./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.04.i.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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.04.i.cil.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 3ff34e80d9f0f73b7bbd7bbe2f389b5cf58f461c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_1.3.100.v20150511-1540.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.04.i.cil.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 3ff34e80d9f0f73b7bbd7bbe2f389b5cf58f461c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-19 22:27:06,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:27:06,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:27:06,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:27:06,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:27:06,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:27:06,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:27:06,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:27:06,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:27:06,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:27:06,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:27:06,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:27:06,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:27:06,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:27:06,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:27:06,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:27:06,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:27:06,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:27:06,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:27:06,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:27:06,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:27:06,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:27:06,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:27:06,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:27:06,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:27:06,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:27:06,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:27:06,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:27:06,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:27:06,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:27:06,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:06,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:06,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:06,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:06,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:06,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:06,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:06,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:06,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:06,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:06,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:06,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:27:06,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:06,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:06,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:06,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:06,396 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:06,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:06,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:06,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:27:06,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:06,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:06,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:06,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:06,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:06,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:06,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:06,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:06,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:06,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:06,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:06,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:06,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:06,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:06,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:06,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:06,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:06,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:27:06,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:27:06,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:06,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:06,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 3ff34e80d9f0f73b7bbd7bbe2f389b5cf58f461c [2020-10-19 22:27:06,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:06,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:06,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:06,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:06,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:06,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:06,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422824e79/cabd81af349b4cf8b4160c06bf0b1751/FLAGadb052c7a [2020-10-19 22:27:07,263 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:27:07,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:07,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422824e79/cabd81af349b4cf8b4160c06bf0b1751/FLAGadb052c7a [2020-10-19 22:27:07,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422824e79/cabd81af349b4cf8b4160c06bf0b1751 [2020-10-19 22:27:07,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:27:07,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:27:07,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:07,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:27:07,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:27:07,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:07" (1/1) ... [2020-10-19 22:27:07,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4303dd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:07, skipping insertion in model container [2020-10-19 22:27:07,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:07" (1/1) ... [2020-10-19 22:27:07,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:27:07,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:08,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:08,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:08,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:08,292 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:08,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08 WrapperNode [2020-10-19 22:27:08,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:08,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:08,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:08,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:08,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:08,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:08,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:08,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:08,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... [2020-10-19 22:27:08,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:08,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:08,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:08,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:08,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:08,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:08,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:27:08,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:27:08,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:08,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:27:08,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:08,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:08,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:08,857 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:09,717 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:09,717 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:09,728 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:09,728 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:09,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:09 BoogieIcfgContainer [2020-10-19 22:27:09,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:09,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:09,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:09,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:09,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:27:07" (1/3) ... [2020-10-19 22:27:09,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbb811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:09, skipping insertion in model container [2020-10-19 22:27:09,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:08" (2/3) ... [2020-10-19 22:27:09,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbb811c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:09, skipping insertion in model container [2020-10-19 22:27:09,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:09" (3/3) ... [2020-10-19 22:27:09,739 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:09,750 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:09,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:09,770 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:09,792 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:09,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:09,793 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:09,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:09,793 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:09,793 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:09,793 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:09,794 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:27:09,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:09,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,845 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:09,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-10-19 22:27:09,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623858354] [2020-10-19 22:27:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:10,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623858354] [2020-10-19 22:27:10,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248024535] [2020-10-19 22:27:10,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,261 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:27:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,922 INFO L93 Difference]: Finished difference Result 314 states and 528 transitions. [2020-10-19 22:27:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,940 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:27:10,940 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:27:10,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:27:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:27:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2020-10-19 22:27:10,999 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 45 [2020-10-19 22:27:10,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,000 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2020-10-19 22:27:11,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2020-10-19 22:27:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:27:11,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,003 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:27:11,004 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,004 INFO L82 PathProgramCache]: Analyzing trace with hash 968097209, now seen corresponding path program 1 times [2020-10-19 22:27:11,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664584664] [2020-10-19 22:27:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:11,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664584664] [2020-10-19 22:27:11,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:11,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101588770] [2020-10-19 22:27:11,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:11,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:11,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:11,123 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand 4 states. [2020-10-19 22:27:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,509 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2020-10-19 22:27:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-19 22:27:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,512 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:27:11,512 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:27:11,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:27:11,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:27:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2020-10-19 22:27:11,526 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 58 [2020-10-19 22:27:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,526 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2020-10-19 22:27:11,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2020-10-19 22:27:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:11,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,530 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:27:11,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -461266997, now seen corresponding path program 1 times [2020-10-19 22:27:11,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871936106] [2020-10-19 22:27:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:11,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871936106] [2020-10-19 22:27:11,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:11,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337035265] [2020-10-19 22:27:11,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:11,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:11,613 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand 4 states. [2020-10-19 22:27:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,976 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-10-19 22:27:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,978 INFO L225 Difference]: With dead ends: 279 [2020-10-19 22:27:11,979 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 22:27:11,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 22:27:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2020-10-19 22:27:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2020-10-19 22:27:11,990 