./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer --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=/tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-29 20:14:34,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:14:34,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:14:34,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:14:34,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:14:34,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:14:34,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:14:34,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:14:34,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:14:34,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:14:34,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:14:34,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:14:34,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:14:34,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:14:34,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:14:34,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:14:34,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:14:34,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:14:34,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:14:34,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:14:34,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:14:34,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:14:34,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:14:34,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:14:34,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:14:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:14:34,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:14:34,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:14:34,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:14:34,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:14:34,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:14:34,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:14:34,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:14:34,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:14:34,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:14:34,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:14:34,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:14:34,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:14:34,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:14:34,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:14:34,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:14:34,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:14:34,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:14:34,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:14:34,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:14:34,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:14:34,788 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:14:34,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:14:34,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:14:34,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:14:34,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:14:34,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:14:34,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:14:34,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:14:34,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:14:34,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:14:34,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:14:34,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:14:34,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:14:34,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:14:34,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:14:34,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:14:34,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:14:34,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:14:34,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:14:34,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:14:34,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:14:34,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:14:34,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:14:34,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:14:34,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:14:34,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6118479ea6bc4aae2360064ac2f184cd09048a [2020-11-29 20:14:35,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:14:35,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:14:35,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:14:35,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:14:35,181 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:14:35,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-11-29 20:14:35,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/9bc916708/0d8ac7303c4d47f884a1650d18850309/FLAGb5a76fd58 [2020-11-29 20:14:36,169 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:14:36,170 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-11-29 20:14:36,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/9bc916708/0d8ac7303c4d47f884a1650d18850309/FLAGb5a76fd58 [2020-11-29 20:14:36,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/9bc916708/0d8ac7303c4d47f884a1650d18850309 [2020-11-29 20:14:36,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:14:36,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:14:36,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:14:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:14:36,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:14:36,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:14:36" (1/1) ... [2020-11-29 20:14:36,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e7115e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:36, skipping insertion in model container [2020-11-29 20:14:36,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:14:36" (1/1) ... [2020-11-29 20:14:36,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:14:36,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:14:37,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:14:37,190 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:14:37,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:14:37,371 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:14:37,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37 WrapperNode [2020-11-29 20:14:37,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:14:37,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:14:37,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:14:37,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:14:37,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:14:37,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:14:37,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:14:37,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:14:37,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... [2020-11-29 20:14:37,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:14:37,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:14:37,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:14:37,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:14:37,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/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 [2020-11-29 20:14:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:14:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:14:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:14:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:14:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:14:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:14:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:14:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:14:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:14:38,123 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 20:14:39,436 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 20:14:39,436 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 20:14:39,459 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:14:39,459 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:14:39,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:39 BoogieIcfgContainer [2020-11-29 20:14:39,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:14:39,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:14:39,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:14:39,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:14:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:14:36" (1/3) ... [2020-11-29 20:14:39,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f858e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:14:39, skipping insertion in model container [2020-11-29 20:14:39,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:14:37" (2/3) ... [2020-11-29 20:14:39,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f858e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:14:39, skipping insertion in model container [2020-11-29 20:14:39,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:39" (3/3) ... [2020-11-29 20:14:39,480 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2020-11-29 20:14:39,496 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:14:39,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:14:39,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:14:39,579 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:14:39,580 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:14:39,580 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:14:39,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:14:39,581 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:14:39,581 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:14:39,581 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:14:39,581 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:14:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-11-29 20:14:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:14:39,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:39,627 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] [2020-11-29 20:14:39,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash 522837677, now seen corresponding path program 1 times [2020-11-29 20:14:39,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540657420] [2020-11-29 20:14:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:40,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540657420] [2020-11-29 20:14:40,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:40,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:40,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631090852] [2020-11-29 