./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.03.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.03.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 fa6118479ea6bc4aae2360064ac2f184cd09048a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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.03.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 fa6118479ea6bc4aae2360064ac2f184cd09048a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:26:58,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:26:58,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:26:58,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:26:58,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:26:58,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:26:58,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:26:58,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:26:58,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:26:58,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:26:58,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:26:58,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:26:58,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:26:58,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:26:58,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:26:58,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:26:58,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:26:58,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:26:58,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:26:58,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:26:58,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:26:58,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:26:58,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:26:58,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:26:58,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:26:58,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:26:58,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:26:58,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:26:58,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:26:58,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:26:58,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:26:58,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:26:58,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:26:58,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:26:58,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:26:58,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:26:58,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:26:58,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:26:58,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:26:58,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:26:58,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:26:58,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:26:58,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:26:58,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:26:58,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:26:58,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:26:58,556 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:26:58,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:26:58,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:26:58,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:26:58,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:26:58,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:26:58,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:26:58,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:26:58,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:26:58,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:26:58,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:26:58,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:26:58,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:26:58,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:26:58,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:26:58,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:26:58,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:26:58,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:26:58,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:26:58,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:26:58,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:26:58,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:26:58,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:26:58,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:26:58,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:26:58,563 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 -> fa6118479ea6bc4aae2360064ac2f184cd09048a [2020-10-19 22:26:58,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:26:58,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:26:58,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:26:58,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:26:58,814 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:26:58,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-10-19 22:26:58,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdc8c0c/3b08766b73bf46cba4c581fb57495a71/FLAG02ea3fcab [2020-10-19 22:26:59,630 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:26:59,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-10-19 22:26:59,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdc8c0c/3b08766b73bf46cba4c581fb57495a71/FLAG02ea3fcab [2020-10-19 22:26:59,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1bdc8c0c/3b08766b73bf46cba4c581fb57495a71 [2020-10-19 22:26:59,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:26:59,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:26:59,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:26:59,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:26:59,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:26:59,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:59" (1/1) ... [2020-10-19 22:26:59,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324cb358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:59, skipping insertion in model container [2020-10-19 22:26:59,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:59" (1/1) ... [2020-10-19 22:26:59,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:26:59,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:00,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:00,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:00,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:00,651 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:00,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00 WrapperNode [2020-10-19 22:27:00,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:00,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:00,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:00,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:00,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:00,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:00,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:00,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:00,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (1/1) ... [2020-10-19 22:27:00,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:00,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:00,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:00,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:00,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (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 22:27:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:27:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:27:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:27:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:01,409 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:02,276 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:02,277 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:02,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:02,288 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:02,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:02 BoogieIcfgContainer [2020-10-19 22:27:02,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:02,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:02,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:02,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:02,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:26:59" (1/3) ... [2020-10-19 22:27:02,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e017e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:02, skipping insertion in model container [2020-10-19 22:27:02,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:00" (2/3) ... [2020-10-19 22:27:02,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e017e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:02, skipping insertion in model container [2020-10-19 22:27:02,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:02" (3/3) ... [2020-10-19 22:27:02,299 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2020-10-19 22:27:02,310 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:02,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:02,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:02,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:02,360 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:02,360 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:02,360 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:02,360 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:02,361 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:02,361 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:02,361 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:27:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:02,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:02,393 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 22:27:02,394 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash 522837677, now seen corresponding path program 1 times [2020-10-19 22:27:02,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:02,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220361335] [2020-10-19 22:27:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:02,782 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 22:27:02,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220361335] [2020-10-19 22:27:02,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:02,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:02,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482917807] [2020-10-19 22:27:02,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:02,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:02,806 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:27:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:03,567 INFO L93 Difference]: Finished difference Result 314 states and 528 transitions. [2020-10-19 22:27:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:03,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:03,584 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:27:03,585 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:27:03,589 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 22:27:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:27:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:27:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2020-10-19 22:27:03,643 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 45 [2020-10-19 22:27:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:03,644 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2020-10-19 22:27:03,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2020-10-19 22:27:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:27:03,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:03,647 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 22:27:03,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:27:03,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:03,649 INFO L82 PathProgramCache]: Analyzing trace with hash -428665669, now seen corresponding path program 1 times [2020-10-19 22:27:03,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:03,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233089814] [2020-10-19 22:27:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:03,804 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 22:27:03,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233089814] [2020-10-19 22:27:03,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:03,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:03,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729962532] [2020-10-19 22:27:03,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:03,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:03,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:03,808 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand 4 states. [2020-10-19 22:27:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:04,264 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2020-10-19 22:27:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:04,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-19 22:27:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:04,267 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:27:04,267 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:27:04,269 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 22:27:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:27:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:27:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2020-10-19 22:27:04,284 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 58 [2020-10-19 22:27:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:04,285 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2020-10-19 22:27:04,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2020-10-19 22:27:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:04,291 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 22:27:04,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:27:04,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1858029875, now seen corresponding path program 1 times [2020-10-19 22:27:04,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:04,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046127533] [2020-10-19 22:27:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:04,404 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 22:27:04,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046127533] [2020-10-19 22:27:04,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:04,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:04,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922908458] [2020-10-19 