2021-08-29 03:33:08,676 INFO L226 Difference]: Without dead ends: 159 [2021-08-29 03:33:08,677 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.56ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:08,677 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 383.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 468.61ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:08,678 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 468.61ms Time] [2021-08-29 03:33:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-29 03:33:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2021-08-29 03:33:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5241379310344827) internal successors, (221), 145 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 221 transitions. [2021-08-29 03:33:08,682 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 221 transitions. Word has length 49 [2021-08-29 03:33:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:08,682 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 221 transitions. [2021-08-29 03:33:08,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 221 transitions. [2021-08-29 03:33:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-29 03:33:08,683 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:08,684 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:08,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 03:33:08,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 231094087, now seen corresponding path program 1 times [2021-08-29 03:33:08,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:08,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584529031] [2021-08-29 03:33:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:08,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:08,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:08,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584529031] [2021-08-29 03:33:08,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584529031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:08,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:08,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:08,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26913939] [2021-08-29 03:33:08,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:08,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:08,750 INFO L87 Difference]: Start difference. First operand 146 states and 221 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:09,236 INFO L93 Difference]: Finished difference Result 286 states and 434 transitions. [2021-08-29 03:33:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:09,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-29 03:33:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:09,237 INFO L225 Difference]: With dead ends: 286 [2021-08-29 03:33:09,237 INFO L226 Difference]: Without dead ends: 159 [2021-08-29 03:33:09,237 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:09,238 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 393.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.88ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:09,238 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 465.88ms Time] [2021-08-29 03:33:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-29 03:33:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2021-08-29 03:33:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5172413793103448) internal successors, (220), 145 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 220 transitions. [2021-08-29 03:33:09,248 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 220 transitions. Word has length 50 [2021-08-29 03:33:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:09,248 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 220 transitions. [2021-08-29 03:33:09,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 220 transitions. [2021-08-29 03:33:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-29 03:33:09,250 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:09,250 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:09,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 03:33:09,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:09,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1862851913, now seen corresponding path program 1 times [2021-08-29 03:33:09,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:09,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920776008] [2021-08-29 03:33:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:09,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:09,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:09,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920776008] [2021-08-29 03:33:09,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920776008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:09,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:09,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:09,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822142932] [2021-08-29 03:33:09,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:09,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:09,299 INFO L87 Difference]: Start difference. First operand 146 states and 220 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) [2021-08-29 03:33:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:09,803 INFO L93 Difference]: Finished difference Result 286 states and 433 transitions. [2021-08-29 03:33:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:09,803 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 [2021-08-29 03:33:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:09,804 INFO L225 Difference]: With dead ends: 286 [2021-08-29 03:33:09,804 INFO L226 Difference]: Without dead ends: 159 [2021-08-29 03:33:09,805 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:09,806 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 478.85ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:09,806 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 617 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [6 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 478.85ms Time] [2021-08-29 03:33:09,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-29 03:33:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2021-08-29 03:33:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5103448275862068) internal successors, (219), 145 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2021-08-29 03:33:09,810 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 51 [2021-08-29 03:33:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:09,810 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2021-08-29 03:33:09,810 INFO L471 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) [2021-08-29 03:33:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2021-08-29 03:33:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-29 03:33:09,811 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:09,811 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:09,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 03:33:09,812 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:09,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:09,812 INFO L82 PathProgramCache]: Analyzing trace with hash 589286348, now seen corresponding path program 1 times [2021-08-29 03:33:09,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:09,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169058650] [2021-08-29 03:33:09,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:09,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:09,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:09,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169058650] [2021-08-29 03:33:09,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169058650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:09,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:09,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:09,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173684649] [2021-08-29 03:33:09,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:09,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:09,856 INFO L87 Difference]: Start difference. First operand 146 states and 219 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) [2021-08-29 03:33:10,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:10,339 INFO L93 Difference]: Finished difference Result 276 states and 419 transitions. [2021-08-29 03:33:10,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:10,339 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 [2021-08-29 03:33:10,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:10,340 INFO L225 Difference]: With dead ends: 276 [2021-08-29 03:33:10,340 INFO L226 Difference]: Without dead ends: 149 [2021-08-29 03:33:10,341 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:10,341 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.19ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:10,341 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 613 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [2 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 463.19ms Time] [2021-08-29 03:33:10,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-08-29 03:33:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2021-08-29 03:33:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.5034482758620689) internal successors, (218), 145 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 218 transitions. [2021-08-29 03:33:10,345 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 218 transitions. Word has length 52 [2021-08-29 03:33:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:10,345 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 218 transitions. [2021-08-29 03:33:10,345 INFO L471 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) [2021-08-29 03:33:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 218 transitions. [2021-08-29 03:33:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-29 03:33:10,346 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:10,346 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:10,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 03:33:10,346 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash -350273228, now seen corresponding path program 1 times [2021-08-29 03:33:10,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:10,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542117602] [2021-08-29 03:33:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:10,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:10,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:10,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542117602] [2021-08-29 03:33:10,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542117602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:10,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:10,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:10,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534581370] [2021-08-29 03:33:10,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:10,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:10,420 INFO L87 Difference]: Start difference. First operand 146 states and 218 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) [2021-08-29 03:33:10,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:10,912 INFO L93 Difference]: Finished difference Result 316 states and 480 transitions. [2021-08-29 03:33:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:10,912 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 [2021-08-29 03:33:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:10,913 INFO L225 Difference]: With dead ends: 316 [2021-08-29 03:33:10,913 INFO L226 Difference]: Without dead ends: 189 [2021-08-29 03:33:10,914 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:10,914 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 472.82ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:10,914 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 659 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [9 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 472.82ms Time] [2021-08-29 03:33:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-29 03:33:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2021-08-29 03:33:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.532934131736527) internal successors, (256), 167 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 256 transitions. [2021-08-29 03:33:10,919 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 256 transitions. Word has length 52 [2021-08-29 03:33:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:10,919 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 256 transitions. [2021-08-29 03:33:10,920 INFO L471 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) [2021-08-29 03:33:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 256 transitions. [2021-08-29 03:33:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-29 03:33:10,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:10,921 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-08-29 03:33:10,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 03:33:10,921 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:10,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1467398046, now seen corresponding path program 1 times [2021-08-29 03:33:10,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:10,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862642826] [2021-08-29 03:33:10,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:10,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:10,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:10,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862642826] [2021-08-29 03:33:10,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862642826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:10,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:10,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:10,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974764953] [2021-08-29 03:33:10,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:10,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:10,965 INFO L87 Difference]: Start difference. First operand 168 states and 256 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:11,435 INFO L93 Difference]: Finished difference Result 338 states and 517 transitions. [2021-08-29 03:33:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-08-29 03:33:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:11,436 INFO L225 Difference]: With dead ends: 338 [2021-08-29 03:33:11,436 INFO L226 Difference]: Without dead ends: 189 [2021-08-29 03:33:11,437 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:11,437 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 372.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 449.40ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:11,437 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 658 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [9 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 449.40ms Time] [2021-08-29 03:33:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-08-29 03:33:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2021-08-29 03:33:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.526946107784431) internal successors, (255), 167 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 255 transitions. [2021-08-29 03:33:11,441 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 255 transitions. Word has length 65 [2021-08-29 03:33:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:11,441 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 255 transitions. [2021-08-29 03:33:11,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 255 transitions. [2021-08-29 03:33:11,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-29 03:33:11,442 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:11,443 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:11,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 03:33:11,443 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:11,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:11,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2142100496, now seen corresponding path program 1 times [2021-08-29 03:33:11,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:11,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641721726] [2021-08-29 03:33:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:11,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:11,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:11,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641721726] [2021-08-29 03:33:11,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641721726] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:11,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:11,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:11,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931640845] [2021-08-29 03:33:11,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:11,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:11,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:11,520 INFO L87 Difference]: Start difference. First operand 168 states and 255 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:12,011 INFO L93 Difference]: Finished difference Result 337 states and 514 transitions. [2021-08-29 03:33:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:12,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-29 03:33:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:12,012 INFO L225 Difference]: With dead ends: 337 [2021-08-29 03:33:12,012 INFO L226 Difference]: Without dead ends: 188 [2021-08-29 03:33:12,013 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:12,013 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 391.