20:14:40,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:40,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:40,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:40,262 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-11-29 20:14:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:41,153 INFO L93 Difference]: Finished difference Result 314 states and 528 transitions. [2020-11-29 20:14:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:41,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 20:14:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:41,184 INFO L225 Difference]: With dead ends: 314 [2020-11-29 20:14:41,184 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 20:14:41,200 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 [2020-11-29 20:14:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 20:14:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-29 20:14:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2020-11-29 20:14:41,270 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 45 [2020-11-29 20:14:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:41,271 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2020-11-29 20:14:41,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2020-11-29 20:14:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 20:14:41,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:41,277 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] [2020-11-29 20:14:41,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:14:41,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash -428665669, now seen corresponding path program 1 times [2020-11-29 20:14:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:41,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326049724] [2020-11-29 20:14:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:41,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326049724] [2020-11-29 20:14:41,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:41,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:41,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776107412] [2020-11-29 20:14:41,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:41,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:41,484 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand 4 states. [2020-11-29 20:14:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:42,170 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2020-11-29 20:14:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:42,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-11-29 20:14:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:42,174 INFO L225 Difference]: With dead ends: 280 [2020-11-29 20:14:42,174 INFO L226 Difference]: Without dead ends: 158 [2020-11-29 20:14:42,176 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 [2020-11-29 20:14:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-29 20:14:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-11-29 20:14:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2020-11-29 20:14:42,207 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 58 [2020-11-29 20:14:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:42,208 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2020-11-29 20:14:42,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2020-11-29 20:14:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 20:14:42,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:42,212 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] [2020-11-29 20:14:42,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:14:42,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:42,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1858029875, now seen corresponding path program 1 times [2020-11-29 20:14:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:42,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496886004] [2020-11-29 20:14:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:42,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496886004] [2020-11-29 20:14:42,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:42,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:42,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15374591] [2020-11-29 20:14:42,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:42,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:42,389 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand 4 states. [2020-11-29 20:14:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:43,007 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-11-29 20:14:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:43,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 20:14:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:43,010 INFO L225 Difference]: With dead ends: 279 [2020-11-29 20:14:43,011 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 20:14:43,012 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 [2020-11-29 20:14:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 20:14:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2020-11-29 20:14:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2020-11-29 20:14:43,031 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 59 [2020-11-29 20:14:43,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:43,032 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2020-11-29 20:14:43,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2020-11-29 20:14:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 20:14:43,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:43,042 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] [2020-11-29 20:14:43,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:14:43,042 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash -514836424, now seen corresponding path program 1 times [2020-11-29 20:14:43,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:43,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788151156] [2020-11-29 20:14:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:43,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788151156] [2020-11-29 20:14:43,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:43,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:43,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409775623] [2020-11-29 20:14:43,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:43,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:43,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:43,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:43,194 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand 4 states. [2020-11-29 20:14:43,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:43,768 INFO L93 Difference]: Finished difference Result 277 states and 418 transitions. [2020-11-29 20:14:43,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:43,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 20:14:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:43,771 INFO L225 Difference]: With dead ends: 277 [2020-11-29 20:14:43,771 INFO L226 Difference]: Without dead ends: 155 [2020-11-29 20:14:43,773 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 [2020-11-29 20:14:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-29 20:14:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-11-29 20:14:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 213 transitions. [2020-11-29 20:14:43,807 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 213 transitions. Word has length 59 [2020-11-29 20:14:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:43,808 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 213 transitions. [2020-11-29 20:14:43,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 213 transitions. [2020-11-29 20:14:43,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 20:14:43,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:43,816 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] [2020-11-29 20:14:43,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:14:43,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:43,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:43,817 INFO L82 PathProgramCache]: Analyzing trace with hash 434511736, now seen corresponding path program 1 times [2020-11-29 20:14:43,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:43,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647274905] [2020-11-29 20:14:43,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:43,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647274905] [2020-11-29 20:14:43,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:43,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:43,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841616706] [2020-11-29 20:14:43,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:43,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:43,933 INFO L87 Difference]: Start difference. First operand 141 states and 213 transitions. Second operand 4 states. [2020-11-29 20:14:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:44,473 INFO L93 Difference]: Finished difference Result 276 states and 416 transitions. [2020-11-29 20:14:44,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:44,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 20:14:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:44,476 INFO L225 Difference]: With dead ends: 276 [2020-11-29 20:14:44,476 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:14:44,476 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 [2020-11-29 20:14:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:14:44,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 20:14:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2020-11-29 20:14:44,487 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 59 [2020-11-29 20:14:44,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:44,488 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2020-11-29 20:14:44,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:44,489 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2020-11-29 20:14:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 20:14:44,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:44,491 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] [2020-11-29 20:14:44,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:14:44,492 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1020019103, now seen corresponding path program 1 times [2020-11-29 20:14:44,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:44,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475146745] [2020-11-29 