22:27:04,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:04,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:04,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:04,429 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand 4 states. [2020-10-19 22:27:04,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:04,888 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-10-19 22:27:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:04,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:04,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:04,891 INFO L225 Difference]: With dead ends: 279 [2020-10-19 22:27:04,891 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 22:27:04,892 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 22:27:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 22:27:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2020-10-19 22:27:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2020-10-19 22:27:04,903 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 59 [2020-10-19 22:27:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:04,904 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2020-10-19 22:27:04,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2020-10-19 22:27:04,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:04,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:04,907 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 22:27:04,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:27:04,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:04,909 INFO L82 PathProgramCache]: Analyzing trace with hash -514836424, now seen corresponding path program 1 times [2020-10-19 22:27:04,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:04,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311373476] [2020-10-19 22:27:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:05,040 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 22:27:05,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311373476] [2020-10-19 22:27:05,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:05,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:05,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620544928] [2020-10-19 22:27:05,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:05,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:05,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:05,045 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand 4 states. [2020-10-19 22:27:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:05,449 INFO L93 Difference]: Finished difference Result 277 states and 418 transitions. [2020-10-19 22:27:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:05,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:05,452 INFO L225 Difference]: With dead ends: 277 [2020-10-19 22:27:05,452 INFO L226 Difference]: Without dead ends: 155 [2020-10-19 22:27:05,453 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 22:27:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-19 22:27:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-10-19 22:27:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 213 transitions. [2020-10-19 22:27:05,475 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 213 transitions. Word has length 59 [2020-10-19 22:27:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:05,476 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 213 transitions. [2020-10-19 22:27:05,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 213 transitions. [2020-10-19 22:27:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:05,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:05,480 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 22:27:05,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:27:05,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash 434511736, now seen corresponding path program 1 times [2020-10-19 22:27:05,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:05,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709072952] [2020-10-19 22:27:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:05,602 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 22:27:05,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709072952] [2020-10-19 22:27:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:05,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858484461] [2020-10-19 22:27:05,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:05,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:05,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:05,605 INFO L87 Difference]: Start difference. First operand 141 states and 213 transitions. Second operand 4 states. [2020-10-19 22:27:06,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,104 INFO L93 Difference]: Finished difference Result 276 states and 416 transitions. [2020-10-19 22:27:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,107 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:06,107 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:06,108 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 22:27:06,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:06,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2020-10-19 22:27:06,126 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 59 [2020-10-19 22:27:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,127 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2020-10-19 22:27:06,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2020-10-19 22:27:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:27:06,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,130 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 22:27:06,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:27:06,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1020019103, now seen corresponding path program 1 times [2020-10-19 22:27:06,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124730157] [2020-10-19 22:27:06,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,219 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 22:27:06,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124730157] [2020-10-19 22:27:06,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594835829] [2020-10-19 22:27:06,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,222 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand 4 states. [2020-10-19 22:27:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,552 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-10-19 22:27:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:27:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,555 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:06,555 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:06,556 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 22:27:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions. [2020-10-19 22:27:06,562 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 59 [2020-10-19 22:27:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,563 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 211 transitions. [2020-10-19 22:27:06,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions. [2020-10-19 22:27:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 22:27:06,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,564 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 22:27:06,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:27:06,565 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash 321491268, now seen corresponding path program 1 times [2020-10-19 22:27:06,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423212326] [2020-10-19 22:27:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,619 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 22:27:06,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423212326] [2020-10-19 22:27:06,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098597550] [2020-10-19 22:27:06,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,622 INFO L87 Difference]: Start difference. First operand 141 states and 211 transitions. Second operand 4 states. [2020-10-19 22:27:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,943 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2020-10-19 22:27:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-19 22:27:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,945 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:06,945 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:06,946 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 22:27:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2020-10-19 22:27:06,951 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 60 [2020-10-19 22:27:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,951 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2020-10-19 22:27:06,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2020-10-19 22:27:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:27:06,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,953 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 22:27:06,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:27:06,954 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1080156986, now seen corresponding path program 1 times [2020-10-19 22:27:06,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968294420] [2020-10-19 22:27:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,015 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 22:27:07,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968294420] [2020-10-19 22:27:07,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538775256] [2020-10-19 22:27:07,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,018 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand 4 states. [2020-10-19 22:27:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,337 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-10-19 22:27:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:07,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-19 22:27:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:07,339 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:27:07,340 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:27:07,340 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 22:27:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:27:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:27:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 209 transitions. [2020-10-19 22:27:07,345 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 209 transitions. Word has length 61 [2020-10-19 22:27:07,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:07,346 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 209 transitions. [2020-10-19 22:27:07,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 209 transitions. [2020-10-19 22:27:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:27:07,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:07,347 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 22:27:07,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:27:07,348 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1620376695, now seen corresponding path program 1 times [2020-10-19 22:27:07,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:07,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848307636] [2020-10-19 22:27:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,412 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 22:27:07,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848307636] [2020-10-19 22:27:07,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907107900] [2020-10-19 22:27:07,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,415 INFO L87 Difference]: Start difference. First operand 141 states and 209 transitions. Second operand 4 states. [2020-10-19 22:27:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,712 INFO L93 Difference]: Finished difference Result 266 states and 399 transitions. [2020-10-19 22:27:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:07,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:27:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:07,714 INFO L225 Difference]: With dead ends: 266 [2020-10-19 22:27:07,714 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 22:27:07,715 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 22:27:07,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 22:27:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-19 22:27:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:27:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-10-19 22:27:07,720 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 62 [2020-10-19 22:27:07,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:07,721 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-10-19 22:27:07,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:07,721 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-10-19 22:27:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:27:07,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:07,723 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 22:27:07,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:27:07,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:07,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:07,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1220225295, now seen corresponding path program 1 times [2020-10-19 22:27:07,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:07,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619696231] [2020-10-19 22:27:07,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,776 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 22:27:07,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619696231] [2020-10-19 22:27:07,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69749888] [2020-10-19 22:27:07,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,779 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-10-19 22:27:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:08,145 INFO L93 Difference]: Finished difference Result 306 states and 460 transitions. [2020-10-19 22:27:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:27:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,148 INFO L225 Difference]: With dead ends: 306 [2020-10-19 22:27:08,148 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:27:08,149 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 22:27:08,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:27:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-10-19 22:27:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 246 transitions. [2020-10-19 22:27:08,154 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 246 transitions. Word has length 62 [2020-10-19 22:27:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,155 