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 470.63ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:12,013 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [8 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 470.63ms Time] [2021-08-29 03:33:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-08-29 03:33:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2021-08-29 03:33:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5209580838323353) internal successors, (254), 167 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) [2021-08-29 03:33:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 254 transitions. [2021-08-29 03:33:12,018 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 254 transitions. Word has length 66 [2021-08-29 03:33:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:12,018 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 254 transitions. [2021-08-29 03:33:12,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:12,019 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 254 transitions. [2021-08-29 03:33:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-29 03:33:12,019 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:12,019 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:12,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 03:33:12,020 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:12,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2089115419, now seen corresponding path program 1 times [2021-08-29 03:33:12,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:12,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165112833] [2021-08-29 03:33:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:12,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:12,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:12,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165112833] [2021-08-29 03:33:12,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165112833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:12,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:12,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:12,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875466738] [2021-08-29 03:33:12,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:12,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:12,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:12,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:12,062 INFO L87 Difference]: Start difference. First operand 168 states and 254 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:12,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:12,553 INFO L93 Difference]: Finished difference Result 335 states and 510 transitions. [2021-08-29 03:33:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:12,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-29 03:33:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:12,554 INFO L225 Difference]: With dead ends: 335 [2021-08-29 03:33:12,554 INFO L226 Difference]: Without dead ends: 186 [2021-08-29 03:33:12,555 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:12,555 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.37ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:12,556 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 459.37ms Time] [2021-08-29 03:33:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-29 03:33:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 168. [2021-08-29 03:33:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5149700598802396) internal successors, (253), 167 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2021-08-29 03:33:12,560 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 66 [2021-08-29 03:33:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:12,560 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2021-08-29 03:33:12,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2021-08-29 03:33:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-29 03:33:12,561 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:12,561 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 03:33:12,562 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1665706405, now seen corresponding path program 1 times [2021-08-29 03:33:12,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:12,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155092243] [2021-08-29 03:33:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:12,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:12,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:12,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155092243] [2021-08-29 03:33:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155092243] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:12,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:12,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:12,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198923853] [2021-08-29 03:33:12,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:12,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:12,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:12,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:12,608 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:13,102 INFO L93 Difference]: Finished difference Result 334 states and 507 transitions. [2021-08-29 03:33:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-29 03:33:13,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:13,104 INFO L225 Difference]: With dead ends: 334 [2021-08-29 03:33:13,104 INFO L226 Difference]: Without dead ends: 185 [2021-08-29 03:33:13,104 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:13,105 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 390.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 473.90ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:13,105 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 473.90ms Time] [2021-08-29 03:33:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-29 03:33:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2021-08-29 03:33:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5089820359281436) internal successors, (252), 167 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2021-08-29 03:33:13,109 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 66 [2021-08-29 03:33:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:13,110 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2021-08-29 03:33:13,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2021-08-29 03:33:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-29 03:33:13,110 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:13,110 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:13,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 03:33:13,111 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:13,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1276521340, now seen corresponding path program 1 times [2021-08-29 03:33:13,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:13,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531518525] [2021-08-29 03:33:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:13,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:13,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:13,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531518525] [2021-08-29 03:33:13,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531518525] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:13,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:13,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:13,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342682441] [2021-08-29 03:33:13,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:13,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:13,162 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:13,641 INFO L93 Difference]: Finished difference Result 334 states and 505 transitions. [2021-08-29 03:33:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-29 03:33:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:13,642 INFO L225 Difference]: With dead ends: 334 [2021-08-29 03:33:13,643 INFO L226 Difference]: Without dead ends: 185 [2021-08-29 03:33:13,643 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:13,643 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 382.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.29ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:13,644 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 459.29ms Time] [2021-08-29 03:33:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-29 03:33:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2021-08-29 03:33:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.5029940119760479) internal successors, (251), 167 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 251 transitions. [2021-08-29 03:33:13,647 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 251 transitions. Word has length 66 [2021-08-29 03:33:13,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:13,648 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 251 transitions. [2021-08-29 03:33:13,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:13,648 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 251 transitions. [2021-08-29 03:33:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-08-29 03:33:13,648 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:13,648 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:13,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-29 03:33:13,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1605102745, now seen corresponding path program 1 times [2021-08-29 03:33:13,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:13,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106601804] [2021-08-29 03:33:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:13,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:13,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:13,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106601804] [2021-08-29 03:33:13,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106601804] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:13,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:13,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:13,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966142337] [2021-08-29 03:33:13,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:13,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:13,694 INFO L87 Difference]: Start difference. First operand 168 states and 251 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) [2021-08-29 03:33:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:14,165 INFO L93 Difference]: Finished difference Result 334 states and 503 transitions. [2021-08-29 03:33:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:14,165 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 67 [2021-08-29 03:33:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:14,166 INFO L225 Difference]: With dead ends: 334 [2021-08-29 03:33:14,166 INFO L226 Difference]: Without dead ends: 185 [2021-08-29 03:33:14,167 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:14,167 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 358.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.21ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:14,167 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 445.21ms Time] [2021-08-29 03:33:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-29 03:33:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2021-08-29 03:33:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.4970059880239521) internal successors, (250), 167 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 250 transitions. [2021-08-29 03:33:14,172 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 250 transitions. Word has length 67 [2021-08-29 03:33:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:14,172 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 250 transitions. [2021-08-29 03:33:14,173 INFO L471 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) [2021-08-29 03:33:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 250 transitions. [2021-08-29 03:33:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-08-29 03:33:14,173 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:14,174 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:14,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-29 03:33:14,174 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash 775324969, now seen corresponding path program 1 times [2021-08-29 03:33:14,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:14,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854441145] [2021-08-29 03:33:14,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:14,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:14,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:14,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854441145] [2021-08-29 03:33:14,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854441145] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:14,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:14,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:14,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293688400] [2021-08-29 03:33:14,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:14,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:14,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:14,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:14,210 INFO L87 Difference]: Start difference. First operand 168 states and 250 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:14,673 INFO L93 Difference]: Finished difference Result 334 states and 501 transitions. [2021-08-29 03:33:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-08-29 03:33:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:14,674 INFO L225 Difference]: With dead ends: 334 [2021-08-29 03:33:14,674 INFO L226 Difference]: Without dead ends: 185 [2021-08-29 03:33:14,675 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:14,675 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 371.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 446.33ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:14,675 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 446.33ms Time] [2021-08-29 03:33:14,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-29 03:33:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2021-08-29 03:33:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.4910179640718564) internal successors, (249), 167 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2021-08-29 03:33:14,679 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 68 [2021-08-29 03:33:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:14,679 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2021-08-29 03:33:14,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2021-08-29 03:33:14,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-29 03:33:14,680 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:14,680 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-29 03:33:14,680 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1235689452, now seen corresponding path program 1 times [2021-08-29 03:33:14,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:14,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135030017] [2021-08-29 03:33:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:14,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:14,723 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:14,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:14,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135030017] [2021-08-29 03:33:14,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135030017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:14,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:14,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:14,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103453067] [2021-08-29 03:33:14,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:14,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:14,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:14,726 INFO L87 Difference]: Start difference. First operand 168 states and 249 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) [2021-08-29 03:33:15,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:15,195 INFO L93 Difference]: Finished difference Result 324 states and 486 transitions. [2021-08-29 03:33:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:15,195 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 [2021-08-29 03:33:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:15,196 INFO L225 Difference]: With dead ends: 324 [2021-08-29 03:33:15,196 INFO L226 Difference]: Without dead ends: 175 [2021-08-29 03:33:15,196 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:15,197 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 373.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 453.18ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:15,197 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 652 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [3 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 453.18ms Time] [2021-08-29 03:33:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-29 03:33:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2021-08-29 03:33:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.4850299401197604) internal successors, (248), 167 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:15,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 248 transitions. [2021-08-29 03:33:15,201 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 248 transitions. Word has length 69 [2021-08-29 03:33:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:15,202 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 248 transitions. [2021-08-29 03:33:15,202 INFO L471 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) [2021-08-29 03:33:15,202 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 248 transitions. [2021-08-29 03:33:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-29 03:33:15,203 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:15,203 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:15,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-29 03:33:15,203 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1988306166, now seen corresponding path program 1 times [2021-08-29 03:33:15,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:15,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872579623] [2021-08-29 03:33:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:15,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:15,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:15,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872579623] [2021-08-29 03:33:15,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872579623] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:15,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:15,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:15,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188254162] [2021-08-29 03:33:15,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:15,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:15,254 INFO L87 Difference]: Start difference. First operand 168 states and 248 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:15,877 INFO L93 Difference]: Finished difference Result 424 states and 639 transitions. [2021-08-29 03:33:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:15,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-08-29 03:33:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:15,879 INFO L225 Difference]: With dead ends: 424 [2021-08-29 03:33:15,879 INFO L226 Difference]: Without dead ends: 275 [2021-08-29 03:33:15,879 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:15,880 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 106 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 487.