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 59 [2020-10-19 22:27:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,990 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2020-10-19 22:27:11,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2020-10-19 22:27:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:11,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,993 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:27:11,994 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,994 INFO L82 PathProgramCache]: Analyzing trace with hash 881926454, now seen corresponding path program 1 times [2020-10-19 22:27:11,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126975735] [2020-10-19 22:27:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:12,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126975735] [2020-10-19 22:27:12,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777003234] [2020-10-19 22:27:12,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,084 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand 4 states. [2020-10-19 22:27:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:12,426 INFO L93 Difference]: Finished difference Result 277 states and 418 transitions. [2020-10-19 22:27:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:12,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:12,432 INFO L225 Difference]: With dead ends: 277 [2020-10-19 22:27:12,432 INFO L226 Difference]: Without dead ends: 155 [2020-10-19 22:27:12,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-19 22:27:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-10-19 22:27:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 213 transitions. [2020-10-19 22:27:12,447 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 213 transitions. Word has length 59 [2020-10-19 22:27:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:12,448 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 213 transitions. [2020-10-19 22:27:12,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 213 transitions. [2020-10-19 22:27:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:12,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:12,450 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:12,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:27:12,451 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:12,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1831274614, now seen corresponding path program 1 times [2020-10-19 22:27:12,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:12,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974458434] [2020-10-19 22:27:12,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:12,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974458434] [2020-10-19 22:27:12,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217244107] [2020-10-19 22:27:12,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,522 INFO L87 Difference]: Start difference. First operand 141 states and 213 transitions. Second operand 4 states. [2020-10-19 22:27:12,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:12,858 INFO L93 Difference]: Finished difference Result 276 states and 416 transitions. [2020-10-19 22:27:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:12,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:12,860 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:12,860 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:12,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2020-10-19 22:27:12,870 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 59 [2020-10-19 22:27:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:12,870 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2020-10-19 22:27:12,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2020-10-19 22:27:12,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:12,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:12,872 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:12,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:27:12,873 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:12,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:12,873 INFO L82 PathProgramCache]: Analyzing trace with hash 376743775, now seen corresponding path program 1 times [2020-10-19 22:27:12,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:12,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180523636] [2020-10-19 22:27:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:12,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180523636] [2020-10-19 22:27:12,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85610706] [2020-10-19 22:27:12,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,938 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand 4 states. [2020-10-19 22:27:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:13,271 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-10-19 22:27:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:13,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:13,273 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:13,273 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:13,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:13,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions. [2020-10-19 22:27:13,280 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 59 [2020-10-19 22:27:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:13,280 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 211 transitions. [2020-10-19 22:27:13,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions. [2020-10-19 22:27:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 22:27:13,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:13,282 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:13,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:27:13,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1718254146, now seen corresponding path program 1 times [2020-10-19 22:27:13,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:13,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047107327] [2020-10-19 22:27:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:13,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047107327] [2020-10-19 22:27:13,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:13,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:13,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211589134] [2020-10-19 22:27:13,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:13,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:13,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:13,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:13,395 INFO L87 Difference]: Start difference. First operand 141 states and 211 transitions. Second operand 4 states. [2020-10-19 22:27:13,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:13,704 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2020-10-19 22:27:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:13,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-19 22:27:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:13,708 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:13,708 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:13,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:13,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:13,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2020-10-19 22:27:13,714 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 60 [2020-10-19 22:27:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:13,715 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2020-10-19 22:27:13,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2020-10-19 22:27:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:27:13,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:13,716 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:13,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:27:13,716 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 316605892, now seen corresponding path program 1 times [2020-10-19 22:27:13,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:13,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109019241] [2020-10-19 22:27:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:13,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109019241] [2020-10-19 22:27:13,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:13,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:13,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829588257] [2020-10-19 22:27:13,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:13,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:13,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:13,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:13,812 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand 4 states. [2020-10-19 22:27:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,160 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-10-19 22:27:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-19 22:27:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,162 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:14,162 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:14,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 209 transitions. [2020-10-19 22:27:14,168 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 209 transitions. Word has length 61 [2020-10-19 22:27:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,169 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 209 transitions. [2020-10-19 22:27:14,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 209 transitions. [2020-10-19 22:27:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:27:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,170 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:14,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:27:14,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,171 INFO L82 PathProgramCache]: Analyzing trace with hash -223613817, now seen corresponding path program 1 times [2020-10-19 22:27:14,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597299437] [2020-10-19 22:27:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:14,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597299437] [2020-10-19 22:27:14,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942454224] [2020-10-19 22:27:14,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,236 INFO L87 Difference]: Start difference. First operand 141 states and 209 transitions. Second operand 4 states. [2020-10-19 22:27:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,532 INFO L93 Difference]: Finished difference Result 266 states and 399 transitions. [2020-10-19 22:27:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:27:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,534 INFO L225 Difference]: With dead ends: 266 [2020-10-19 22:27:14,534 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 22:27:14,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 22:27:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-19 22:27:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-10-19 22:27:14,540 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 62 [2020-10-19 22:27:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,540 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-10-19 22:27:14,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-10-19 22:27:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:27:14,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,542 INFO L422 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, 1, 1, 1] [2020-10-19 22:27:14,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:27:14,543 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,543 INFO L82 PathProgramCache]: Analyzing trace with hash 176537583, now seen corresponding path program 1 times [2020-10-19 22:27:14,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526376740] [2020-10-19 22:27:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:14,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526376740] [2020-10-19 22:27:14,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615728539] [2020-10-19 22:27:14,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,611 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-10-19 22:27:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,958 INFO L93 Difference]: Finished difference Result 306 states and 460 transitions. [2020-10-19 22:27:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:27:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,960 INFO L225 Difference]: With dead ends: 306 [2020-10-19 22:27:14,960 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:27:14,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:27:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-10-19 22:27:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 246 transitions. [2020-10-19 22:27:14,967 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 246 transitions. Word has length 62 [2020-10-19 22:27:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,968 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 246 transitions. [2020-10-19 22:27:14,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 246 transitions. [2020-10-19 22:27:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:27:14,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,969 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:14,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:27:14,970 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash 551995766, now seen corresponding path program 1 times [2020-10-19 22:27:14,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546163011] [2020-10-19 22:27:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:15,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546163011] [2020-10-19 22:27:15,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:15,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742176951] [2020-10-19 22:27:15,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:15,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:15,061 INFO L87 Difference]: Start difference. First operand 163 states and 246 transitions. Second operand 4 states. [2020-10-19 22:27:15,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,375 INFO L93 Difference]: Finished difference Result 328 states and 497 transitions. [2020-10-19 22:27:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:15,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-19 22:27:15,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,378 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:27:15,378 