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 246 transitions. [2020-10-19 22:27:08,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 246 transitions. [2020-10-19 22:27:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:27:08,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,156 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 22:27:08,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:27:08,157 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1563120905, now seen corresponding path program 1 times [2020-10-19 22:27:08,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525631519] [2020-10-19 22:27:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,210 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 22:27:08,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525631519] [2020-10-19 22:27:08,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:08,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74673772] [2020-10-19 22:27:08,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:08,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:08,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:08,212 INFO L87 Difference]: Start difference. First operand 163 states and 246 transitions. Second operand 4 states. [2020-10-19 22:27:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:08,586 INFO L93 Difference]: Finished difference Result 328 states and 497 transitions. [2020-10-19 22:27:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-19 22:27:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,588 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:27:08,588 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:27:08,589 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 22:27:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:27:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-10-19 22:27:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-10-19 22:27:08,600 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 75 [2020-10-19 22:27:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,600 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-10-19 22:27:08,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-10-19 22:27:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:08,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,602 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 22:27:08,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:27:08,603 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1628563473, now seen corresponding path program 1 times [2020-10-19 22:27:08,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054112368] [2020-10-19 22:27:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,666 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 22:27:08,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054112368] [2020-10-19 22:27:08,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:08,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859048952] [2020-10-19 22:27:08,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:08,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:08,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:08,668 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 4 states. [2020-10-19 22:27:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,070 INFO L93 Difference]: Finished difference Result 327 states and 494 transitions. [2020-10-19 22:27:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,073 INFO L225 Difference]: With dead ends: 327 [2020-10-19 22:27:09,073 INFO L226 Difference]: Without dead ends: 183 [2020-10-19 22:27:09,073 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 22:27:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-19 22:27:09,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 163. [2020-10-19 22:27:09,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-10-19 22:27:09,080 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 76 [2020-10-19 22:27:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,080 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-10-19 22:27:09,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-10-19 22:27:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:09,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,082 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 22:27:09,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:27:09,082 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1323210372, now seen corresponding path program 1 times [2020-10-19 22:27:09,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924457038] [2020-10-19 22:27:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,170 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 22:27:09,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924457038] [2020-10-19 22:27:09,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95258458] [2020-10-19 22:27:09,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,174 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 4 states. [2020-10-19 22:27:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,553 INFO L93 Difference]: Finished difference Result 325 states and 490 transitions. [2020-10-19 22:27:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,556 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:09,556 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:09,557 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 22:27:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-10-19 22:27:09,568 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 76 [2020-10-19 22:27:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,570 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-10-19 22:27:09,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-10-19 22:27:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:09,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,572 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 22:27:09,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:27:09,572 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,573 INFO L82 PathProgramCache]: Analyzing trace with hash -373862212, now seen corresponding path program 1 times [2020-10-19 22:27:09,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860649907] [2020-10-19 22:27:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,632 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 22:27:09,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860649907] [2020-10-19 22:27:09,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912290535] [2020-10-19 22:27:09,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,635 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 4 states. [2020-10-19 22:27:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,976 INFO L93 Difference]: Finished difference Result 324 states and 487 transitions. [2020-10-19 22:27:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:09,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,979 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:09,979 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:09,980 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 22:27:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-10-19 22:27:09,990 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 76 [2020-10-19 22:27:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,991 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-10-19 22:27:09,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-10-19 22:27:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:09,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,993 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 22:27:09,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:27:09,993 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1828393051, now seen corresponding path program 1 times [2020-10-19 22:27:09,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118289554] [2020-10-19 22:27:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,066 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 22:27:10,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118289554] [2020-10-19 22:27:10,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464360893] [2020-10-19 22:27:10,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,070 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 4 states. [2020-10-19 22:27:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,539 INFO L93 Difference]: Finished difference Result 324 states and 485 transitions. [2020-10-19 22:27:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,542 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:10,542 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:10,543 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 22:27:10,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2020-10-19 22:27:10,549 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 76 [2020-10-19 22:27:10,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,550 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2020-10-19 22:27:10,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2020-10-19 22:27:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 22:27:10,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,553 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 22:27:10,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:27:10,553 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1031702656, now seen corresponding path program 1 times [2020-10-19 22:27:10,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298155558] [2020-10-19 22:27:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,622 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 22:27:10,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298155558] [2020-10-19 22:27:10,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936410340] [2020-10-19 22:27:10,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,625 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand 4 states. [2020-10-19 22:27:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,109 INFO L93 Difference]: Finished difference Result 324 states and 483 transitions. [2020-10-19 22:27:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-19 22:27:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,112 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:11,113 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:11,114 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 22:27:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2020-10-19 22:27:11,122 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 77 [2020-10-19 22:27:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,123 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2020-10-19 22:27:11,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2020-10-19 22:27:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 22:27:11,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,125 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 22:27:11,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:27:11,126 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -538440438, now seen corresponding path program 1 times [2020-10-19 22:27:11,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838211344] [2020-10-19 22:27:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,183 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 22:27:11,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838211344] [2020-10-19 22:27:11,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:11,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976629189] [2020-10-19 22:27:11,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:11,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:11,187 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand 4 states. [2020-10-19 22:27:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,631 INFO L93 Difference]: Finished difference Result 324 states and 481 transitions. [2020-10-19 22:27:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-19 22:27:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,634 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:27:11,634 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:27:11,634 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 22:27:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:27:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-10-19 22:27:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2020-10-19 22:27:11,642 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 78 [2020-10-19 22:27:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,643 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2020-10-19 22:27:11,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,644 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2020-10-19 22:27:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-19 22:27:11,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,646 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 22:27:11,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:27:11,647 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2007032891, now seen corresponding path program 1 times [2020-10-19 22:27:11,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829489327] [2020-10-19 22:27:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,722 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 22:27:11,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829489327] [2020-10-19 22:27:11,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:11,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769533302] [2020-10-19 22:27:11,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:11,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:11,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:11,726 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand 4 states. [2020-10-19 22:27:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:12,053 INFO L93 Difference]: Finished difference Result 314 states and 466 transitions. [2020-10-19 22:27:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:12,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-19 22:27:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:12,055 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:27:12,056 INFO L226 Difference]: Without dead ends: 170 [2020-10-19 22:27:12,056 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 22:27:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-19 22:27:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2020-10-19 22:27:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2020-10-19 22:27:12,073 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 79 [2020-10-19 22:27:12,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:12,074 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2020-10-19 