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.08ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 598.98ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:15,880 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 0 Invalid, 749 Unknown, 0 Unchecked, 2.08ms Time], IncrementalHoareTripleChecker [14 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 598.98ms Time] [2021-08-29 03:33:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-08-29 03:33:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2021-08-29 03:33:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.5228426395939085) internal successors, (300), 197 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 300 transitions. [2021-08-29 03:33:15,886 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 300 transitions. Word has length 74 [2021-08-29 03:33:15,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:15,886 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 300 transitions. [2021-08-29 03:33:15,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:15,887 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 300 transitions. [2021-08-29 03:33:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-29 03:33:15,887 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:15,888 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:15,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-29 03:33:15,888 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:15,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2060692724, now seen corresponding path program 1 times [2021-08-29 03:33:15,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:15,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116661529] [2021-08-29 03:33:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:15,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:15,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:15,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116661529] [2021-08-29 03:33:15,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116661529] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:15,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:15,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:15,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919998918] [2021-08-29 03:33:15,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:15,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:15,981 INFO L87 Difference]: Start difference. First operand 198 states and 300 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:16,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:16,559 INFO L93 Difference]: Finished difference Result 427 states and 655 transitions. [2021-08-29 03:33:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:16,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-08-29 03:33:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:16,561 INFO L225 Difference]: With dead ends: 427 [2021-08-29 03:33:16,561 INFO L226 Difference]: Without dead ends: 248 [2021-08-29 03:33:16,562 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:16,562 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 456.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 558.02ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:16,563 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 789 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [9 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 558.02ms Time] [2021-08-29 03:33:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-08-29 03:33:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 222. [2021-08-29 03:33:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 221 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) [2021-08-29 03:33:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 342 transitions. [2021-08-29 03:33:16,568 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 342 transitions. Word has length 74 [2021-08-29 03:33:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:16,568 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 342 transitions. [2021-08-29 03:33:16,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 342 transitions. [2021-08-29 03:33:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-29 03:33:16,569 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:16,570 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:16,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-29 03:33:16,570 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:16,571 INFO L82 PathProgramCache]: Analyzing trace with hash 880688961, now seen corresponding path program 1 times [2021-08-29 03:33:16,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:16,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618159559] [2021-08-29 03:33:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:16,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:16,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:16,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618159559] [2021-08-29 03:33:16,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618159559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:16,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:16,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:16,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284770592] [2021-08-29 03:33:16,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:16,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:16,629 INFO L87 Difference]: Start difference. First operand 222 states and 342 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:17,220 INFO L93 Difference]: Finished difference Result 494 states and 761 transitions. [2021-08-29 03:33:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-29 03:33:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:17,222 INFO L225 Difference]: With dead ends: 494 [2021-08-29 03:33:17,222 INFO L226 Difference]: Without dead ends: 291 [2021-08-29 03:33:17,223 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:17,223 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 478.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 569.09ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:17,224 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 717 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [14 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 569.09ms Time] [2021-08-29 03:33:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-08-29 03:33:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 223. [2021-08-29 03:33:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.545045045045045) internal successors, (343), 222 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 343 transitions. [2021-08-29 03:33:17,231 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 343 transitions. Word has length 75 [2021-08-29 03:33:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:17,231 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 343 transitions. [2021-08-29 03:33:17,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 343 transitions. [2021-08-29 03:33:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-29 03:33:17,232 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:17,233 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:17,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-29 03:33:17,233 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash 301633263, now seen corresponding path program 1 times [2021-08-29 03:33:17,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:17,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136610795] [2021-08-29 03:33:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:17,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:17,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:17,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136610795] [2021-08-29 03:33:17,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136610795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:17,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:17,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:17,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606063180] [2021-08-29 03:33:17,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:17,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:17,285 INFO L87 Difference]: Start difference. First operand 223 states and 343 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2021-08-29 03:33:17,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:17,828 INFO L93 Difference]: Finished difference Result 495 states and 761 transitions. [2021-08-29 03:33:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 81 [2021-08-29 03:33:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:17,831 INFO L225 Difference]: With dead ends: 495 [2021-08-29 03:33:17,831 INFO L226 Difference]: Without dead ends: 291 [2021-08-29 03:33:17,832 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.16ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:17,832 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 437.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 522.83ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:17,833 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 717 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [14 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 522.83ms Time] [2021-08-29 03:33:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-08-29 03:33:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 233. [2021-08-29 03:33:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5603448275862069) internal successors, (362), 232 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 362 transitions. [2021-08-29 03:33:17,838 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 362 transitions. Word has length 81 [2021-08-29 03:33:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:17,839 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 362 transitions. [2021-08-29 03:33:17,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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) [2021-08-29 03:33:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 362 transitions. [2021-08-29 03:33:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-29 03:33:17,840 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:17,840 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:17,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-29 03:33:17,840 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:17,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:17,841 INFO L82 PathProgramCache]: Analyzing trace with hash 542590269, now seen corresponding path program 1 times [2021-08-29 03:33:17,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:17,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269884335] [2021-08-29 03:33:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:17,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:17,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:17,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269884335] [2021-08-29 03:33:17,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269884335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:17,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:17,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:17,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802607457] [2021-08-29 03:33:17,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:17,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:17,890 INFO L87 Difference]: Start difference. First operand 233 states and 362 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) [2021-08-29 03:33:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:18,482 INFO L93 Difference]: Finished difference Result 497 states and 768 transitions. [2021-08-29 03:33:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:18,485 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 [2021-08-29 03:33:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:18,486 INFO L225 Difference]: With dead ends: 497 [2021-08-29 03:33:18,486 INFO L226 Difference]: Without dead ends: 283 [2021-08-29 03:33:18,487 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.54ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:18,487 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 481.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 569.40ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:18,491 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [13 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 569.40ms Time] [2021-08-29 03:33:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-29 03:33:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2021-08-29 03:33:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.55793991416309) internal successors, (363), 233 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 363 transitions. [2021-08-29 03:33:18,498 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 363 transitions. Word has length 82 [2021-08-29 03:33:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 363 transitions. [2021-08-29 03:33:18,498 INFO L471 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) [2021-08-29 03:33:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 363 transitions. [2021-08-29 03:33:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-08-29 03:33:18,499 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:18,499 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:18,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-29 03:33:18,500 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:18,500 INFO L82 PathProgramCache]: Analyzing trace with hash 354437512, now seen corresponding path program 1 times [2021-08-29 03:33:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:18,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415344701] [2021-08-29 03:33:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:18,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:18,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:18,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415344701] [2021-08-29 03:33:18,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415344701] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:18,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:18,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168977510] [2021-08-29 03:33:18,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:18,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:18,554 INFO L87 Difference]: Start difference. First operand 234 states and 363 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:19,075 INFO L93 Difference]: Finished difference Result 498 states and 768 transitions. [2021-08-29 03:33:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:19,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-08-29 03:33:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:19,076 INFO L225 Difference]: With dead ends: 498 [2021-08-29 03:33:19,076 INFO L226 Difference]: Without dead ends: 283 [2021-08-29 03:33:19,077 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:19,077 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 414.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 502.50ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:19,078 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 720 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [13 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 502.50ms Time] [2021-08-29 03:33:19,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-29 03:33:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2021-08-29 03:33:19,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.553648068669528) internal successors, (362), 233 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 362 transitions. [2021-08-29 03:33:19,083 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 362 transitions. Word has length 87 [2021-08-29 03:33:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:19,083 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 362 transitions. [2021-08-29 03:33:19,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 362 transitions. [2021-08-29 03:33:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-08-29 03:33:19,084 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:19,085 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:19,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-29 03:33:19,085 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2012257082, now seen corresponding path program 1 times [2021-08-29 03:33:19,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:19,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510807887] [2021-08-29 03:33:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:19,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:19,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:19,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510807887] [2021-08-29 03:33:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510807887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:19,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677897089] [2021-08-29 03:33:19,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:19,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:19,130 INFO L87 Difference]: Start difference. First operand 234 states and 362 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:19,603 INFO L93 Difference]: Finished difference Result 475 states and 736 transitions. [2021-08-29 03:33:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-08-29 03:33:19,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:19,604 INFO L225 Difference]: With dead ends: 475 [2021-08-29 03:33:19,604 INFO L226 Difference]: Without dead ends: 260 [2021-08-29 03:33:19,604 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:19,605 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 378.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 457.29ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:19,605 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 787 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [9 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 457.29ms Time] [2021-08-29 03:33:19,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-08-29 03:33:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 234. [2021-08-29 03:33:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2021-08-29 03:33:19,610 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 87 [2021-08-29 03:33:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:19,610 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2021-08-29 03:33:19,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2021-08-29 03:33:19,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:19,612 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:19,612 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:19,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-29 03:33:19,612 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:19,613 INFO L82 PathProgramCache]: Analyzing trace with hash 2010828614, now seen corresponding path program 1 times [2021-08-29 03:33:19,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:19,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317480032] [2021-08-29 03:33:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:19,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:19,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:19,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317480032] [2021-08-29 03:33:19,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317480032] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:19,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:19,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:19,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120154828] [2021-08-29 03:33:19,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:19,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:19,654 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:20,167 INFO L93 Difference]: Finished difference Result 497 states and 763 transitions. [2021-08-29 03:33:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:20,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:20,169 INFO L225 Difference]: With dead ends: 497 [2021-08-29 03:33:20,169 INFO L226 Difference]: Without dead ends: 282 [2021-08-29 03:33:20,169 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:20,170 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 393.