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:27:15,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:27:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-10-19 22:27:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-10-19 22:27:15,384 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 75 [2020-10-19 22:27:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,385 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-10-19 22:27:15,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-10-19 22:27:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:15,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,386 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:27:15,387 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -475509842, now seen corresponding path program 1 times [2020-10-19 22:27:15,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239141332] [2020-10-19 22:27:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:15,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239141332] [2020-10-19 22:27:15,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:15,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845642309] [2020-10-19 22:27:15,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:15,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:15,449 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 4 states. [2020-10-19 22:27:15,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,754 INFO L93 Difference]: Finished difference Result 327 states and 494 transitions. [2020-10-19 22:27:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:15,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,756 INFO L225 Difference]: With dead ends: 327 [2020-10-19 22:27:15,756 INFO L226 Difference]: Without dead ends: 183 [2020-10-19 22:27:15,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-19 22:27:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 163. [2020-10-19 22:27:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:15,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-10-19 22:27:15,762 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 76 [2020-10-19 22:27:15,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,762 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-10-19 22:27:15,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-10-19 22:27:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:15,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,763 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:27:15,763 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash 867683609, now seen corresponding path program 1 times [2020-10-19 22:27:15,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614557023] [2020-10-19 22:27:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:15,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614557023] [2020-10-19 22:27:15,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:15,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773729326] [2020-10-19 22:27:15,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:15,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:15,865 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 4 states. [2020-10-19 22:27:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:16,234 INFO L93 Difference]: Finished difference Result 325 states and 490 transitions. [2020-10-19 22:27:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:16,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:16,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:16,236 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:16,236 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:16,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-10-19 22:27:16,253 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 76 [2020-10-19 22:27:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:16,256 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-10-19 22:27:16,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-10-19 22:27:16,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:16,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:16,258 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:16,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:27:16,259 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:16,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1817031769, now seen corresponding path program 1 times [2020-10-19 22:27:16,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:16,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451834377] [2020-10-19 22:27:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:16,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451834377] [2020-10-19 22:27:16,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:16,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:16,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599595579] [2020-10-19 22:27:16,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:16,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:16,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:16,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:16,360 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 4 states. [2020-10-19 22:27:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:16,748 INFO L93 Difference]: Finished difference Result 324 states and 487 transitions. [2020-10-19 22:27:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:16,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:16,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:16,750 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:16,750 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:16,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-10-19 22:27:16,759 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 76 [2020-10-19 22:27:16,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:16,759 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-10-19 22:27:16,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:16,760 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-10-19 22:27:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:16,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:16,761 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:16,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:27:16,762 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:16,762 INFO L82 PathProgramCache]: Analyzing trace with hash 362500930, now seen corresponding path program 1 times [2020-10-19 22:27:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:16,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607811810] [2020-10-19 22:27:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:16,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607811810] [2020-10-19 22:27:16,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:16,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:16,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053515339] [2020-10-19 22:27:16,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:16,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:16,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:16,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:16,815 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 4 states. [2020-10-19 22:27:17,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:17,149 INFO L93 Difference]: Finished difference Result 324 states and 485 transitions. [2020-10-19 22:27:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:17,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:17,152 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:17,153 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:17,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:17,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2020-10-19 22:27:17,167 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 76 [2020-10-19 22:27:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:17,168 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2020-10-19 22:27:17,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2020-10-19 22:27:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 22:27:17,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:17,170 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:17,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:27:17,171 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1276725951, now seen corresponding path program 1 times [2020-10-19 22:27:17,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:17,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312219834] [2020-10-19 22:27:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:17,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312219834] [2020-10-19 22:27:17,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:17,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:17,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330181553] [2020-10-19 22:27:17,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:17,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:17,267 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand 4 states. [2020-10-19 22:27:17,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:17,581 INFO L93 Difference]: Finished difference Result 324 states and 483 transitions. [2020-10-19 22:27:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:17,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-19 22:27:17,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:17,583 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:17,584 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:17,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:17,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:17,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:17,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2020-10-19 22:27:17,592 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 77 [2020-10-19 22:27:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:17,592 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2020-10-19 22:27:17,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2020-10-19 22:27:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 22:27:17,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:17,594 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:17,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:27:17,595 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:17,595 INFO L82 PathProgramCache]: Analyzing trace with hash -485866265, now seen corresponding path program 1 times [2020-10-19 22:27:17,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:17,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213090372] [2020-10-19 22:27:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:17,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213090372] [2020-10-19 22:27:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104451833] [2020-10-19 22:27:17,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:17,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:17,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:17,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:17,662 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand 4 states. [2020-10-19 22:27:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:18,066 INFO L93 Difference]: Finished difference Result 324 states and 481 transitions. [2020-10-19 22:27:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:18,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-19 22:27:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:18,071 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:18,071 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:18,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2020-10-19 22:27:18,082 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 78 [2020-10-19 22:27:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:18,083 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2020-10-19 22:27:18,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2020-10-19 22:27:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-19 22:27:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:18,085 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:18,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:27:18,086 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:18,086 INFO L82 PathProgramCache]: Analyzing trace with hash 669553092, now seen corresponding path program 1 times [2020-10-19 22:27:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:18,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877656288] [2020-10-19 22:27:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:18,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877656288] [2020-10-19 22:27:18,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:18,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:18,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562679755] [2020-10-19 22:27:18,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:18,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:18,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:18,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:18,191 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand 4 states. [2020-10-19 22:27:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:18,549 INFO L93 Difference]: Finished difference Result 314 states and 466 transitions. [2020-10-19 22:27:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:18,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-19 22:27:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:18,551 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:27:18,551 INFO L226 Difference]: Without dead ends: 170 [2020-10-19 22:27:18,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:18,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-19 22:27:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2020-10-19 22:27:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2020-10-19 22:27:18,558 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 79 [2020-10-19 22:27:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:18,558 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2020-10-19 22:27:18,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2020-10-19 22:27:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:18,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:18,560 INFO L422 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, 1, 1] [2020-10-19 22:27:18,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:27:18,560 