22:27:12,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:12,074 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2020-10-19 22:27:12,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:12,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:12,075 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 22:27:12,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:27:12,076 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1409260885, now seen corresponding path program 1 times [2020-10-19 22:27:12,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:12,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850632886] [2020-10-19 22:27:12,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,149 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 22:27:12,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850632886] [2020-10-19 22:27:12,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026466759] [2020-10-19 22:27:12,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,152 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 4 states. [2020-10-19 22:27:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:12,628 INFO L93 Difference]: Finished difference Result 403 states and 603 transitions. [2020-10-19 22:27:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:12,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:12,631 INFO L225 Difference]: With dead ends: 403 [2020-10-19 22:27:12,631 INFO L226 Difference]: Without dead ends: 259 [2020-10-19 22:27:12,631 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 22:27:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-19 22:27:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 206. [2020-10-19 22:27:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-19 22:27:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 316 transitions. [2020-10-19 22:27:12,638 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 316 transitions. Word has length 84 [2020-10-19 22:27:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:12,638 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 316 transitions. [2020-10-19 22:27:12,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 316 transitions. [2020-10-19 22:27:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:12,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:12,640 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 22:27:12,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:27:12,641 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:12,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1988313133, now seen corresponding path program 1 times [2020-10-19 22:27:12,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:12,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801133387] [2020-10-19 22:27:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,704 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 22:27:12,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801133387] [2020-10-19 22:27:12,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403347265] [2020-10-19 22:27:12,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,706 INFO L87 Difference]: Start difference. First operand 206 states and 316 transitions. Second operand 4 states. [2020-10-19 22:27:13,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:13,200 INFO L93 Difference]: Finished difference Result 442 states and 685 transitions. [2020-10-19 22:27:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:13,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:13,204 INFO L225 Difference]: With dead ends: 442 [2020-10-19 22:27:13,205 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:27:13,205 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 22:27:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:27:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-10-19 22:27:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 358 transitions. [2020-10-19 22:27:13,217 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 358 transitions. Word has length 84 [2020-10-19 22:27:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:13,217 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 358 transitions. [2020-10-19 22:27:13,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:13,218 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 358 transitions. [2020-10-19 22:27:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:13,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:13,221 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 22:27:13,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:27:13,221 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash -40403587, now seen corresponding path program 1 times [2020-10-19 22:27:13,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:13,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409220212] [2020-10-19 22:27:13,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:13,341 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 22:27:13,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409220212] [2020-10-19 22:27:13,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:13,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:13,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027282239] [2020-10-19 22:27:13,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:13,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:13,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:13,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:13,355 INFO L87 Difference]: Start difference. First operand 230 states and 358 transitions. Second operand 4 states. [2020-10-19 22:27:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,058 INFO L93 Difference]: Finished difference Result 494 states and 764 transitions. [2020-10-19 22:27:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,061 INFO L225 Difference]: With dead ends: 494 [2020-10-19 22:27:14,061 INFO L226 Difference]: Without dead ends: 283 [2020-10-19 22:27:14,062 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 22:27:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-19 22:27:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 230. [2020-10-19 22:27:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 357 transitions. [2020-10-19 22:27:14,070 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 357 transitions. Word has length 97 [2020-10-19 22:27:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,071 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 357 transitions. [2020-10-19 22:27:14,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 357 transitions. [2020-10-19 22:27:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:14,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,073 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 22:27:14,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:27:14,073 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash 271163, now seen corresponding path program 1 times [2020-10-19 22:27:14,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886670552] [2020-10-19 22:27:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,168 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 22:27:14,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886670552] [2020-10-19 22:27:14,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195703372] [2020-10-19 22:27:14,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,171 INFO L87 Difference]: Start difference. First operand 230 states and 357 transitions. Second operand 4 states. [2020-10-19 22:27:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,564 INFO L93 Difference]: Finished difference Result 466 states and 724 transitions. [2020-10-19 22:27:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:14,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,568 INFO L225 Difference]: With dead ends: 466 [2020-10-19 22:27:14,568 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:27:14,569 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 22:27:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:27:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-10-19 22:27:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2020-10-19 22:27:14,576 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 97 [2020-10-19 22:27:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,576 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2020-10-19 22:27:14,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2020-10-19 22:27:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:14,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,578 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 22:27:14,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:27:14,578 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1588160075, now seen corresponding path program 1 times [2020-10-19 22:27:14,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434645697] [2020-10-19 22:27:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,656 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 22:27:14,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434645697] [2020-10-19 22:27:14,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145185051] [2020-10-19 22:27:14,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,658 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand 4 states. [2020-10-19 22:27:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,167 INFO L93 Difference]: Finished difference Result 493 states and 759 transitions. [2020-10-19 22:27:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:15,168 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,170 INFO L225 Difference]: With dead ends: 493 [2020-10-19 22:27:15,170 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 22:27:15,171 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 22:27:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 22:27:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 230. [2020-10-19 22:27:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2020-10-19 22:27:15,180 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 98 [2020-10-19 22:27:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,181 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2020-10-19 22:27:15,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2020-10-19 22:27:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:15,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,183 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 22:27:15,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:27:15,183 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1363613770, now seen corresponding path program 1 times [2020-10-19 22:27:15,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826095488] [2020-10-19 22:27:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,256 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 22:27:15,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826095488] [2020-10-19 22:27:15,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:15,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858124126] [2020-10-19 22:27:15,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:15,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:15,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:15,259 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand 4 states. [2020-10-19 22:27:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,790 INFO L93 Difference]: Finished difference Result 491 states and 755 transitions. [2020-10-19 22:27:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:15,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,793 INFO L225 Difference]: With dead ends: 491 [2020-10-19 22:27:15,793 INFO L226 Difference]: Without dead ends: 280 [2020-10-19 22:27:15,794 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 22:27:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-19 22:27:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 230. [2020-10-19 22:27:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 354 transitions. [2020-10-19 22:27:15,803 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 354 transitions. Word has length 98 [2020-10-19 22:27:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,804 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 354 transitions. [2020-10-19 22:27:15,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 354 transitions. [2020-10-19 22:27:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,805 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 22:27:15,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:27:15,807 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,808 INFO L82 PathProgramCache]: Analyzing trace with hash -414265610, now seen corresponding path program 1 times [2020-10-19 22:27:15,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231559599] [2020-10-19 22:27:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,919 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 22:27:15,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231559599] [2020-10-19 22:27:15,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:15,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925296384] [2020-10-19 22:27:15,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:15,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:15,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:15,923 INFO L87 Difference]: Start difference. First operand 230 states and 354 transitions. Second operand 4 states. [2020-10-19 22:27:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:16,404 INFO L93 Difference]: Finished difference Result 490 states and 752 transitions. [2020-10-19 22:27:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:16,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:16,408 INFO L225 Difference]: With dead ends: 490 [2020-10-19 22:27:16,409 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 22:27:16,409 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 22:27:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 22:27:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 230. [2020-10-19 22:27:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 353 transitions. [2020-10-19 22:27:16,420 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 353 transitions. Word has length 98 [2020-10-19 22:27:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:16,421 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 353 transitions. [2020-10-19 22:27:16,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 353 transitions. [2020-10-19 22:27:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:16,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:16,424 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 22:27:16,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:27:16,424 