20:14:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:44,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475146745] [2020-11-29 20:14:44,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:44,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:44,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240106595] [2020-11-29 20:14:44,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:44,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:44,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:44,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:44,617 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand 4 states. [2020-11-29 20:14:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:45,168 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-11-29 20:14:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:45,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-11-29 20:14:45,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:45,171 INFO L225 Difference]: With dead ends: 276 [2020-11-29 20:14:45,171 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:14:45,172 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 [2020-11-29 20:14:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:14:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 20:14:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions. [2020-11-29 20:14:45,201 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 59 [2020-11-29 20:14:45,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:45,201 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 211 transitions. [2020-11-29 20:14:45,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions. [2020-11-29 20:14:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 20:14:45,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:45,202 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] [2020-11-29 20:14:45,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:14:45,203 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:45,203 INFO L82 PathProgramCache]: Analyzing trace with hash 321491268, now seen corresponding path program 1 times [2020-11-29 20:14:45,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:45,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258777597] [2020-11-29 20:14:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:45,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258777597] [2020-11-29 20:14:45,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:45,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:45,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927040452] [2020-11-29 20:14:45,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:45,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:45,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:45,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:45,336 INFO L87 Difference]: Start difference. First operand 141 states and 211 transitions. Second operand 4 states. [2020-11-29 20:14:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:45,827 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2020-11-29 20:14:45,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:45,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-11-29 20:14:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:45,829 INFO L225 Difference]: With dead ends: 276 [2020-11-29 20:14:45,830 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:14:45,830 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 [2020-11-29 20:14:45,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:14:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 20:14:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2020-11-29 20:14:45,839 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 60 [2020-11-29 20:14:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:45,839 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2020-11-29 20:14:45,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2020-11-29 20:14:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-29 20:14:45,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:45,841 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] [2020-11-29 20:14:45,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:14:45,841 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1080156986, now seen corresponding path program 1 times [2020-11-29 20:14:45,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842249347] [2020-11-29 20:14:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:45,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842249347] [2020-11-29 20:14:45,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:45,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126758443] [2020-11-29 20:14:45,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:45,938 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand 4 states. [2020-11-29 20:14:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:46,459 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-11-29 20:14:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:46,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-11-29 20:14:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:46,462 INFO L225 Difference]: With dead ends: 276 [2020-11-29 20:14:46,462 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:14:46,463 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 [2020-11-29 20:14:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:14:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-11-29 20:14:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 209 transitions. [2020-11-29 20:14:46,471 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 209 transitions. Word has length 61 [2020-11-29 20:14:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:46,472 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 209 transitions. [2020-11-29 20:14:46,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 209 transitions. [2020-11-29 20:14:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 20:14:46,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:46,477 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] [2020-11-29 20:14:46,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:14:46,477 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:46,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1620376695, now seen corresponding path program 1 times [2020-11-29 20:14:46,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:46,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528613298] [2020-11-29 20:14:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:46,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528613298] [2020-11-29 20:14:46,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:46,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:46,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725342580] [2020-11-29 20:14:46,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:46,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:46,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:46,597 INFO L87 Difference]: Start difference. First operand 141 states and 209 transitions. Second operand 4 states. [2020-11-29 20:14:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:47,059 INFO L93 Difference]: Finished difference Result 266 states and 399 transitions. [2020-11-29 20:14:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:47,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 20:14:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:47,063 INFO L225 Difference]: With dead ends: 266 [2020-11-29 20:14:47,064 INFO L226 Difference]: Without dead ends: 144 [2020-11-29 20:14:47,064 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 [2020-11-29 20:14:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-29 20:14:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-11-29 20:14:47,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-29 20:14:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-11-29 20:14:47,072 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 62 [2020-11-29 20:14:47,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:47,072 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-11-29 20:14:47,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-11-29 20:14:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 20:14:47,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:47,079 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] [2020-11-29 20:14:47,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:14:47,079 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:47,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1220225295, now seen corresponding path program 1 times [2020-11-29 20:14:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822600529] [2020-11-29 20:14:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:47,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822600529] [2020-11-29 20:14:47,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:47,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:47,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242265726] [2020-11-29 20:14:47,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:47,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:47,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:47,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:47,235 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-11-29 20:14:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:47,733 INFO L93 Difference]: Finished difference Result 306 states and 460 transitions. [2020-11-29 20:14:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:47,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-11-29 20:14:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:47,736 INFO L225 Difference]: With dead ends: 306 [2020-11-29 20:14:47,736 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 20:14:47,736 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 [2020-11-29 20:14:47,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 20:14:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-11-29 20:14:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 246 transitions. [2020-11-29 20:14:47,744 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 246 transitions. Word has length 62 [2020-11-29 20:14:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:47,744 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 246 transitions. [2020-11-29 20:14:47,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 246 transitions. [2020-11-29 20:14:47,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 