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 494.26ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:20,170 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 714 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [12 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 494.26ms Time] [2021-08-29 03:33:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-08-29 03:33:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 234. [2021-08-29 03:33:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5450643776824033) internal successors, (360), 233 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2021-08-29 03:33:20,175 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 88 [2021-08-29 03:33:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:20,176 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2021-08-29 03:33:20,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2021-08-29 03:33:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:20,177 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:20,177 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:20,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-29 03:33:20,177 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1947077233, now seen corresponding path program 1 times [2021-08-29 03:33:20,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:20,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269817018] [2021-08-29 03:33:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:20,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:20,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:20,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269817018] [2021-08-29 03:33:20,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269817018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:20,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:20,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:20,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887750877] [2021-08-29 03:33:20,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:20,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:20,224 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:20,731 INFO L93 Difference]: Finished difference Result 495 states and 759 transitions. [2021-08-29 03:33:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:20,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:20,732 INFO L225 Difference]: With dead ends: 495 [2021-08-29 03:33:20,732 INFO L226 Difference]: Without dead ends: 280 [2021-08-29 03:33:20,733 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:20,733 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 93 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 417.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 491.44ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:20,733 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 0 Invalid, 713 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [11 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 491.44ms Time] [2021-08-29 03:33:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-08-29 03:33:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2021-08-29 03:33:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5407725321888412) internal successors, (359), 233 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 359 transitions. [2021-08-29 03:33:20,738 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 359 transitions. Word has length 88 [2021-08-29 03:33:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:20,739 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 359 transitions. [2021-08-29 03:33:20,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 359 transitions. [2021-08-29 03:33:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:20,740 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:20,740 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:20,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-29 03:33:20,740 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:20,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1807744591, now seen corresponding path program 1 times [2021-08-29 03:33:20,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:20,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174480775] [2021-08-29 03:33:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:20,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:20,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:20,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174480775] [2021-08-29 03:33:20,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174480775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:20,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:20,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:20,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118150394] [2021-08-29 03:33:20,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:20,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:20,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:20,783 INFO L87 Difference]: Start difference. First operand 234 states and 359 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:21,255 INFO L93 Difference]: Finished difference Result 494 states and 756 transitions. [2021-08-29 03:33:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:21,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:21,256 INFO L225 Difference]: With dead ends: 494 [2021-08-29 03:33:21,256 INFO L226 Difference]: Without dead ends: 279 [2021-08-29 03:33:21,257 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:21,257 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 91 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 384.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 456.42ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:21,258 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 0 Invalid, 713 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [11 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 456.42ms Time] [2021-08-29 03:33:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-08-29 03:33:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 234. [2021-08-29 03:33:21,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.536480686695279) internal successors, (358), 233 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 358 transitions. [2021-08-29 03:33:21,263 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 358 transitions. Word has length 88 [2021-08-29 03:33:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:21,263 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 358 transitions. [2021-08-29 03:33:21,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 358 transitions. [2021-08-29 03:33:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:21,264 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:21,264 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:21,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-29 03:33:21,264 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1418559526, now seen corresponding path program 1 times [2021-08-29 03:33:21,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:21,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349280420] [2021-08-29 03:33:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:21,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-29 03:33:21,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:21,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349280420] [2021-08-29 03:33:21,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349280420] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:21,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:21,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 03:33:21,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113253712] [2021-08-29 03:33:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 03:33:21,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 03:33:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:21,320 INFO L87 Difference]: Start difference. First operand 234 states and 358 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:21,817 INFO L93 Difference]: Finished difference Result 470 states and 724 transitions. [2021-08-29 03:33:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 03:33:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:21,819 INFO L225 Difference]: With dead ends: 470 [2021-08-29 03:33:21,819 INFO L226 Difference]: Without dead ends: 255 [2021-08-29 03:33:21,819 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.64ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:33:21,819 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 152 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.56ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 472.21ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:21,820 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 0 Invalid, 696 Unknown, 0 Unchecked, 1.56ms Time], IncrementalHoareTripleChecker [42 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 472.21ms Time] [2021-08-29 03:33:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-08-29 03:33:21,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-08-29 03:33:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.517786561264822) internal successors, (384), 253 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2021-08-29 03:33:21,824 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 88 [2021-08-29 03:33:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:21,825 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2021-08-29 03:33:21,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2021-08-29 03:33:21,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:21,825 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:21,826 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:21,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-29 03:33:21,826 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1593988851, now seen corresponding path program 1 times [2021-08-29 03:33:21,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:21,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106277118] [2021-08-29 03:33:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:21,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:21,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:21,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106277118] [2021-08-29 03:33:21,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106277118] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:21,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:21,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:21,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351347691] [2021-08-29 03:33:21,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:21,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:21,881 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:22,316 INFO L93 Difference]: Finished difference Result 512 states and 776 transitions. [2021-08-29 03:33:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:22,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:22,318 INFO L225 Difference]: With dead ends: 512 [2021-08-29 03:33:22,318 INFO L226 Difference]: Without dead ends: 277 [2021-08-29 03:33:22,318 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:22,319 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 343.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 419.10ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:22,319 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 766 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [7 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 419.10ms Time] [2021-08-29 03:33:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-29 03:33:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 254. [2021-08-29 03:33:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5138339920948616) internal successors, (383), 253 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2021-08-29 03:33:22,325 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 88 [2021-08-29 03:33:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:22,326 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2021-08-29 03:33:22,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2021-08-29 03:33:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-29 03:33:22,327 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:22,327 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-08-29 03:33:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-29 03:33:22,327 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:22,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2134134323, now seen corresponding path program 1 times [2021-08-29 03:33:22,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:22,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535900469] [2021-08-29 03:33:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:22,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:22,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:22,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535900469] [2021-08-29 03:33:22,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535900469] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:22,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:22,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:22,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008097455] [2021-08-29 03:33:22,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:22,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:22,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:22,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:22,370 INFO L87 Difference]: Start difference. First operand 254 states and 383 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:22,923 INFO L93 Difference]: Finished difference Result 511 states and 773 transitions. [2021-08-29 03:33:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:22,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-29 03:33:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:22,924 INFO L225 Difference]: With dead ends: 511 [2021-08-29 03:33:22,924 INFO L226 Difference]: Without dead ends: 276 [2021-08-29 03:33:22,925 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:22,925 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 436.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 531.38ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:22,926 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 766 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [7 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 531.38ms Time] [2021-08-29 03:33:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-08-29 03:33:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2021-08-29 03:33:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5098814229249011) internal successors, (382), 253 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2021-08-29 03:33:22,931 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 88 [2021-08-29 03:33:22,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:22,931 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2021-08-29 03:33:22,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:22,931 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2021-08-29 03:33:22,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-29 03:33:22,932 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:22,932 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:22,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-29 03:33:22,932 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:22,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1582169212, now seen corresponding path program 1 times [2021-08-29 03:33:22,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:22,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771167092] [2021-08-29 03:33:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:22,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:22,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:22,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771167092] [2021-08-29 03:33:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771167092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:22,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:22,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:22,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017513800] [2021-08-29 03:33:22,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:22,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:22,985 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:23,467 INFO L93 Difference]: Finished difference Result 534 states and 801 transitions. [2021-08-29 03:33:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-08-29 03:33:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:23,468 INFO L225 Difference]: With dead ends: 534 [2021-08-29 03:33:23,468 INFO L226 Difference]: Without dead ends: 299 [2021-08-29 03:33:23,469 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:23,469 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 385.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.12ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:23,470 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 738 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [11 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 463.12ms Time] [2021-08-29 03:33:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-08-29 03:33:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2021-08-29 03:33:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 253 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 381 transitions. [2021-08-29 03:33:23,475 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 381 transitions. Word has length 89 [2021-08-29 03:33:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:23,476 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 381 transitions. [2021-08-29 03:33:23,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 381 transitions. [2021-08-29 03:33:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-29 03:33:23,477 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:23,477 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:23,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-29 03:33:23,477 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:23,478 INFO L82 PathProgramCache]: Analyzing trace with hash 356992834, now seen corresponding path program 1 times [2021-08-29 03:33:23,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:23,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321300182] [2021-08-29 03:33:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:23,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:23,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:23,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321300182] [2021-08-29 03:33:23,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321300182] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:23,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:23,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:23,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861070970] [2021-08-29 03:33:23,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:23,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:23,520 INFO L87 Difference]: Start difference. First operand 254 states and 381 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:24,070 INFO L93 Difference]: Finished difference Result 511 states and 769 transitions. [2021-08-29 03:33:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-08-29 03:33:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:24,071 INFO L225 Difference]: With dead ends: 511 [2021-08-29 03:33:24,071 INFO L226 Difference]: Without dead ends: 276 [2021-08-29 03:33:24,072 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:24,072 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 446.