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:16,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1868796449, now seen corresponding path program 1 times [2020-10-19 22:27:16,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:16,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596967397] [2020-10-19 22:27:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:16,556 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 22:27:16,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596967397] [2020-10-19 22:27:16,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:16,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:27:16,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355831355] [2020-10-19 22:27:16,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:27:16,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:27:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:16,559 INFO L87 Difference]: Start difference. First operand 230 states and 353 transitions. Second operand 5 states. [2020-10-19 22:27:17,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:17,148 INFO L93 Difference]: Finished difference Result 462 states and 714 transitions. [2020-10-19 22:27:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:27:17,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-19 22:27:17,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:17,151 INFO L225 Difference]: With dead ends: 462 [2020-10-19 22:27:17,151 INFO L226 Difference]: Without dead ends: 251 [2020-10-19 22:27:17,152 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 22:27:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-19 22:27:17,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2020-10-19 22:27:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 379 transitions. [2020-10-19 22:27:17,160 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 379 transitions. Word has length 98 [2020-10-19 22:27:17,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:17,160 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 379 transitions. [2020-10-19 22:27:17,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:27:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 379 transitions. [2020-10-19 22:27:17,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:17,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:17,162 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 22:27:17,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:27:17,164 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash -102696520, now seen corresponding path program 1 times [2020-10-19 22:27:17,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:17,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740843555] [2020-10-19 22:27:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:17,251 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 22:27:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740843555] [2020-10-19 22:27:17,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:17,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741913322] [2020-10-19 22:27:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:17,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:17,254 INFO L87 Difference]: Start difference. First operand 250 states and 379 transitions. Second operand 4 states. [2020-10-19 22:27:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:17,647 INFO L93 Difference]: Finished difference Result 503 states and 764 transitions. [2020-10-19 22:27:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:17,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:17,650 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:17,650 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:17,651 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 22:27:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-19 22:27:17,660 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 98 [2020-10-19 22:27:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:17,660 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-19 22:27:17,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:17,661 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-19 22:27:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:17,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:17,662 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 22:27:17,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:27:17,663 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash 846651640, now seen corresponding path program 1 times [2020-10-19 22:27:17,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:17,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550641055] [2020-10-19 22:27:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:17,729 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 22:27:17,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550641055] [2020-10-19 22:27:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:17,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:17,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316333839] [2020-10-19 22:27:17,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:17,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:17,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:17,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:17,732 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 4 states. [2020-10-19 22:27:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:18,212 INFO L93 Difference]: Finished difference Result 502 states and 761 transitions. [2020-10-19 22:27:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:18,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:18,215 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:18,215 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:18,216 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 22:27:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:18,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 377 transitions. [2020-10-19 22:27:18,224 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 377 transitions. Word has length 98 [2020-10-19 22:27:18,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:18,224 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 377 transitions. [2020-10-19 22:27:18,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 377 transitions. [2020-10-19 22:27:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:18,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:18,226 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 22:27:18,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:27:18,227 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:18,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:18,227 INFO L82 PathProgramCache]: Analyzing trace with hash 651492985, now seen corresponding path program 1 times [2020-10-19 22:27:18,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:18,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200527838] [2020-10-19 22:27:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:18,286 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 22:27:18,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200527838] [2020-10-19 22:27:18,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:18,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:18,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439426395] [2020-10-19 22:27:18,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:18,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:18,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:18,288 INFO L87 Difference]: Start difference. First operand 250 states and 377 transitions. Second operand 4 states. [2020-10-19 22:27:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:18,818 INFO L93 Difference]: Finished difference Result 530 states and 797 transitions. [2020-10-19 22:27:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:18,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:18,822 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:18,822 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:18,825 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 22:27:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 376 transitions. [2020-10-19 22:27:18,838 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 376 transitions. Word has length 99 [2020-10-19 22:27:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:18,839 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 376 transitions. [2020-10-19 22:27:18,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 376 transitions. [2020-10-19 22:27:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:18,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:18,842 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 22:27:18,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:27:18,843 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1085222071, now seen corresponding path program 1 times [2020-10-19 22:27:18,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:18,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435450127] [2020-10-19 22:27:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:18,928 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 22:27:18,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435450127] [2020-10-19 22:27:18,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:18,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:18,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110526459] [2020-10-19 22:27:18,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:18,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:18,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:18,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:18,932 INFO L87 Difference]: Start difference. First operand 250 states and 376 transitions. Second operand 4 states. [2020-10-19 22:27:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:19,371 INFO L93 Difference]: Finished difference Result 502 states and 757 transitions. [2020-10-19 22:27:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:19,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:19,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:19,374 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:19,374 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:19,375 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 22:27:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2020-10-19 22:27:19,384 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 99 [2020-10-19 22:27:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:19,384 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2020-10-19 22:27:19,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2020-10-19 22:27:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:19,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:19,387 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 22:27:19,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:27:19,387 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:19,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:19,388 INFO L82 PathProgramCache]: Analyzing trace with hash 199692210, now seen corresponding path program 1 times [2020-10-19 22:27:19,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:19,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145565148] [2020-10-19 22:27:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:19,467 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 22:27:19,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145565148] [2020-10-19 22:27:19,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:19,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:19,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082096196] [2020-10-19 22:27:19,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:19,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:19,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:19,470 INFO L87 Difference]: Start difference. First operand 250 states and 375 transitions. Second operand 4 states. [2020-10-19 22:27:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:19,943 INFO L93 Difference]: Finished difference Result 530 states and 793 transitions. [2020-10-19 22:27:19,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:19,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:19,945 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:19,945 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:19,946 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 22:27:19,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2020-10-19 22:27:19,954 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 100 [2020-10-19 22:27:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:19,954 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2020-10-19 22:27:19,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2020-10-19 22:27:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:19,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:19,956 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 22:27:19,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:27:19,956 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 760391988, now seen corresponding path program 1 times [2020-10-19 22:27:19,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:19,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606366095] [2020-10-19 22:27:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:20,015 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 22:27:20,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606366095] [2020-10-19 22:27:20,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:20,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:20,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144274332] [2020-10-19 22:27:20,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:20,017 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand 4 states. [2020-10-19 22:27:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:20,381 INFO L93 Difference]: Finished difference Result 502 states and 753 transitions. [2020-10-19 22:27:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:20,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:20,383 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:20,383 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:20,384 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 22:27:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:20,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2020-10-19 22:27:20,393 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 100 [2020-10-19 22:27:20,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:20,394 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2020-10-19 22:27:20,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2020-10-19 