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:18,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:18,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1124223160, now seen corresponding path program 1 times [2020-10-19 22:27:18,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:18,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841673223] [2020-10-19 22:27:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:18,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841673223] [2020-10-19 22:27:18,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:18,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:18,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026331777] [2020-10-19 22:27:18,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:18,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:18,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:18,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:18,679 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 4 states. [2020-10-19 22:27:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:19,189 INFO L93 Difference]: Finished difference Result 402 states and 601 transitions. [2020-10-19 22:27:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:19,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:19,192 INFO L225 Difference]: With dead ends: 402 [2020-10-19 22:27:19,192 INFO L226 Difference]: Without dead ends: 258 [2020-10-19 22:27:19,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-19 22:27:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 206. [2020-10-19 22:27:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-19 22:27:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 316 transitions. [2020-10-19 22:27:19,202 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 316 transitions. Word has length 84 [2020-10-19 22:27:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:19,202 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 316 transitions. [2020-10-19 22:27:19,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 316 transitions. [2020-10-19 22:27:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:19,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:19,204 INFO L422 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, 1, 1] [2020-10-19 22:27:19,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:27:19,204 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:19,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash -2021616438, now seen corresponding path program 1 times [2020-10-19 22:27:19,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:19,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947874977] [2020-10-19 22:27:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:19,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947874977] [2020-10-19 22:27:19,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:19,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:19,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891959720] [2020-10-19 22:27:19,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:19,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:19,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:19,273 INFO L87 Difference]: Start difference. First operand 206 states and 316 transitions. Second operand 4 states. [2020-10-19 22:27:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:19,659 INFO L93 Difference]: Finished difference Result 442 states and 685 transitions. [2020-10-19 22:27:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:19,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:19,662 INFO L225 Difference]: With dead ends: 442 [2020-10-19 22:27:19,662 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:27:19,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:19,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:27:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-10-19 22:27:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 358 transitions. [2020-10-19 22:27:19,672 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 358 transitions. Word has length 84 [2020-10-19 22:27:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:19,672 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 358 transitions. [2020-10-19 22:27:19,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 358 transitions. [2020-10-19 22:27:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:19,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:19,674 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:19,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:27:19,675 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -344765763, now seen corresponding path program 1 times [2020-10-19 22:27:19,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:19,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130239184] [2020-10-19 22:27:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:19,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130239184] [2020-10-19 22:27:19,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:19,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:19,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277122836] [2020-10-19 22:27:19,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:19,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:19,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:19,749 INFO L87 Difference]: Start difference. First operand 230 states and 358 transitions. Second operand 4 states. [2020-10-19 22:27:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:20,280 INFO L93 Difference]: Finished difference Result 493 states and 762 transitions. [2020-10-19 22:27:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:20,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:20,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:20,283 INFO L225 Difference]: With dead ends: 493 [2020-10-19 22:27:20,283 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 22:27:20,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 22:27:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 230. [2020-10-19 22:27:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 357 transitions. [2020-10-19 22:27:20,291 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 357 transitions. Word has length 97 [2020-10-19 22:27:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:20,292 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 357 transitions. [2020-10-19 22:27:20,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 357 transitions. [2020-10-19 22:27:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:20,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:20,294 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:20,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:27:20,294 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:20,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash -304091013, now seen corresponding path program 1 times [2020-10-19 22:27:20,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:20,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502868199] [2020-10-19 22:27:20,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:20,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502868199] [2020-10-19 22:27:20,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:20,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:20,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366596920] [2020-10-19 22:27:20,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:20,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:20,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:20,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:20,368 INFO L87 Difference]: Start difference. First operand 230 states and 357 transitions. Second operand 4 states. [2020-10-19 22:27:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:20,806 INFO L93 Difference]: Finished difference Result 466 states and 724 transitions. [2020-10-19 22:27:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:20,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:20,809 INFO L225 Difference]: With dead ends: 466 [2020-10-19 22:27:20,809 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:27:20,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:27:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-10-19 22:27:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2020-10-19 22:27:20,820 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 97 [2020-10-19 22:27:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:20,821 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2020-10-19 22:27:20,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2020-10-19 22:27:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:20,823 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:20,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:27:20,824 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1789653831, now seen corresponding path program 1 times [2020-10-19 22:27:20,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:20,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785354816] [2020-10-19 22:27:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:20,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785354816] [2020-10-19 22:27:20,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:20,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:20,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670653086] [2020-10-19 22:27:20,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:20,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:20,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:20,906 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand 4 states. [2020-10-19 22:27:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:21,359 INFO L93 Difference]: Finished difference Result 492 states and 757 transitions. [2020-10-19 22:27:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:21,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:21,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:21,365 INFO L225 Difference]: With dead ends: 492 [2020-10-19 22:27:21,365 INFO L226 Difference]: Without dead ends: 281 [2020-10-19 22:27:21,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-19 22:27:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 230. [2020-10-19 22:27:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2020-10-19 22:27:21,377 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 98 [2020-10-19 22:27:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:21,377 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2020-10-19 22:27:21,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2020-10-19 22:27:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:21,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:21,379 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:21,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:27:21,380 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1162120014, now seen corresponding path program 1 times [2020-10-19 22:27:21,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:21,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350673609] [2020-10-19 22:27:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:21,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350673609] [2020-10-19 22:27:21,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:21,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:21,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816286200] [2020-10-19 22:27:21,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:21,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:21,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,450 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand 4 states. [2020-10-19 22:27:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:21,888 INFO L93 Difference]: Finished difference Result 490 states and 753 transitions. [2020-10-19 22:27:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:21,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:21,890 INFO L225 Difference]: With dead ends: 490 [2020-10-19 22:27:21,891 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 22:27:21,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 22:27:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 230. [2020-10-19 22:27:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 354 transitions. [2020-10-19 22:27:21,898 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 354 transitions. Word has length 98 [2020-10-19 22:27:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:21,899 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 354 transitions. [2020-10-19 22:27:21,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 354 transitions. [2020-10-19 22:27:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:21,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:21,900 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:21,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:27:21,901 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:21,901 INFO L82 PathProgramCache]: Analyzing trace with hash -212771854, now seen corresponding path program 1 times [2020-10-19 22:27:21,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:21,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452600384] [2020-10-19 22:27:21,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:21,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452600384] [2020-10-19 22:27:21,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:21,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:21,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172174412] [2020-10-19 22:27:21,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:21,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:21,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,969 INFO L87 Difference]: Start difference. First operand 230 states and 354 transitions. Second operand 4 states. [2020-10-19 22:27:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:22,410 INFO L93 Difference]: Finished difference Result 489 states and 750 transitions. [2020-10-19 22:27:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:22,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:22,412 INFO L225 Difference]: With dead ends: 489 [2020-10-19 22:27:22,412 INFO L226 Difference]: Without dead ends: 278 [2020-10-19 22:27:22,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-19 22:27:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 230. [2020-10-19 22:27:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 353 transitions. [2020-10-19 22:27:22,422 