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 530.44ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:24,072 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [7 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 530.44ms Time] [2021-08-29 03:33:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-08-29 03:33:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2021-08-29 03:33:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 253 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2021-08-29 03:33:24,080 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 89 [2021-08-29 03:33:24,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:24,080 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2021-08-29 03:33:24,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2021-08-29 03:33:24,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-29 03:33:24,081 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:24,082 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:24,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-29 03:33:24,082 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2129784979, now seen corresponding path program 1 times [2021-08-29 03:33:24,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:24,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419165953] [2021-08-29 03:33:24,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:24,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:24,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:24,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419165953] [2021-08-29 03:33:24,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419165953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:24,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:24,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:24,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585287577] [2021-08-29 03:33:24,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:24,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:24,131 INFO L87 Difference]: Start difference. First operand 254 states and 380 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:24,718 INFO L93 Difference]: Finished difference Result 534 states and 797 transitions. [2021-08-29 03:33:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-08-29 03:33:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:24,719 INFO L225 Difference]: With dead ends: 534 [2021-08-29 03:33:24,719 INFO L226 Difference]: Without dead ends: 299 [2021-08-29 03:33:24,719 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:24,720 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 475.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 564.39ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:24,720 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 738 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [11 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 564.39ms Time] [2021-08-29 03:33:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-08-29 03:33:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2021-08-29 03:33:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4980237154150198) internal successors, (379), 253 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2021-08-29 03:33:24,726 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 90 [2021-08-29 03:33:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:24,727 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2021-08-29 03:33:24,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2021-08-29 03:33:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-29 03:33:24,728 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:24,728 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:24,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-29 03:33:24,728 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2145303697, now seen corresponding path program 1 times [2021-08-29 03:33:24,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:24,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396426996] [2021-08-29 03:33:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:24,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:24,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:24,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396426996] [2021-08-29 03:33:24,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396426996] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:24,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:24,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:24,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003204697] [2021-08-29 03:33:24,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:24,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:24,791 INFO L87 Difference]: Start difference. First operand 254 states and 379 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:25,255 INFO L93 Difference]: Finished difference Result 511 states and 765 transitions. [2021-08-29 03:33:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-08-29 03:33:25,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:25,257 INFO L225 Difference]: With dead ends: 511 [2021-08-29 03:33:25,257 INFO L226 Difference]: Without dead ends: 276 [2021-08-29 03:33:25,257 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:25,258 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 447.68ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:25,258 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 762 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [7 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 447.68ms Time] [2021-08-29 03:33:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-08-29 03:33:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2021-08-29 03:33:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4940711462450593) internal successors, (378), 253 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 378 transitions. [2021-08-29 03:33:25,263 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 378 transitions. Word has length 90 [2021-08-29 03:33:25,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:25,266 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 378 transitions. [2021-08-29 03:33:25,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,266 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 378 transitions. [2021-08-29 03:33:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-08-29 03:33:25,267 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:25,267 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:25,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-29 03:33:25,267 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1086928127, now seen corresponding path program 1 times [2021-08-29 03:33:25,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:25,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951074693] [2021-08-29 03:33:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:25,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:25,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:25,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951074693] [2021-08-29 03:33:25,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951074693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:25,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:25,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:25,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839716104] [2021-08-29 03:33:25,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:25,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:25,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:25,329 INFO L87 Difference]: Start difference. First operand 254 states and 378 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:25,813 INFO L93 Difference]: Finished difference Result 534 states and 793 transitions. [2021-08-29 03:33:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:25,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-08-29 03:33:25,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:25,815 INFO L225 Difference]: With dead ends: 534 [2021-08-29 03:33:25,815 INFO L226 Difference]: Without dead ends: 299 [2021-08-29 03:33:25,815 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:25,815 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 92 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 386.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.23ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 465.21ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:25,816 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 0 Invalid, 738 Unknown, 0 Unchecked, 1.23ms Time], IncrementalHoareTripleChecker [11 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 465.21ms Time] [2021-08-29 03:33:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-08-29 03:33:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2021-08-29 03:33:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4901185770750989) internal successors, (377), 253 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 377 transitions. [2021-08-29 03:33:25,822 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 377 transitions. Word has length 91 [2021-08-29 03:33:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:25,822 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 377 transitions. [2021-08-29 03:33:25,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 377 transitions. [2021-08-29 03:33:25,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-08-29 03:33:25,823 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:25,823 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:25,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-29 03:33:25,824 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:25,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:25,824 INFO L82 PathProgramCache]: Analyzing trace with hash 605847869, now seen corresponding path program 1 times [2021-08-29 03:33:25,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:25,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107828651] [2021-08-29 03:33:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:25,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:25,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:25,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107828651] [2021-08-29 03:33:25,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107828651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:25,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:25,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:25,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208612162] [2021-08-29 03:33:25,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:25,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:25,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:25,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:25,865 INFO L87 Difference]: Start difference. First operand 254 states and 377 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:26,377 INFO L93 Difference]: Finished difference Result 511 states and 761 transitions. [2021-08-29 03:33:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-08-29 03:33:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:26,378 INFO L225 Difference]: With dead ends: 511 [2021-08-29 03:33:26,378 INFO L226 Difference]: Without dead ends: 276 [2021-08-29 03:33:26,378 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.07ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:26,379 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 398.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 489.28ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:26,379 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 760 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [7 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 489.28ms Time] [2021-08-29 03:33:26,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-08-29 03:33:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2021-08-29 03:33:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4861660079051384) internal successors, (376), 253 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2021-08-29 03:33:26,385 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 91 [2021-08-29 03:33:26,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:26,385 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2021-08-29 03:33:26,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,385 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2021-08-29 03:33:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-08-29 03:33:26,386 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:26,386 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:26,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-29 03:33:26,387 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:26,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:26,387 INFO L82 PathProgramCache]: Analyzing trace with hash 738752008, now seen corresponding path program 1 times [2021-08-29 03:33:26,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:26,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272967733] [2021-08-29 03:33:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:26,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:26,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:26,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272967733] [2021-08-29 03:33:26,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272967733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:26,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:26,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:26,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325093316] [2021-08-29 03:33:26,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:26,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:26,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:26,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:26,429 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:26,860 INFO L93 Difference]: Finished difference Result 524 states and 777 transitions. [2021-08-29 03:33:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:26,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-08-29 03:33:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:26,862 INFO L225 Difference]: With dead ends: 524 [2021-08-29 03:33:26,862 INFO L226 Difference]: Without dead ends: 289 [2021-08-29 03:33:26,862 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:26,863 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 344.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 414.90ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:26,863 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 709 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [7 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 414.90ms Time] [2021-08-29 03:33:26,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-29 03:33:26,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-08-29 03:33:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.482213438735178) internal successors, (375), 253 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-08-29 03:33:26,869 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 92 [2021-08-29 03:33:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:26,869 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-08-29 03:33:26,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-08-29 03:33:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-08-29 03:33:26,870 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:26,871 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:26,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-29 03:33:26,871 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:26,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:26,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1289834102, now seen corresponding path program 1 times [2021-08-29 03:33:26,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:26,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588192998] [2021-08-29 03:33:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:26,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:26,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:26,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588192998] [2021-08-29 03:33:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588192998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:26,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:26,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:26,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598314863] [2021-08-29 03:33:26,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:26,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:26,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:26,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:26,915 INFO L87 Difference]: Start difference. First operand 254 states and 375 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:27,391 INFO L93 Difference]: Finished difference Result 501 states and 745 transitions. [2021-08-29 03:33:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-08-29 03:33:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:27,393 INFO L225 Difference]: With dead ends: 501 [2021-08-29 03:33:27,393 INFO L226 Difference]: Without dead ends: 266 [2021-08-29 03:33:27,393 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:27,394 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 361.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 455.73ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:27,394 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 729 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [3 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 455.73ms Time] [2021-08-29 03:33:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-08-29 03:33:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 254. [2021-08-29 03:33:27,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4782608695652173) internal successors, (374), 253 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 374 transitions. [2021-08-29 03:33:27,400 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 374 transitions. Word has length 92 [2021-08-29 03:33:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:27,401 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 374 transitions. [2021-08-29 03:33:27,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 374 transitions. [2021-08-29 03:33:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-29 03:33:27,402 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:27,402 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:27,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-29 03:33:27,402 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1110599922, now seen corresponding path program 1 times [2021-08-29 03:33:27,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:27,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028892983] [2021-08-29 03:33:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:27,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:27,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:27,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028892983] [2021-08-29 03:33:27,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028892983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:27,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:27,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:33:27,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655472288] [2021-08-29 03:33:27,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:27,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:27,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:27,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:27,447 INFO L87 Difference]: Start difference. First operand 254 states and 374 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:27,910 INFO L93 Difference]: Finished difference Result 524 states and 773 transitions. [2021-08-29 03:33:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-08-29 03:33:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:27,912 INFO L225 Difference]: With dead ends: 524 [2021-08-29 03:33:27,912 INFO L226 Difference]: Without dead ends: 289 [2021-08-29 03:33:27,912 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:33:27,912 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 73 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 356.