22:27:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:20,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:20,395 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 22:27:20,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 22:27:20,396 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2123930572, now seen corresponding path program 1 times [2020-10-19 22:27:20,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407605287] [2020-10-19 22:27:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:20,474 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 22:27:20,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407605287] [2020-10-19 22:27:20,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:20,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:20,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949653575] [2020-10-19 22:27:20,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:20,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:20,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:20,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:20,477 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand 4 states. [2020-10-19 22:27:20,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:20,954 INFO L93 Difference]: Finished difference Result 530 states and 789 transitions. [2020-10-19 22:27:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:20,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:20,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:20,957 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:20,957 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:20,958 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 22:27:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:20,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 372 transitions. [2020-10-19 22:27:20,966 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 372 transitions. Word has length 101 [2020-10-19 22:27:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:20,967 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 372 transitions. [2020-10-19 22:27:20,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 372 transitions. [2020-10-19 22:27:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:20,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:20,968 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 22:27:20,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 22:27:20,969 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1922106638, now seen corresponding path program 1 times [2020-10-19 22:27:20,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:20,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417422634] [2020-10-19 22:27:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:21,042 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 22:27:21,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417422634] [2020-10-19 22:27:21,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:21,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:21,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276442161] [2020-10-19 22:27:21,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:21,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:21,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:21,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,044 INFO L87 Difference]: Start difference. First operand 250 states and 372 transitions. Second operand 4 states. [2020-10-19 22:27:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:21,448 INFO L93 Difference]: Finished difference Result 502 states and 749 transitions. [2020-10-19 22:27:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:21,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:21,450 INFO L225 Difference]: With dead ends: 502 [2020-10-19 22:27:21,450 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 22:27:21,450 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 22:27:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 22:27:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-10-19 22:27:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 371 transitions. [2020-10-19 22:27:21,459 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 371 transitions. Word has length 101 [2020-10-19 22:27:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:21,459 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 371 transitions. [2020-10-19 22:27:21,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 371 transitions. [2020-10-19 22:27:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:21,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:21,461 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 22:27:21,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 22:27:21,462 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1950473869, now seen corresponding path program 1 times [2020-10-19 22:27:21,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:21,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532061440] [2020-10-19 22:27:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:21,529 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 22:27:21,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532061440] [2020-10-19 22:27:21,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:21,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:21,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882105601] [2020-10-19 22:27:21,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:21,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:21,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:21,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,531 INFO L87 Difference]: Start difference. First operand 250 states and 371 transitions. Second operand 4 states. [2020-10-19 22:27:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:21,984 INFO L93 Difference]: Finished difference Result 520 states and 773 transitions. [2020-10-19 22:27:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:21,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:21,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:21,987 INFO L225 Difference]: With dead ends: 520 [2020-10-19 22:27:21,987 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:27:21,988 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 22:27:21,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:27:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-10-19 22:27:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 370 transitions. [2020-10-19 22:27:21,996 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 370 transitions. Word has length 102 [2020-10-19 22:27:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:21,996 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 370 transitions. [2020-10-19 22:27:21,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 370 transitions. [2020-10-19 22:27:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:21,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:21,998 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 22:27:21,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 22:27:21,998 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:21,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:21,998 INFO L82 PathProgramCache]: Analyzing trace with hash -382918769, now seen corresponding path program 1 times [2020-10-19 22:27:21,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:21,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130294754] [2020-10-19 22:27:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:22,063 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 22:27:22,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130294754] [2020-10-19 22:27:22,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:22,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:22,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519106844] [2020-10-19 22:27:22,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:22,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:22,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:22,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:22,065 INFO L87 Difference]: Start difference. First operand 250 states and 370 transitions. Second operand 4 states. [2020-10-19 22:27:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:22,396 INFO L93 Difference]: Finished difference Result 492 states and 733 transitions. [2020-10-19 22:27:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:22,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:22,403 INFO L225 Difference]: With dead ends: 492 [2020-10-19 22:27:22,403 INFO L226 Difference]: Without dead ends: 261 [2020-10-19 22:27:22,404 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 22:27:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-19 22:27:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 250. [2020-10-19 22:27:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2020-10-19 22:27:22,412 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 102 [2020-10-19 22:27:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:22,412 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2020-10-19 22:27:22,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2020-10-19 22:27:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:22,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:22,413 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 22:27:22,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 22:27:22,414 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:22,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash -2022470311, now seen corresponding path program 1 times [2020-10-19 22:27:22,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:22,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971845417] [2020-10-19 22:27:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:22,480 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 22:27:22,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971845417] [2020-10-19 22:27:22,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:22,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:22,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602074254] [2020-10-19 22:27:22,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:22,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:22,481 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 4 states. [2020-10-19 22:27:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:22,925 INFO L93 Difference]: Finished difference Result 520 states and 769 transitions. [2020-10-19 22:27:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:22,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-19 22:27:22,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:22,928 INFO L225 Difference]: With dead ends: 520 [2020-10-19 22:27:22,929 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:27:22,929 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 22:27:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:27:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-10-19 22:27:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2020-10-19 22:27:22,938 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 106 [2020-10-19 22:27:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:22,938 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2020-10-19 22:27:22,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2020-10-19 22:27:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:22,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:22,939 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 22:27:22,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 22:27:22,940 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash 586317147, now seen corresponding path program 1 times [2020-10-19 22:27:22,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:22,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304653145] [2020-10-19 22:27:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:23,008 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 22:27:23,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304653145] [2020-10-19 22:27:23,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:23,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306596702] [2020-10-19 22:27:23,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:23,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:23,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:23,012 INFO L87 Difference]: Start difference. First operand 250 states and 368 transitions. Second operand 3 states. [2020-10-19 22:27:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,067 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2020-10-19 22:27:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:23,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,070 INFO L225 Difference]: With dead ends: 708 [2020-10-19 22:27:23,071 INFO L226 Difference]: Without dead ends: 477 [2020-10-19 22:27:23,071 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 22:27:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-19 22:27:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2020-10-19 22:27:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-19 22:27:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 706 transitions. [2020-10-19 22:27:23,086 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 706 transitions. Word has length 106 [2020-10-19 22:27:23,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,086 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 706 transitions. [2020-10-19 22:27:23,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:23,086 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 706 transitions. [2020-10-19 22:27:23,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:23,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,088 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 22:27:23,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:27:23,088 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash -629836579, now seen corresponding path program 1 times [2020-10-19 22:27:23,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:23,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098385450] [2020-10-19 22:27:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:23,144 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 22:27:23,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098385450] [2020-10-19 22:27:23,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:23,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112425814] [2020-10-19 22:27:23,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:23,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:23,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:23,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:23,146 