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 353 transitions. Word has length 98 [2020-10-19 22:27:22,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:22,422 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 353 transitions. [2020-10-19 22:27:22,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:22,422 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 353 transitions. [2020-10-19 22:27:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:22,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:22,424 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:22,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:27:22,424 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1667302693, now seen corresponding path program 1 times [2020-10-19 22:27:22,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:22,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185598838] [2020-10-19 22:27:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-19 22:27:22,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185598838] [2020-10-19 22:27:22,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:22,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:27:22,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334843543] [2020-10-19 22:27:22,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:27:22,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:27:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:22,524 INFO L87 Difference]: Start difference. First operand 230 states and 353 transitions. Second operand 5 states. [2020-10-19 22:27:23,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,025 INFO L93 Difference]: Finished difference Result 462 states and 714 transitions. [2020-10-19 22:27:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:27:23,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-19 22:27:23,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,028 INFO L225 Difference]: With dead ends: 462 [2020-10-19 22:27:23,028 INFO L226 Difference]: Without dead ends: 251 [2020-10-19 22:27:23,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:27:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-19 22:27:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2020-10-19 22:27:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:23,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 379 transitions. [2020-10-19 22:27:23,037 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 379 transitions. Word has length 98 [2020-10-19 22:27:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,038 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 379 transitions. [2020-10-19 22:27:23,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:27:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 379 transitions. [2020-10-19 22:27:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:23,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,039 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:23,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:27:23,041 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash 98797236, now seen corresponding path program 1 times [2020-10-19 22:27:23,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:23,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779320966] [2020-10-19 22:27:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:23,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779320966] [2020-10-19 22:27:23,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:23,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536601302] [2020-10-19 22:27:23,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:23,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:23,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:23,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:23,139 INFO L87 Difference]: Start difference. First operand 250 states and 379 transitions. Second operand 4 states. [2020-10-19 22:27:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,522 INFO L93 Difference]: Finished difference Result 503 states and 764 transitions. [2020-10-19 22:27:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:23,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,524 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:23,524 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:23,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:23,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-19 22:27:23,532 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 98 [2020-10-19 22:27:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,532 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-19 22:27:23,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-19 22:27:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,534 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:23,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:27:23,534 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1048145396, now seen corresponding path program 1 times [2020-10-19 22:27:23,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:23,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216669715] [2020-10-19 22:27:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:23,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216669715] [2020-10-19 22:27:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:23,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853024403] [2020-10-19 22:27:23,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:23,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:23,598 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 4 states. [2020-10-19 22:27:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:24,014 INFO L93 Difference]: Finished difference Result 502 states and 761 transitions. [2020-10-19 22:27:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:24,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:24,016 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:24,016 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:24,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 377 transitions. [2020-10-19 22:27:24,026 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 377 transitions. Word has length 98 [2020-10-19 22:27:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:24,027 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 377 transitions. [2020-10-19 22:27:24,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 377 transitions. [2020-10-19 22:27:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:24,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:24,028 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:24,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:27:24,029 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash -645348551, now seen corresponding path program 1 times [2020-10-19 22:27:24,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:24,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130265701] [2020-10-19 22:27:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:24,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130265701] [2020-10-19 22:27:24,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:24,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:24,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265330620] [2020-10-19 22:27:24,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:24,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:24,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:24,094 INFO L87 Difference]: Start difference. First operand 250 states and 377 transitions. Second operand 4 states. [2020-10-19 22:27:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:24,585 INFO L93 Difference]: Finished difference Result 529 states and 795 transitions. [2020-10-19 22:27:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:24,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:24,589 INFO L225 Difference]: With dead ends: 529 [2020-10-19 22:27:24,589 INFO L226 Difference]: Without dead ends: 298 [2020-10-19 22:27:24,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-19 22:27:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2020-10-19 22:27:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 376 transitions. [2020-10-19 22:27:24,603 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 376 transitions. Word has length 99 [2020-10-19 22:27:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:24,603 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 376 transitions. [2020-10-19 22:27:24,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 376 transitions. [2020-10-19 22:27:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:24,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:24,606 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:24,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:27:24,606 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:24,607 INFO L82 PathProgramCache]: Analyzing trace with hash -211619465, now seen corresponding path program 1 times [2020-10-19 22:27:24,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:24,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712893141] [2020-10-19 22:27:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:24,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712893141] [2020-10-19 22:27:24,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:24,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:24,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564599902] [2020-10-19 22:27:24,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:24,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:24,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:24,685 INFO L87 Difference]: Start difference. First operand 250 states and 376 transitions. Second operand 4 states. [2020-10-19 22:27:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:25,014 INFO L93 Difference]: Finished difference Result 502 states and 757 transitions. [2020-10-19 22:27:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:25,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:25,016 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:25,017 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:25,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:25,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2020-10-19 22:27:25,024 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 99 [2020-10-19 22:27:25,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:25,025 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2020-10-19 22:27:25,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2020-10-19 22:27:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:25,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:25,026 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:25,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:27:25,027 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash -300903122, now seen corresponding path program 1 times [2020-10-19 22:27:25,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:25,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326768720] [2020-10-19 22:27:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:25,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326768720] [2020-10-19 22:27:25,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:25,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:25,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147435324] [2020-10-19 22:27:25,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:25,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:25,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:25,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:25,089 INFO L87 Difference]: Start difference. First operand 250 states and 375 transitions. Second operand 4 states. [2020-10-19 22:27:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:25,533 INFO L93 Difference]: Finished difference Result 529 states and 791 transitions. [2020-10-19 22:27:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:25,533 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:25,536 INFO L225 Difference]: With dead ends: 529 [2020-10-19 22:27:25,536 INFO L226 Difference]: Without dead ends: 298 [2020-10-19 22:27:25,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-19 22:27:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2020-10-19 22:27:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2020-10-19 22:27:25,543 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 100 [2020-10-19 22:27:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:25,544 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2020-10-19 22:27:25,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2020-10-19 22:27:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:25,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:25,546 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:25,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:27:25,548 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:25,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash 259796656, now seen corresponding path program 1 times [2020-10-19 22:27:25,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:25,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661357051] [2020-10-19 22:27:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:25,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661357051] [2020-10-19 22:27:25,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:25,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:25,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377383210] [2020-10-19 22:27:25,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:25,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:25,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:25,613 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand 4 states. [2020-10-19 22:27:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:25,975 INFO L93 Difference]: Finished difference Result 502 states and 753 transitions. [2020-10-19 22:27:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:25,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:25,977 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:25,978 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:25,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2020-10-19 22:27:25,991 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 100 [2020-10-19 22:27:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:25,991 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2020-10-19 22:27:25,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2020-10-19 