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.12ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:27,913 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 0 Invalid, 725 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [7 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 445.12ms Time] [2021-08-29 03:33:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-29 03:33:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-08-29 03:33:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4743083003952568) internal successors, (373), 253 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2021-08-29 03:33:27,918 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 96 [2021-08-29 03:33:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:27,919 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2021-08-29 03:33:27,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2021-08-29 03:33:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-29 03:33:27,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:27,920 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:27,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-29 03:33:27,920 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 276185488, now seen corresponding path program 1 times [2021-08-29 03:33:27,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:27,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146415175] [2021-08-29 03:33:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:27,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-29 03:33:27,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:27,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146415175] [2021-08-29 03:33:27,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146415175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:27,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:27,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:27,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096967089] [2021-08-29 03:33:27,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:27,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:27,960 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:28,382 INFO L93 Difference]: Finished difference Result 719 states and 1071 transitions. [2021-08-29 03:33:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:28,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-08-29 03:33:28,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:28,385 INFO L225 Difference]: With dead ends: 719 [2021-08-29 03:33:28,385 INFO L226 Difference]: Without dead ends: 484 [2021-08-29 03:33:28,385 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:28,386 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 322.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 405.52ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:28,386 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 461 Unknown, 0 Unchecked, 0.59ms Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 405.52ms Time] [2021-08-29 03:33:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-08-29 03:33:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-08-29 03:33:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.4699792960662525) internal successors, (710), 483 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 710 transitions. [2021-08-29 03:33:28,397 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 710 transitions. Word has length 96 [2021-08-29 03:33:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:28,397 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 710 transitions. [2021-08-29 03:33:28,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 710 transitions. [2021-08-29 03:33:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-29 03:33:28,398 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:28,399 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:28,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-29 03:33:28,399 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:28,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1537102738, now seen corresponding path program 1 times [2021-08-29 03:33:28,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:28,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800693817] [2021-08-29 03:33:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:28,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-29 03:33:28,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:28,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800693817] [2021-08-29 03:33:28,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800693817] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:28,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:28,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:28,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285001824] [2021-08-29 03:33:28,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:28,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:28,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:28,430 INFO L87 Difference]: Start difference. First operand 484 states and 710 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:28,780 INFO L93 Difference]: Finished difference Result 976 states and 1435 transitions. [2021-08-29 03:33:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-08-29 03:33:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:28,782 INFO L225 Difference]: With dead ends: 976 [2021-08-29 03:33:28,782 INFO L226 Difference]: Without dead ends: 511 [2021-08-29 03:33:28,783 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:28,783 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 273.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.64ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:28,783 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 427 Unknown, 0 Unchecked, 0.56ms Time], IncrementalHoareTripleChecker [1 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 332.64ms Time] [2021-08-29 03:33:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-08-29 03:33:28,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2021-08-29 03:33:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.4607843137254901) internal successors, (745), 510 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 745 transitions. [2021-08-29 03:33:28,794 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 745 transitions. Word has length 96 [2021-08-29 03:33:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:28,794 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 745 transitions. [2021-08-29 03:33:28,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 745 transitions. [2021-08-29 03:33:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-29 03:33:28,795 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:28,796 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:28,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-29 03:33:28,796 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:28,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:28,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1564168340, now seen corresponding path program 1 times [2021-08-29 03:33:28,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:28,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586525686] [2021-08-29 03:33:28,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:28,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-08-29 03:33:28,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:28,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586525686] [2021-08-29 03:33:28,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586525686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:28,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:28,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454059251] [2021-08-29 03:33:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:28,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:28,826 INFO L87 Difference]: Start difference. First operand 511 states and 745 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:29,107 INFO L93 Difference]: Finished difference Result 1005 states and 1471 transitions. [2021-08-29 03:33:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:29,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-08-29 03:33:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:29,108 INFO L225 Difference]: With dead ends: 1005 [2021-08-29 03:33:29,108 INFO L226 Difference]: Without dead ends: 513 [2021-08-29 03:33:29,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:29,109 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 214.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 267.23ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:29,109 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 404 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 267.23ms Time] [2021-08-29 03:33:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-08-29 03:33:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2021-08-29 03:33:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.458984375) internal successors, (747), 512 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:29,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 747 transitions. [2021-08-29 03:33:29,120 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 747 transitions. Word has length 96 [2021-08-29 03:33:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:29,121 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 747 transitions. [2021-08-29 03:33:29,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 747 transitions. [2021-08-29 03:33:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-29 03:33:29,122 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:29,122 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:29,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-29 03:33:29,123 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:29,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:29,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1173556134, now seen corresponding path program 1 times [2021-08-29 03:33:29,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:29,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995535392] [2021-08-29 03:33:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:29,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-08-29 03:33:29,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:29,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995535392] [2021-08-29 03:33:29,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995535392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:29,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:29,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:29,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806247818] [2021-08-29 03:33:29,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:29,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:29,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:29,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:29,163 INFO L87 Difference]: Start difference. First operand 513 states and 747 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2021-08-29 03:33:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:29,582 INFO L93 Difference]: Finished difference Result 1240 states and 1821 transitions. [2021-08-29 03:33:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 98 [2021-08-29 03:33:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:29,585 INFO L225 Difference]: With dead ends: 1240 [2021-08-29 03:33:29,585 INFO L226 Difference]: Without dead ends: 748 [2021-08-29 03:33:29,586 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:29,586 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 299.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 394.91ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:29,587 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 410 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [13 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 394.91ms Time] [2021-08-29 03:33:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-08-29 03:33:29,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2021-08-29 03:33:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 745 states have (on average 1.4697986577181208) internal successors, (1095), 745 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2021-08-29 03:33:29,601 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 98 [2021-08-29 03:33:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:29,602 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2021-08-29 03:33:29,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2021-08-29 03:33:29,602 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2021-08-29 03:33:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-29 03:33:29,603 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:29,603 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:29,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-29 03:33:29,604 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:29,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1825940577, now seen corresponding path program 1 times [2021-08-29 03:33:29,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:29,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303219144] [2021-08-29 03:33:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:29,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-08-29 03:33:29,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:29,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303219144] [2021-08-29 03:33:29,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303219144] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:29,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:29,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:29,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356289984] [2021-08-29 03:33:29,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:29,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:29,644 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:30,110 INFO L93 Difference]: Finished difference Result 1706 states and 2515 transitions. [2021-08-29 03:33:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:30,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-29 03:33:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:30,113 INFO L225 Difference]: With dead ends: 1706 [2021-08-29 03:33:30,113 INFO L226 Difference]: Without dead ends: 981 [2021-08-29 03:33:30,114 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:30,114 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 353.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.70ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 442.22ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:30,114 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 602 Unknown, 0 Unchecked, 0.70ms Time], IncrementalHoareTripleChecker [9 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 442.22ms Time] [2021-08-29 03:33:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-08-29 03:33:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 979. [2021-08-29 03:33:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 978 states have (on average 1.4611451942740286) internal successors, (1429), 978 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1429 transitions. [2021-08-29 03:33:30,140 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1429 transitions. Word has length 105 [2021-08-29 03:33:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:30,140 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1429 transitions. [2021-08-29 03:33:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1429 transitions. [2021-08-29 03:33:30,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-29 03:33:30,142 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:30,142 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:30,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-29 03:33:30,143 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:30,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:30,143 INFO L82 PathProgramCache]: Analyzing trace with hash 315775349, now seen corresponding path program 1 times [2021-08-29 03:33:30,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:30,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346430639] [2021-08-29 03:33:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:30,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-08-29 03:33:30,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:33:30,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346430639] [2021-08-29 03:33:30,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346430639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:30,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:30,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:33:30,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233128177] [2021-08-29 03:33:30,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:33:30,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:33:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:33:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:30,195 INFO L87 Difference]: Start difference. First operand 979 states and 1429 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:30,616 INFO L93 Difference]: Finished difference Result 2170 states and 3182 transitions. [2021-08-29 03:33:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:33:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-08-29 03:33:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:30,621 INFO L225 Difference]: With dead ends: 2170 [2021-08-29 03:33:30,621 INFO L226 Difference]: Without dead ends: 1212 [2021-08-29 03:33:30,622 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:33:30,623 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 321.