INFO L87 Difference]: Start difference. First operand 477 states and 706 transitions. Second operand 3 states. [2020-10-19 22:27:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,186 INFO L93 Difference]: Finished difference Result 962 states and 1427 transitions. [2020-10-19 22:27:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:23,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,189 INFO L225 Difference]: With dead ends: 962 [2020-10-19 22:27:23,190 INFO L226 Difference]: Without dead ends: 504 [2020-10-19 22:27:23,190 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 22:27:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-19 22:27:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-19 22:27:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-19 22:27:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 741 transitions. [2020-10-19 22:27:23,203 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 741 transitions. Word has length 106 [2020-10-19 22:27:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,204 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 741 transitions. [2020-10-19 22:27:23,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:23,204 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 741 transitions. [2020-10-19 22:27:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:23,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,205 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 22:27:23,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 22:27:23,206 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1216112801, now seen corresponding path program 1 times [2020-10-19 22:27:23,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:23,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500162089] [2020-10-19 22:27:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:23,254 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 22:27:23,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500162089] [2020-10-19 22:27:23,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:23,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319716440] [2020-10-19 22:27:23,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:23,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:23,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:23,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:23,256 INFO L87 Difference]: Start difference. First operand 504 states and 741 transitions. Second operand 3 states. [2020-10-19 22:27:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,281 INFO L93 Difference]: Finished difference Result 991 states and 1463 transitions. [2020-10-19 22:27:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:23,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,284 INFO L225 Difference]: With dead ends: 991 [2020-10-19 22:27:23,284 INFO L226 Difference]: Without dead ends: 506 [2020-10-19 22:27:23,285 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 22:27:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-19 22:27:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-10-19 22:27:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-19 22:27:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 743 transitions. [2020-10-19 22:27:23,302 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 743 transitions. Word has length 106 [2020-10-19 22:27:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,302 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 743 transitions. [2020-10-19 22:27:23,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 743 transitions. [2020-10-19 22:27:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:23,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,305 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 22:27:23,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 22:27:23,305 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,306 INFO L82 PathProgramCache]: Analyzing trace with hash -536013004, now seen corresponding path program 1 times [2020-10-19 22:27:23,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:23,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407236059] [2020-10-19 22:27:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:23,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:23,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:23,720 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:27:23,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:23,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-19 22:27:23,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:23 BoogieIcfgContainer [2020-10-19 22:27:23,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:23,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:23,851 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:23,851 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:23,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:02" (3/4) ... [2020-10-19 22:27:23,854 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:27:23,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:23,857 INFO L168 Benchmark]: Toolchain (without parser) took 24012.39 ms. Allocated memory was 40.4 MB in the beginning and 127.4 MB in the end (delta: 87.0 MB). Free memory was 16.3 MB in the beginning and 77.4 MB in the end (delta: -61.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,857 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 31.5 MB. Free memory was 7.9 MB in the beginning and 7.8 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.74 ms. Allocated memory was 40.4 MB in the beginning and 43.5 MB in the end (delta: 3.1 MB). Free memory was 15.5 MB in the beginning and 20.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.94 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 15.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,859 INFO L168 Benchmark]: Boogie Preprocessor took 194.39 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.1 MB in the beginning and 24.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,859 INFO L168 Benchmark]: RCFGBuilder took 1338.77 ms. Allocated memory was 45.6 MB in the beginning and 54.5 MB in the end (delta: 8.9 MB). Free memory was 24.4 MB in the beginning and 28.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,860 INFO L168 Benchmark]: TraceAbstraction took 21558.82 ms. Allocated memory was 54.5 MB in the beginning and 127.4 MB in the end (delta: 72.9 MB). Free memory was 28.1 MB in the beginning and 77.4 MB in the end (delta: -49.3 MB). Peak memory consumption was 93.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:23,860 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 127.4 MB. Free memory is still 77.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:23,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 31.5 MB. Free memory was 7.9 MB in the beginning and 7.8 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 801.74 ms. Allocated memory was 40.4 MB in the beginning and 43.5 MB in the end (delta: 3.1 MB). Free memory was 15.5 MB in the beginning and 20.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 103.94 ms. Allocated memory is still 43.5 MB. Free memory was 19.7 MB in the beginning and 15.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 194.39 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 15.1 MB in the beginning and 24.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1338.77 ms. Allocated memory was 45.6 MB in the beginning and 54.5 MB in the end (delta: 8.9 MB). Free memory was 24.4 MB in the beginning and 28.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 21558.82 ms. Allocated memory was 54.5 MB in the beginning and 127.4 MB in the end (delta: 72.9 MB). Free memory was 28.1 MB in the beginning and 77.4 MB in the end (delta: -49.3 MB). Peak memory consumption was 93.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.06 ms. Allocated memory is still 127.4 MB. Free memory is still 77.4 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}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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 [L1557] EXPR s->session [L1557] EXPR s->s3 [L1557] EXPR (s->s3)->tmp.new_cipher [L1557] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1558] COND FALSE !(! tmp___9) [L1564] ret = __VERIFIER_nondet_int() [L1565] COND TRUE blastFlag == 2 [L1566] blastFlag = 3 VAL [init=1, SSLv3_server_data={6:0}] [L1570] COND FALSE !(ret <= 0) [L1575] s->state = 8672 [L1576] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1577] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={6:0}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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 [L1586] ret = __VERIFIER_nondet_int() [L1587] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.03.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: 21.3s, OverallIterations: 41, TraceHistogramMax: 4, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7515 SDtfs, 2112 SDslu, 10973 SDs, 0 SdLazy, 6885 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s 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=506occurred 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: 0.4s AutomataMinimizationTime, 40 MinimizatonAttempts, 924 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.8s 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 22:27:26,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:27:26,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:27:26,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:27:26,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:27:26,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:27:26,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:27:26,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:27:26,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:27:26,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:27:26,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:27:26,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:27:26,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:27:26,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:27:26,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:27:26,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:27:26,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:27:26,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:27:26,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:27:26,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:27:26,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:27:26,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:27:26,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:27:26,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:27:26,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:27:26,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:27:26,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:27:26,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:27:26,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:27:26,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:27:26,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:26,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:26,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:26,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:26,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:26,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:26,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:26,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:26,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:26,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:26,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:26,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:27:26,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:26,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:26,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:26,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:26,194 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:26,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:26,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:26,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:26,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:26,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:26,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:26,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:26,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:27:26,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:27:26,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:26,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:26,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:26,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:26,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:26,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:26,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:26,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:26,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:26,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:26,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:26,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:26,201 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:27:26,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:27:26,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:26,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:26,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:27:26,202 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 -> fa6118479ea6bc4aae2360064ac2f184cd09048a [2020-10-19 22:27:26,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:26,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:26,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:26,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:26,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:26,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-10-19 22:27:26,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebd214c0/3be51e3205bf4ed19ec92f1ab28f6f56/FLAG873fde016 [2020-10-19 22:27:27,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:27:27,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-10-19 22:27:27,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebd214c0/3be51e3205bf4ed19ec92f1ab28f6f56/FLAG873fde016 [2020-10-19 22:27:27,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ebd214c0/3be51e3205bf4ed19ec92f1ab28f6f56 [2020-10-19 22:27:27,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:27:27,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:27:27,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:27,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:27:27,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:27:27,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:27" (1/1) ... [2020-10-19 