22:27:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:25,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:25,993 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:25,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 22:27:25,993 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash 584269940, now seen corresponding path program 1 times [2020-10-19 22:27:25,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:25,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615919230] [2020-10-19 22:27:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:26,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615919230] [2020-10-19 22:27:26,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:26,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:26,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794058641] [2020-10-19 22:27:26,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:26,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:26,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:26,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:26,073 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand 4 states. [2020-10-19 22:27:26,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:26,494 INFO L93 Difference]: Finished difference Result 529 states and 787 transitions. [2020-10-19 22:27:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:26,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:26,496 INFO L225 Difference]: With dead ends: 529 [2020-10-19 22:27:26,497 INFO L226 Difference]: Without dead ends: 298 [2020-10-19 22:27:26,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-19 22:27:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2020-10-19 22:27:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 372 transitions. [2020-10-19 22:27:26,505 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 372 transitions. Word has length 101 [2020-10-19 22:27:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:26,505 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 372 transitions. [2020-10-19 22:27:26,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 372 transitions. [2020-10-19 22:27:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:26,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:26,507 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:26,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 22:27:26,507 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 786093874, now seen corresponding path program 1 times [2020-10-19 22:27:26,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:26,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798997202] [2020-10-19 22:27:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:26,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798997202] [2020-10-19 22:27:26,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:26,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:26,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141990065] [2020-10-19 22:27:26,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:26,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:26,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:26,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:26,575 INFO L87 Difference]: Start difference. First operand 250 states and 372 transitions. Second operand 4 states. [2020-10-19 22:27:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:26,943 INFO L93 Difference]: Finished difference Result 502 states and 749 transitions. [2020-10-19 22:27:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:26,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:26,946 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:26,946 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:26,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:26,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 371 transitions. [2020-10-19 22:27:26,954 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 371 transitions. Word has length 101 [2020-10-19 22:27:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:26,955 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 371 transitions. [2020-10-19 22:27:26,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 371 transitions. [2020-10-19 22:27:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:26,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:26,956 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:26,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 22:27:26,957 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1052130441, now seen corresponding path program 1 times [2020-10-19 22:27:26,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102894666] [2020-10-19 22:27:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:27,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102894666] [2020-10-19 22:27:27,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:27,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:27,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538512243] [2020-10-19 22:27:27,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:27,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:27,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:27,013 INFO L87 Difference]: Start difference. First operand 250 states and 371 transitions. Second operand 4 states. [2020-10-19 22:27:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:27,455 INFO L93 Difference]: Finished difference Result 519 states and 771 transitions. [2020-10-19 22:27:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:27,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:27,457 INFO L225 Difference]: With dead ends: 519 [2020-10-19 22:27:27,457 INFO L226 Difference]: Without dead ends: 288 [2020-10-19 22:27:27,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-19 22:27:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 250. [2020-10-19 22:27:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 370 transitions. [2020-10-19 22:27:27,465 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 370 transitions. Word has length 102 [2020-10-19 22:27:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:27,465 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 370 transitions. [2020-10-19 22:27:27,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 370 transitions. [2020-10-19 22:27:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:27,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:27,467 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:27,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 22:27:27,468 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:27,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1281262197, now seen corresponding path program 1 times [2020-10-19 22:27:27,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:27,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085242444] [2020-10-19 22:27:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:27,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085242444] [2020-10-19 22:27:27,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:27,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:27,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097095299] [2020-10-19 22:27:27,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:27,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:27,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:27,530 INFO L87 Difference]: Start difference. First operand 250 states and 370 transitions. Second operand 4 states. [2020-10-19 22:27:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:27,837 INFO L93 Difference]: Finished difference Result 492 states and 733 transitions. [2020-10-19 22:27:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:27,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:27,840 INFO L225 Difference]: With dead ends: 492 [2020-10-19 22:27:27,840 INFO L226 Difference]: Without dead ends: 261 [2020-10-19 22:27:27,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-19 22:27:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 250. [2020-10-19 22:27:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2020-10-19 22:27:27,852 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 102 [2020-10-19 22:27:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:27,852 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2020-10-19 22:27:27,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2020-10-19 22:27:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:27,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:27,853 INFO L422 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, 1] [2020-10-19 22:27:27,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 22:27:27,853 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash -251052971, now seen corresponding path program 1 times [2020-10-19 22:27:27,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:27,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040720312] [2020-10-19 22:27:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:27,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040720312] [2020-10-19 22:27:27,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:27,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:27,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599635619] [2020-10-19 22:27:27,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:27,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:27,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:27,943 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 4 states. [2020-10-19 22:27:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:28,368 INFO L93 Difference]: Finished difference Result 519 states and 767 transitions. [2020-10-19 22:27:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:28,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-19 22:27:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:28,371 INFO L225 Difference]: With dead ends: 519 [2020-10-19 22:27:28,371 INFO L226 Difference]: Without dead ends: 288 [2020-10-19 22:27:28,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:28,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-19 22:27:28,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 250. [2020-10-19 22:27:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:28,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2020-10-19 22:27:28,380 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 106 [2020-10-19 22:27:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:28,381 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2020-10-19 22:27:28,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2020-10-19 22:27:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:28,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:28,382 INFO L422 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, 1] [2020-10-19 22:27:28,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 22:27:28,383 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:28,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1937232809, now seen corresponding path program 1 times [2020-10-19 22:27:28,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:28,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480618067] [2020-10-19 22:27:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:28,467 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:27:28,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480618067] [2020-10-19 22:27:28,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:28,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:28,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664100356] [2020-10-19 22:27:28,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:28,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:28,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,471 INFO L87 Difference]: Start difference. First operand 250 states and 368 transitions. Second operand 3 states. [2020-10-19 22:27:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:28,533 INFO L93 Difference]: Finished difference Result 707 states and 1055 transitions. [2020-10-19 22:27:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:28,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:28,536 INFO L225 Difference]: With dead ends: 707 [2020-10-19 22:27:28,536 INFO L226 Difference]: Without dead ends: 476 [2020-10-19 22:27:28,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-19 22:27:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2020-10-19 22:27:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-19 22:27:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 705 transitions. [2020-10-19 22:27:28,551 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 705 transitions. Word has length 106 [2020-10-19 22:27:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:28,552 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 705 transitions. [2020-10-19 22:27:28,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 705 transitions. [2020-10-19 22:27:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:28,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:28,554 INFO L422 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, 1] [2020-10-19 22:27:28,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:27:28,554 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:28,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1141580761, now seen corresponding path program 1 times [2020-10-19 22:27:28,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:28,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512421677] [2020-10-19 22:27:28,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-19 22:27:28,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512421677] [2020-10-19 22:27:28,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:28,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:28,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707924172] [2020-10-19 22:27:28,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:28,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:28,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:28,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,596 INFO L87 Difference]: Start difference. First operand 476 states and 705 transitions. Second operand 3 states. [2020-10-19 22:27:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:28,642 INFO L93 Difference]: Finished difference Result 960 states and 1425 transitions. [2020-10-19 22:27:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:28,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:28,645 