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 391.26ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:30,623 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 411 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [7 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 391.26ms Time] [2021-08-29 03:33:30,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-08-29 03:33:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2021-08-29 03:33:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 1.4649050371593724) internal successors, (1774), 1211 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1774 transitions. [2021-08-29 03:33:30,667 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1774 transitions. Word has length 122 [2021-08-29 03:33:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:30,668 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1774 transitions. [2021-08-29 03:33:30,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1774 transitions. [2021-08-29 03:33:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-08-29 03:33:30,670 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:30,670 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:30,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-29 03:33:30,670 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:30,671 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2021-08-29 03:33:30,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:33:30,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706686557] [2021-08-29 03:33:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:30,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:33:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:33:30,759 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 03:33:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:33:30,935 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 03:33:30,935 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 03:33:30,936 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:33:30,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-29 03:33:30,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:33:31,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:33:31 BoogieIcfgContainer [2021-08-29 03:33:31,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:33:31,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:33:31,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:33:31,076 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:33:31,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:04" (3/4) ... [2021-08-29 03:33:31,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 03:33:31,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:33:31,080 INFO L158 Benchmark]: Toolchain (without parser) took 28399.27ms. Allocated memory was 52.4MB in the beginning and 159.4MB in the end (delta: 107.0MB). Free memory was 27.1MB in the beginning and 63.2MB in the end (delta: -36.1MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,080 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:33:31,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.94ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 26.9MB in the beginning and 38.6MB in the end (delta: -11.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.13ms. Allocated memory is still 71.3MB. Free memory was 38.6MB in the beginning and 49.2MB in the end (delta: -10.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,081 INFO L158 Benchmark]: Boogie Preprocessor took 76.07ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 42.6MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,081 INFO L158 Benchmark]: RCFGBuilder took 623.08ms. Allocated memory is still 71.3MB. Free memory was 42.3MB in the beginning and 32.8MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,081 INFO L158 Benchmark]: TraceAbstraction took 26957.15ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 32.5MB in the beginning and 63.2MB in the end (delta: -30.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2021-08-29 03:33:31,081 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 159.4MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:33:31,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.94ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 26.9MB in the beginning and 38.6MB in the end (delta: -11.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.13ms. Allocated memory is still 71.3MB. Free memory was 38.6MB in the beginning and 49.2MB in the end (delta: -10.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.07ms. Allocated memory is still 71.3MB. Free memory was 49.2MB in the beginning and 42.6MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 623.08ms. Allocated memory is still 71.3MB. Free memory was 42.3MB in the beginning and 32.8MB in the end (delta: 9.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 26957.15ms. Allocated memory was 71.3MB in the beginning and 159.4MB in the end (delta: 88.1MB). Free memory was 32.5MB in the beginning and 63.2MB in the end (delta: -30.7MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 159.4MB. Free memory is still 63.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1728]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1446. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={5:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={5:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={5:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={5:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={5:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={5:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={5:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={5:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={5:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={5:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={5:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={5:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={5:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={5:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={5:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={5:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={5:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={5:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={5:0}] [L1728] reach_error() VAL [init=1, SSLv3_server_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26769.35ms, OverallIterations: 47, TraceHistogramMax: 5, EmptinessCheckTime: 59.47ms, AutomataDifference: 23277.82ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.78ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2847 SdHoareTripleChecker+Valid, 21996.87ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2847 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 18170.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13200 mSDsCounter, 406 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30118 IncrementalHoareTripleChecker+Invalid, 30524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 406 mSolverCounterUnsat, 0 mSDtfsCounter, 30118 mSolverCounterSat, 70.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 92 SyntacticMatches, 32 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 440.50ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1212occurred in iteration=46, InterpolantAutomatonStates: 180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 355.92ms AutomataMinimizationTime, 46 MinimizatonAttempts, 1099 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 207.17ms SsaConstructionTime, 626.49ms SatisfiabilityAnalysisTime, 1611.88ms InterpolantComputationTime, 3665 NumberOfCodeBlocks, 3665 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3492 ConstructedInterpolants, 0 QuantifiedInterpolants, 10701 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 PerfectInterpolantSequences, 2126/2126 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-29 03:33:31,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:33:33,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:33:33,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:33:33,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:33:33,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:33:33,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:33:33,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:33:33,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:33:33,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:33:33,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:33:33,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:33:33,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:33:33,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:33:33,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:33:33,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:33:33,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:33:33,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:33:33,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:33:33,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:33:33,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:33:33,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:33:33,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:33:33,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:33:33,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:33:33,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:33:33,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:33:33,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:33:33,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:33:33,150 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:33:33,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:33:33,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:33:33,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:33:33,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:33:33,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:33:33,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:33:33,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:33:33,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:33:33,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:33:33,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:33:33,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:33:33,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:33:33,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 03:33:33,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:33:33,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:33:33,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:33:33,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:33:33,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:33:33,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:33:33,201 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:33:33,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:33:33,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:33:33,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:33:33,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:33:33,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:33:33,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:33:33,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:33:33,203 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:33:33,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:33:33,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:33:33,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 03:33:33,205 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 03:33:33,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:33:33,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:33:33,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 03:33:33,206 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2021-08-29 03:33:33,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:33:33,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:33:33,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:33:33,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:33:33,525 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:33:33,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:33,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46ecccd3/5ddf2d49fc594da0a08c504a2a4efede/FLAGa091341be [2021-08-29 03:33:34,219 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:33:34,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:34,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46ecccd3/5ddf2d49fc594da0a08c504a2a4efede/FLAGa091341be [2021-08-29 03:33:34,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a46ecccd3/5ddf2d49fc594da0a08c504a2a4efede [2021-08-29 03:33:34,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:33:34,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:33:34,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:33:34,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:33:34,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:33:34,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:33:34" (1/1) ... [2021-08-29 03:33:34,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4b7604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:34, skipping insertion in model container [2021-08-29 03:33:34,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:33:34" (1/1) ... [2021-08-29 03:33:34,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:33:34,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:33:35,002 WARN L228 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.11.i.cil-1.c[73189,73202] [2021-08-29 03:33:35,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:33:35,046 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:33:35,180 WARN L228 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.11.i.cil-1.c[73189,73202] [2021-08-29 03:33:35,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:33:35,206 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:33:35,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35 WrapperNode [2021-08-29 03:33:35,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:33:35,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:33:35,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:33:35,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:33:35,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:33:35,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:33:35,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:33:35,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:33:35,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:33:35,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:33:35,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:33:35,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:33:35,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (1/1) ... [2021-08-29 03:33:35,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:33:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:33:35,441 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) [2021-08-29 03:33:35,443 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 [2021-08-29 03:33:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 03:33:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 03:33:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:33:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 03:33:35,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 03:33:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 03:33:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:33:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:33:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 03:33:35,651 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-29 03:33:36,017 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-29 03:33:36,017 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-29 03:33:36,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:33:36,027 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 03:33:36,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:36 BoogieIcfgContainer [2021-08-29 03:33:36,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:33:36,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:33:36,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:33:36,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:33:36,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:33:34" (1/3) ... [2021-08-29 03:33:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d0c1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:33:36, skipping insertion in model container [2021-08-29 03:33:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:33:35" (2/3) ... [2021-08-29 03:33:36,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d0c1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:33:36, skipping insertion in model container [2021-08-29 03:33:36,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:36" (3/3) ... [2021-08-29 03:33:36,035 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2021-08-29 03:33:36,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:33:36,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:33:36,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:33:36,100 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:33:36,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:33:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.7191780821917808) internal successors, (251), 147 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-29 03:33:36,139 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:36,140 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:36,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:36,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2021-08-29 03:33:36,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:33:36,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380519154] [2021-08-29 03:33:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:36,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:33:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:33:36,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:33:36,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 03:33:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:36,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:33:36,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:33:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:36,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:33:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:36,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:33:36,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380519154] [2021-08-29 03:33:36,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380519154] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:36,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:36,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:33:36,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880287380] [2021-08-29 03:33:36,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:36,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:33:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:36,740 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.7191780821917808) internal successors, (251), 147 states have internal predecessors, (251), 0 states have call successors, (0), 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 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:39,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:39,710 INFO L93 Difference]: Finished difference Result 561 states and 957 transitions. [2021-08-29 03:33:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:39,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-29 03:33:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:39,729 INFO L225 Difference]: With dead ends: 561 [2021-08-29 03:33:39,729 INFO L226 Difference]: Without dead ends: 382 [2021-08-29 03:33:39,733 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.80ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:39,750 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 603 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2460.