22:27:27,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2b2f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:27, skipping insertion in model container [2020-10-19 22:27:27,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:27" (1/1) ... [2020-10-19 22:27:27,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:27:27,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:27,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:27,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:28,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:28,222 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:28,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28 WrapperNode [2020-10-19 22:27:28,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:28,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:28,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:28,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:28,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:28,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:28,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:28,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:28,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (1/1) ... [2020-10-19 22:27:28,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:28,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:28,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:28,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:28,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (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 22:27:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:27:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 22:27:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:28,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 22:27:28,839 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:31,455 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:31,455 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:31,466 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:31,466 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:31,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:31 BoogieIcfgContainer [2020-10-19 22:27:31,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:31,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:31,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:31,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:31,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:27:27" (1/3) ... [2020-10-19 22:27:31,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a9fd7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:31, skipping insertion in model container [2020-10-19 22:27:31,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:28" (2/3) ... [2020-10-19 22:27:31,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a9fd7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:31, skipping insertion in model container [2020-10-19 22:27:31,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:31" (3/3) ... [2020-10-19 22:27:31,477 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2020-10-19 22:27:31,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:31,497 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:31,510 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:31,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:31,535 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:31,536 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:31,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:31,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:31,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:31,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:31,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:27:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:31,563 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 22:27:31,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash 522837677, now seen corresponding path program 1 times [2020-10-19 22:27:31,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:31,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930443770] [2020-10-19 22:27:31,582 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 22:27:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:31,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:31,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:31,924 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 22:27:31,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:31,969 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 22:27:31,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930443770] [2020-10-19 22:27:31,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:31,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:31,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736708151] [2020-10-19 22:27:31,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:31,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:31,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:31,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:32,022 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:27:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:32,149 INFO L93 Difference]: Finished difference Result 538 states and 913 transitions. [2020-10-19 22:27:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:32,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:32,172 INFO L225 Difference]: With dead ends: 538 [2020-10-19 22:27:32,172 INFO L226 Difference]: Without dead ends: 363 [2020-10-19 22:27:32,177 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 22:27:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-19 22:27:32,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-10-19 22:27:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-19 22:27:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 551 transitions. [2020-10-19 22:27:32,257 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 551 transitions. Word has length 45 [2020-10-19 22:27:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:32,257 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 551 transitions. [2020-10-19 22:27:32,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 551 transitions. [2020-10-19 22:27:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:27:32,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:32,267 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 22:27:32,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:27:32,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:32,469 INFO L82 PathProgramCache]: Analyzing trace with hash 856140206, now seen corresponding path program 1 times [2020-10-19 22:27:32,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:32,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289439435] [2020-10-19 22:27:32,470 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 22:27:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:32,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:32,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:32,886 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 22:27:32,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:33,101 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 22:27:33,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289439435] [2020-10-19 22:27:33,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:33,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:33,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865103302] [2020-10-19 22:27:33,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:33,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:33,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:33,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:33,106 INFO L87 Difference]: Start difference. First operand 363 states and 551 transitions. Second operand 4 states. [2020-10-19 22:27:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:33,869 INFO L93 Difference]: Finished difference Result 834 states and 1272 transitions. [2020-10-19 22:27:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:33,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:27:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:33,874 INFO L225 Difference]: With dead ends: 834 [2020-10-19 22:27:33,874 INFO L226 Difference]: Without dead ends: 598 [2020-10-19 22:27:33,877 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 22:27:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-19 22:27:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-19 22:27:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-19 22:27:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 906 transitions. [2020-10-19 22:27:33,921 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 906 transitions. Word has length 103 [2020-10-19 22:27:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:33,922 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 906 transitions. [2020-10-19 22:27:33,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 906 transitions. [2020-10-19 22:27:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:33,932 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 22:27:34,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:27:34,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash -536013004, now seen corresponding path program 1 times [2020-10-19 22:27:34,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:34,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556584373] [2020-10-19 22:27:34,150 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 22:27:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:34,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:35,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:35,440 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:27:35,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:35,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:27:35,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:35 BoogieIcfgContainer [2020-10-19 22:27:35,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:35,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:35,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:35,818 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:35,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:31" (3/4) ... [2020-10-19 22:27:35,821 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:27:35,970 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:27:35,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:35,973 INFO L168 Benchmark]: Toolchain (without parser) took 8634.69 ms. Allocated memory was 37.2 MB in the beginning and 90.2 MB in the end (delta: 53.0 MB). Free memory was 15.1 MB in the beginning and 38.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,973 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 879.76 ms. Allocated memory was 37.2 MB in the beginning and 47.2 MB in the end (delta: 10.0 MB). Free memory was 14.2 MB in the beginning and 15.9 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.42 ms. Allocated memory is still 47.2 MB. Free memory was 15.6 MB in the beginning and 11.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,975 INFO L168 Benchmark]: Boogie Preprocessor took 106.22 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 11.1 MB in the beginning and 18.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,975 INFO L168 Benchmark]: RCFGBuilder took 3040.24 ms. Allocated memory was 47.7 MB in the beginning and 60.3 MB in the end (delta: 12.6 MB). Free memory was 18.1 MB in the beginning and 33.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,975 INFO L168 Benchmark]: TraceAbstraction took 4347.28 ms. Allocated memory was 60.3 MB in the beginning and 90.2 MB in the end (delta: 29.9 MB). Free memory was 32.8 MB in the beginning and 57.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,976 INFO L168 Benchmark]: Witness Printer took 152.90 ms. Allocated memory is still 90.2 MB. Free memory was 57.3 MB in the beginning and 38.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:35,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 34.1 MB. Free memory was 10.0 MB in the beginning and 10.0 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 879.76 ms. Allocated memory was 37.2 MB in the beginning and 47.2 MB in the end (delta: 10.0 MB). Free memory was 14.2 MB in the beginning and 15.9 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 97.42 ms. Allocated memory is still 47.2 MB. Free memory was 15.6 MB in the beginning and 11.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 106.22 ms. Allocated memory was 47.2 MB in the beginning and 47.7 MB in the end (delta: 524.3 kB). Free memory was 11.1 MB in the beginning and 18.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3040.24 ms. Allocated memory was 47.7 MB in the beginning and 60.3 MB in the end (delta: 12.6 MB). Free memory was 18.1 MB in the beginning and 33.2 MB in the end (delta: -15.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4347.28 ms. Allocated memory was 60.3 MB in the beginning and 90.2 MB in the end (delta: 29.9 MB). Free memory was 32.8 MB in the beginning and 57.3 MB in the end (delta: -24.5 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.3 GB. * Witness Printer took 152.90 ms. Allocated memory is still 90.2 MB. Free memory was 57.3 MB in the beginning and 38.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 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}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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 [L1557] EXPR s->session [L1557] EXPR s->s3 [L1557] EXPR (s->s3)->tmp.new_cipher [L1557] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1558] COND FALSE !(! tmp___9) [L1564] ret = __VERIFIER_nondet_int() [L1565] COND TRUE blastFlag == 2 [L1566] blastFlag = 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1570] COND FALSE !(ret <= 0) [L1575] s->state = 8672 [L1576] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1577] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1664] EXPR s->s3 [L1664] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1664] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1693] 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 [L1586] ret = __VERIFIER_nondet_int() [L1587] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.03.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: 4.1s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 844 SDslu, 783 SDs, 0 SdLazy, 49 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s 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=598occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s 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...