INFO L225 Difference]: With dead ends: 960 [2020-10-19 22:27:28,645 INFO L226 Difference]: Without dead ends: 503 [2020-10-19 22:27:28,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-10-19 22:27:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2020-10-19 22:27:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-19 22:27:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 740 transitions. [2020-10-19 22:27:28,659 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 740 transitions. Word has length 106 [2020-10-19 22:27:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:28,659 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 740 transitions. [2020-10-19 22:27:28,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 740 transitions. [2020-10-19 22:27:28,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:28,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:28,661 INFO L422 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, 1] [2020-10-19 22:27:28,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 22:27:28,662 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:28,662 INFO L82 PathProgramCache]: Analyzing trace with hash 555304539, now seen corresponding path program 1 times [2020-10-19 22:27:28,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:28,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091474777] [2020-10-19 22:27:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-19 22:27:28,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091474777] [2020-10-19 22:27:28,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:28,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:28,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59461521] [2020-10-19 22:27:28,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:28,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:28,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:28,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,711 INFO L87 Difference]: Start difference. First operand 503 states and 740 transitions. Second operand 3 states. [2020-10-19 22:27:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:28,731 INFO L93 Difference]: Finished difference Result 989 states and 1461 transitions. [2020-10-19 22:27:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:28,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:28,734 INFO L225 Difference]: With dead ends: 989 [2020-10-19 22:27:28,735 INFO L226 Difference]: Without dead ends: 505 [2020-10-19 22:27:28,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-19 22:27:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2020-10-19 22:27:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-10-19 22:27:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 742 transitions. [2020-10-19 22:27:28,749 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 742 transitions. Word has length 106 [2020-10-19 22:27:28,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:28,749 INFO L481 AbstractCegarLoop]: Abstraction has 505 states and 742 transitions. [2020-10-19 22:27:28,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 742 transitions. [2020-10-19 22:27:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:28,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:28,751 INFO L422 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, 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] [2020-10-19 22:27:28,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 22:27:28,751 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:28,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1707028326, now seen corresponding path program 1 times [2020-10-19 22:27:28,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:28,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051827340] [2020-10-19 22:27:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:28,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:28,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:29,057 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:27:29,057 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:29,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-19 22:27:29,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:29 BoogieIcfgContainer [2020-10-19 22:27:29,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:29,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:29,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:29,191 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:29,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:09" (3/4) ... [2020-10-19 22:27:29,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:27:29,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:29,199 INFO L168 Benchmark]: Toolchain (without parser) took 21714.84 ms. Allocated memory was 37.2 MB in the beginning and 140.0 MB in the end (delta: 102.8 MB). Free memory was 18.0 MB in the beginning and 36.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 84.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,199 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 35.1 MB. Free memory is still 11.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:29,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.94 ms. Allocated memory was 37.2 MB in the beginning and 48.2 MB in the end (delta: 11.0 MB). Free memory was 17.2 MB in the beginning and 22.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.89 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 17.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,205 INFO L168 Benchmark]: Boogie Preprocessor took 172.55 ms. Allocated memory was 48.2 MB in the beginning and 48.8 MB in the end (delta: 524.3 kB). Free memory was 17.3 MB in the beginning and 25.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,205 INFO L168 Benchmark]: RCFGBuilder took 1166.73 ms. Allocated memory was 48.8 MB in the beginning and 57.1 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 16.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,206 INFO L168 Benchmark]: TraceAbstraction took 19459.02 ms. Allocated memory was 57.1 MB in the beginning and 140.0 MB in the end (delta: 82.8 MB). Free memory was 16.5 MB in the beginning and 36.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 62.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:29,206 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 140.0 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:29,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 35.1 MB. Free memory is still 11.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 804.94 ms. Allocated memory was 37.2 MB in the beginning and 48.2 MB in the end (delta: 11.0 MB). Free memory was 17.2 MB in the beginning and 22.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 96.89 ms. Allocated memory is still 48.2 MB. Free memory was 21.9 MB in the beginning and 17.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 172.55 ms. Allocated memory was 48.2 MB in the beginning and 48.8 MB in the end (delta: 524.3 kB). Free memory was 17.3 MB in the beginning and 25.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1166.73 ms. Allocated memory was 48.8 MB in the beginning and 57.1 MB in the end (delta: 8.4 MB). Free memory was 25.3 MB in the beginning and 16.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 19459.02 ms. Allocated memory was 57.1 MB in the beginning and 140.0 MB in the end (delta: 82.8 MB). Free memory was 16.5 MB in the beginning and 36.8 MB in the end (delta: -20.3 MB). Peak memory consumption was 62.6 MB. Max. memory is 14.3 GB. * Witness Printer took 4.91 ms. Allocated memory is still 140.0 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1123. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={6:0}] [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)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [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={6:0}] [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={6:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [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={6:0}] [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={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [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={6:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1354] COND TRUE s->hit [L1355] s->state = 8656 VAL [init=1, SSLv3_server_data={6:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND TRUE s->state == 8656 [L1552] EXPR s->session [L1552] EXPR s->s3 [L1552] EXPR (s->s3)->tmp.new_cipher [L1552] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1553] COND FALSE !(! tmp___9) [L1559] ret = __VERIFIER_nondet_int() [L1560] COND TRUE blastFlag == 2 [L1561] blastFlag = 4 VAL [init=1, SSLv3_server_data={6:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.04.i.cil.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.2s, OverallIterations: 41, TraceHistogramMax: 4, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7516 SDtfs, 2089 SDslu, 10975 SDs, 0 SdLazy, 6884 SolverSat, 339 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=505occurred in iteration=40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 40 MinimizatonAttempts, 914 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 3500 NumberOfCodeBlocks, 3500 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3335 ConstructedInterpolants, 0 QuantifiedInterpolants, 763149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 PerfectInterpolantSequences, 1736/1736 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:27:31,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:27:31,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:27:31,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:27:31,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:27:31,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:27:31,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:27:31,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:27:31,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:27:31,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:27:31,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:27:31,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:27:31,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:27:31,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:27:31,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:27:31,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:27:31,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:27:31,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:27:31,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:27:31,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:27:31,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:27:31,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:27:31,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:27:31,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:27:31,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:27:31,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:27:31,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:27:31,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:27:31,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:27:31,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:27:31,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:31,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:31,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:31,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:31,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:31,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:31,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:31,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:31,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:31,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:31,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:31,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:27:31,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:31,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:31,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:31,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:31,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:31,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:31,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:31,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:31,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:31,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:31,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:31,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:31,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:27:31,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:27:31,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:31,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:31,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:31,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:31,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:31,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:31,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:31,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:31,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:31,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:31,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:31,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:31,402 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:27:31,402 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:27:31,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:31,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:31,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:27:31,403 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 3ff34e80d9f0f73b7bbd7bbe2f389b5cf58f461c [2020-10-19 22:27:31,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:31,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:31,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:31,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:31,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:31,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:31,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cec2b6e/960e15ab2a174b2f859acf13594b3a17/FLAG03adc8d04 [2020-10-19 22:27:32,308 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:27:32,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:32,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cec2b6e/960e15ab2a174b2f859acf13594b3a17/FLAG03adc8d04 [2020-10-19 22:27:32,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9cec2b6e/960e15ab2a174b2f859acf13594b3a17 [2020-10-19 22:27:32,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:27:32,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:27:32,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:32,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:27:32,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:27:32,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:32" (1/1) ... [2020-10-19 22:27:32,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68245e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:32, skipping insertion in model container [2020-10-19 22:27:32,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:32" (1/1) ... [2020-10-19 22:27:32,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:27:32,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:33,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:33,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:33,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:33,495 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:33,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33 WrapperNode [2020-10-19 22:27:33,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:33,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:33,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:33,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:33,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:33,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:33,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:33,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:33,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... [2020-10-19 22:27:33,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:33,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:33,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:33,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:33,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:33,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:27:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:33,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 22:27:33,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:33,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:33,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:33,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 22:27:34,102 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:36,408 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:36,408 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:36,418 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:36,418 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:36,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:36 BoogieIcfgContainer [2020-10-19 22:27:36,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:36,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:36,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:36,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:36,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:27:32" (1/3) ... [2020-10-19 22:27:36,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:36, skipping insertion in model container [2020-10-19 22:27:36,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:33" (2/3) ... [2020-10-19 22:27:36,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1407be15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:36, skipping insertion in model container [2020-10-19 22:27:36,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:36" (3/3) ... [2020-10-19 22:27:36,430 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.04.i.cil.c [2020-10-19 22:27:36,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:36,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:36,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:36,495 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:36,495 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:36,495 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:36,495 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:36,496 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:36,496 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:36,496 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:36,496 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:36,511 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:27:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:36,521 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:36,522 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-10-19 22:27:36,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:36,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213678346] [2020-10-19 22:27:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:36,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:36,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:36,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:36,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213678346] [2020-10-19 22:27:36,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:36,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:36,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465164254] [2020-10-19 22:27:36,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:36,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:36,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:36,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:36,888 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:27:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:37,037 INFO L93 Difference]: Finished difference Result 541 states and 918 transitions. [2020-10-19 22:27:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:37,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:37,056 INFO L225 Difference]: With dead ends: 541 [2020-10-19 22:27:37,056 INFO L226 Difference]: Without dead ends: 366 [2020-10-19 22:27:37,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-19 22:27:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2020-10-19 22:27:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-19 22:27:37,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 556 transitions. [2020-10-19 22:27:37,134 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 556 transitions. Word has length 45 [2020-10-19 22:27:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:37,135 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 556 transitions. [2020-10-19 22:27:37,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 556 transitions. [2020-10-19 22:27:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:27:37,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:37,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-19 22:27:37,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:27:37,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash 577204179, now seen corresponding path program 1 times [2020-10-19 22:27:37,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:37,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135165730] [2020-10-19 22:27:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:37,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:37,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:37,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:37,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135165730] [2020-10-19 22:27:37,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:37,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:37,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987012824] [2020-10-19 22:27:37,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:37,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:37,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:37,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:37,749 INFO L87 Difference]: Start difference. First operand 366 states and 556 transitions. Second operand 4 states. [2020-10-19 22:27:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:38,155 INFO L93 Difference]: Finished difference Result 839 states and 1282 transitions. [2020-10-19 22:27:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:38,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:27:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:38,160 INFO L225 Difference]: With dead ends: 839 [2020-10-19 22:27:38,161 INFO L226 Difference]: Without dead ends: 600 [2020-10-19 22:27:38,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-10-19 22:27:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2020-10-19 22:27:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-10-19 22:27:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 910 transitions. [2020-10-19 22:27:38,387 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 910 transitions. Word has length 103 [2020-10-19 22:27:38,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:38,388 INFO L481 AbstractCegarLoop]: Abstraction has 600 states and 910 transitions. [2020-10-19 22:27:38,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 910 transitions. [2020-10-19 22:27:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:38,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:38,394 INFO L422 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, 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] [2020-10-19 22:27:38,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:27:38,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:38,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:38,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1707028326, now seen corresponding path program 1 times [2020-10-19 22:27:38,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:38,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967394993] [2020-10-19 22:27:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:39,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:39,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:39,661 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:27:39,661 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:39,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:27:40,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:40 BoogieIcfgContainer [2020-10-19 22:27:40,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:40,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:40,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:40,019 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:40,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:36" (3/4) ... [2020-10-19 22:27:40,022 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:27:40,160 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:27:40,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:40,163 INFO L168 Benchmark]: Toolchain (without parser) took 7594.70 ms. Allocated memory was 35.1 MB in the beginning and 87.0 MB in the end (delta: 51.9 MB). Free memory was 9.7 MB in the beginning and 48.4 MB in the end (delta: -38.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,163 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 54.7 kB). Peak memory consumption was 54.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 922.81 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.8 MB in the beginning and 15.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.97 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 24.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,165 INFO L168 Benchmark]: Boogie Preprocessor took 100.84 ms. Allocated memory is still 46.7 MB. Free memory was 24.5 MB in the beginning and 17.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,165 INFO L168 Benchmark]: RCFGBuilder took 2668.98 ms. Allocated memory was 46.7 MB in the beginning and 55.6 MB in the end (delta: 8.9 MB). Free memory was 17.1 MB in the beginning and 20.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,166 INFO L168 Benchmark]: TraceAbstraction took 3596.45 ms. Allocated memory was 55.6 MB in the beginning and 86.5 MB in the end (delta: 30.9 MB). Free memory was 19.7 MB in the beginning and 32.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,166 INFO L168 Benchmark]: Witness Printer took 142.11 ms. Allocated memory was 86.5 MB in the beginning and 87.0 MB in the end (delta: 524.3 kB). Free memory was 32.6 MB in the beginning and 48.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:40,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 33.6 MB. Free memory was 18.7 MB in the beginning and 18.7 MB in the end (delta: 54.7 kB). Peak memory consumption was 54.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 922.81 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.8 MB in the beginning and 15.2 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 152.97 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 15.2 MB in the beginning and 24.5 MB in the end (delta: -9.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 100.84 ms. Allocated memory is still 46.7 MB. Free memory was 24.5 MB in the beginning and 17.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 2668.98 ms. Allocated memory was 46.7 MB in the beginning and 55.6 MB in the end (delta: 8.9 MB). Free memory was 17.1 MB in the beginning and 20.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3596.45 ms. Allocated memory was 55.6 MB in the beginning and 86.5 MB in the end (delta: 30.9 MB). Free memory was 19.7 MB in the beginning and 32.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 14.3 GB. * Witness Printer took 142.11 ms. Allocated memory was 86.5 MB in the beginning and 87.0 MB in the end (delta: 524.3 kB). Free memory was 32.6 MB in the beginning and 48.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [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}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 TRUE s->hit [L1355] s->state = 8656 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND TRUE s->state == 8656 [L1552] EXPR s->session [L1552] EXPR s->s3 [L1552] EXPR (s->s3)->tmp.new_cipher [L1552] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1553] COND FALSE !(! tmp___9) [L1559] ret = __VERIFIER_nondet_int() [L1560] COND TRUE blastFlag == 2 [L1561] blastFlag = 4 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 4 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.04.i.cil.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 587 SDtfs, 845 SDslu, 786 SDs, 0 SdLazy, 48 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=600occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 74336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 116/116 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! Received shutdown request...