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.34ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2861.32ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:39,751 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 0 Invalid, 729 Unknown, 0 Unchecked, 10.34ms Time], IncrementalHoareTripleChecker [27 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2861.32ms Time] [2021-08-29 03:33:39,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-08-29 03:33:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2021-08-29 03:33:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.5277044854881265) internal successors, (579), 379 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 579 transitions. [2021-08-29 03:33:39,824 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 579 transitions. Word has length 35 [2021-08-29 03:33:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:39,825 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 579 transitions. [2021-08-29 03:33:39,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 579 transitions. [2021-08-29 03:33:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-29 03:33:39,828 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:39,828 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:39,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 03:33:40,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:33:40,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1192573563, now seen corresponding path program 1 times [2021-08-29 03:33:40,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:33:40,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400879169] [2021-08-29 03:33:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:40,040 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:33:40,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:33:40,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:33:40,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 03:33:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:40,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:33:40,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:33:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:40,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:33:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:33:40,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:33:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400879169] [2021-08-29 03:33:40,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400879169] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:40,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:40,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:33:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806572083] [2021-08-29 03:33:40,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:40,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:33:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:40,602 INFO L87 Difference]: Start difference. First operand 380 states and 579 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:43,845 INFO L93 Difference]: Finished difference Result 876 states and 1345 transitions. [2021-08-29 03:33:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-08-29 03:33:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:43,849 INFO L225 Difference]: With dead ends: 876 [2021-08-29 03:33:43,850 INFO L226 Difference]: Without dead ends: 628 [2021-08-29 03:33:43,851 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.29ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:43,852 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 302 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2790.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.50ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3179.62ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:43,853 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 0 Invalid, 799 Unknown, 0 Unchecked, 4.50ms Time], IncrementalHoareTripleChecker [21 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 3179.62ms Time] [2021-08-29 03:33:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-08-29 03:33:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2021-08-29 03:33:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 1.52) internal successors, (950), 625 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 950 transitions. [2021-08-29 03:33:43,889 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 950 transitions. Word has length 59 [2021-08-29 03:33:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:43,890 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 950 transitions. [2021-08-29 03:33:43,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 950 transitions. [2021-08-29 03:33:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-29 03:33:43,895 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:43,895 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:33:43,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 03:33:44,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:33:44,105 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:44,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1680839393, now seen corresponding path program 1 times [2021-08-29 03:33:44,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:33:44,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951594077] [2021-08-29 03:33:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:44,107 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:33:44,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:33:44,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:33:44,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 03:33:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:44,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:33:44,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:33:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:44,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:33:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:33:44,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:33:44,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951594077] [2021-08-29 03:33:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951594077] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:44,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:44,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:33:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716530325] [2021-08-29 03:33:44,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:33:44,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:33:44,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:33:44,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:44,687 INFO L87 Difference]: Start difference. First operand 626 states and 950 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:47,531 INFO L93 Difference]: Finished difference Result 1366 states and 2085 transitions. [2021-08-29 03:33:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:33:47,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-08-29 03:33:47,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:47,535 INFO L225 Difference]: With dead ends: 1366 [2021-08-29 03:33:47,536 INFO L226 Difference]: Without dead ends: 872 [2021-08-29 03:33:47,537 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.00ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:33:47,538 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 319 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2426.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2774.83ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:47,538 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 0 Invalid, 798 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [16 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 2774.83ms Time] [2021-08-29 03:33:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-08-29 03:33:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-08-29 03:33:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.5154994259471872) internal successors, (1320), 871 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:47,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1320 transitions. [2021-08-29 03:33:47,565 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1320 transitions. Word has length 103 [2021-08-29 03:33:47,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:47,566 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1320 transitions. [2021-08-29 03:33:47,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:47,566 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1320 transitions. [2021-08-29 03:33:47,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-08-29 03:33:47,570 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:47,570 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:47,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-29 03:33:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:33:47,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:47,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1159018067, now seen corresponding path program 1 times [2021-08-29 03:33:47,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:33:47,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722084385] [2021-08-29 03:33:47,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:47,783 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:33:47,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:33:47,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:33:47,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 03:33:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:33:48,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-29 03:33:48,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:33:48,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-29 03:33:48,229 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-08-29 03:33:48,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-08-29 03:33:48,453 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-08-29 03:33:48,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-08-29 03:33:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-08-29 03:33:48,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:33:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-08-29 03:33:48,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:33:48,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722084385] [2021-08-29 03:33:48,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722084385] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:33:48,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:33:48,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-08-29 03:33:48,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533735119] [2021-08-29 03:33:48,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 03:33:48,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:33:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 03:33:48,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:33:48,875 INFO L87 Difference]: Start difference. First operand 872 states and 1320 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:33:55,404 INFO L93 Difference]: Finished difference Result 3288 states and 4998 transitions. [2021-08-29 03:33:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 03:33:55,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-08-29 03:33:55,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:33:55,417 INFO L225 Difference]: With dead ends: 3288 [2021-08-29 03:33:55,417 INFO L226 Difference]: Without dead ends: 2424 [2021-08-29 03:33:55,422 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 65.44ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 03:33:55,425 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 268 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5824.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.22ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6388.26ms IncrementalHoareTripleChecker+Time [2021-08-29 03:33:55,426 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 0 Invalid, 1426 Unknown, 0 Unchecked, 9.22ms Time], IncrementalHoareTripleChecker [76 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 6388.26ms Time] [2021-08-29 03:33:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-08-29 03:33:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1046. [2021-08-29 03:33:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.5502392344497609) internal successors, (1620), 1045 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1620 transitions. [2021-08-29 03:33:55,476 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1620 transitions. Word has length 127 [2021-08-29 03:33:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:33:55,477 INFO L470 AbstractCegarLoop]: Abstraction has 1046 states and 1620 transitions. [2021-08-29 03:33:55,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:33:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1620 transitions. [2021-08-29 03:33:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-08-29 03:33:55,484 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:33:55,485 INFO L513 BasicCegarLoop]: 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] [2021-08-29 03:33:55,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 03:33:55,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:33:55,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:33:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:33:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2021-08-29 03:33:55,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:33:55,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982343484] [2021-08-29 03:33:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:33:55,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:33:55,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:33:55,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:33:55,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-29 03:33:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:33:56,064 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 03:33:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:33:56,711 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 03:33:56,711 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 03:33:56,712 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:33:56,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-29 03:33:56,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:33:56,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:33:57,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:33:57 BoogieIcfgContainer [2021-08-29 03:33:57,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:33:57,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:33:57,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:33:57,061 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:33:57,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:33:36" (3/4) ... [2021-08-29 03:33:57,063 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 03:33:57,155 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:33:57,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:33:57,156 INFO L158 Benchmark]: Toolchain (without parser) took 22569.48ms. Allocated memory was 54.5MB in the beginning and 98.6MB in the end (delta: 44.0MB). Free memory was 29.3MB in the beginning and 33.3MB in the end (delta: -3.9MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,156 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:33:57,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 620.08ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 44.5MB in the end (delta: -15.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.45ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 40.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,157 INFO L158 Benchmark]: Boogie Preprocessor took 103.23ms. Allocated memory is still 67.1MB. Free memory was 40.1MB in the beginning and 33.0MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,157 INFO L158 Benchmark]: RCFGBuilder took 620.22ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 33.0MB in the beginning and 46.7MB in the end (delta: -13.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,158 INFO L158 Benchmark]: TraceAbstraction took 21029.47ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 47.1MB in the end (delta: -833.8kB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,158 INFO L158 Benchmark]: Witness Printer took 95.00ms. Allocated memory is still 98.6MB. Free memory was 47.1MB in the beginning and 33.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 03:33:57,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 36.8MB in the beginning and 36.8MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 620.08ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 44.5MB in the end (delta: -15.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.45ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 40.1MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.23ms. Allocated memory is still 67.1MB. Free memory was 40.1MB in the beginning and 33.0MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 620.22ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 33.0MB in the beginning and 46.7MB in the end (delta: -13.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 21029.47ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 47.1MB in the end (delta: -833.8kB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Witness Printer took 95.00ms. Allocated memory is still 98.6MB. Free memory was 47.1MB in the beginning and 33.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1728]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1728] reach_error() VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20835.59ms, OverallIterations: 5, TraceHistogramMax: 5, EmptinessCheckTime: 36.64ms, AutomataDifference: 15694.33ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 20.15ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1492 SdHoareTripleChecker+Valid, 15204.02ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1492 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 13501.55ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1653 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3612 IncrementalHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 0 mSDtfsCounter, 3612 mSolverCounterSat, 28.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 628 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 89.54ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1046occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 165.25ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1382 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 225.01ms SsaConstructionTime, 679.82ms SatisfiabilityAnalysisTime, 1967.79ms InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 1648 SizeOfPredicates, 3 NumberOfNonLiveVariables, 909 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 506/506 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 03:33:57,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...