20:14:47,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:47,746 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] [2020-11-29 20:14:47,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:14:47,746 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1563120905, now seen corresponding path program 1 times [2020-11-29 20:14:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:47,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098591578] [2020-11-29 20:14:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:47,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098591578] [2020-11-29 20:14:47,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:47,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:47,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996301483] [2020-11-29 20:14:47,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:47,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:47,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:47,901 INFO L87 Difference]: Start difference. First operand 163 states and 246 transitions. Second operand 4 states. [2020-11-29 20:14:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:48,481 INFO L93 Difference]: Finished difference Result 328 states and 497 transitions. [2020-11-29 20:14:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:48,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-11-29 20:14:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:48,484 INFO L225 Difference]: With dead ends: 328 [2020-11-29 20:14:48,484 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 20:14:48,486 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 [2020-11-29 20:14:48,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 20:14:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-11-29 20:14:48,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-11-29 20:14:48,495 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 75 [2020-11-29 20:14:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:48,495 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-11-29 20:14:48,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-11-29 20:14:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 20:14:48,496 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:48,497 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] [2020-11-29 20:14:48,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:14:48,497 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1628563473, now seen corresponding path program 1 times [2020-11-29 20:14:48,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:48,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709903819] [2020-11-29 20:14:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:48,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709903819] [2020-11-29 20:14:48,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:48,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:48,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453173290] [2020-11-29 20:14:48,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:48,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:48,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:48,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:48,605 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 4 states. [2020-11-29 20:14:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:49,098 INFO L93 Difference]: Finished difference Result 327 states and 494 transitions. [2020-11-29 20:14:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:49,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 20:14:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:49,101 INFO L225 Difference]: With dead ends: 327 [2020-11-29 20:14:49,101 INFO L226 Difference]: Without dead ends: 183 [2020-11-29 20:14:49,102 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 [2020-11-29 20:14:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-29 20:14:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 163. [2020-11-29 20:14:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-11-29 20:14:49,109 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 76 [2020-11-29 20:14:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:49,110 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-11-29 20:14:49,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-11-29 20:14:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 20:14:49,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:49,112 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] [2020-11-29 20:14:49,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 20:14:49,112 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1323210372, now seen corresponding path program 1 times [2020-11-29 20:14:49,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:49,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17609922] [2020-11-29 20:14:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:49,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17609922] [2020-11-29 20:14:49,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:49,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:49,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016167019] [2020-11-29 20:14:49,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:49,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:49,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:49,206 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 4 states. [2020-11-29 20:14:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:49,714 INFO L93 Difference]: Finished difference Result 325 states and 490 transitions. [2020-11-29 20:14:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:49,715 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 20:14:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:49,717 INFO L225 Difference]: With dead ends: 325 [2020-11-29 20:14:49,718 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 20:14:49,719 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 [2020-11-29 20:14:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 20:14:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-11-29 20:14:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-11-29 20:14:49,730 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 76 [2020-11-29 20:14:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:49,732 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-11-29 20:14:49,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-11-29 20:14:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 20:14:49,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:49,734 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] [2020-11-29 20:14:49,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 20:14:49,735 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash -373862212, now seen corresponding path program 1 times [2020-11-29 20:14:49,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:49,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550009233] [2020-11-29 20:14:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:49,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550009233] [2020-11-29 20:14:49,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:49,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:49,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324721335] [2020-11-29 20:14:49,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:49,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:49,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:49,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:49,832 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 4 states. [2020-11-29 20:14:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:50,320 INFO L93 Difference]: Finished difference Result 324 states and 487 transitions. [2020-11-29 20:14:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:50,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 20:14:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:50,322 INFO L225 Difference]: With dead ends: 324 [2020-11-29 20:14:50,322 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 20:14:50,323 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 [2020-11-29 20:14:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 20:14:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-11-29 20:14:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-11-29 20:14:50,331 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 76 [2020-11-29 20:14:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:50,332 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-11-29 20:14:50,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-11-29 20:14:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 20:14:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:50,334 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] [2020-11-29 20:14:50,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 20:14:50,334 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1828393051, now seen corresponding path program 1 times [2020-11-29 20:14:50,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:50,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976527803] [2020-11-29 20:14:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:50,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976527803] [2020-11-29 20:14:50,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:50,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:50,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520715411] [2020-11-29 20:14:50,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:50,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:50,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:50,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:50,410 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 4 states. [2020-11-29 20:14:50,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:50,917 INFO L93 Difference]: Finished difference Result 324 states and 485 transitions. [2020-11-29 20:14:50,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:50,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-11-29 20:14:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:50,920 INFO L225 Difference]: With dead ends: 324 [2020-11-29 20:14:50,920 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 20:14:50,921 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 [2020-11-29 20:14:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 20:14:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-11-29 20:14:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2020-11-29 20:14:50,933 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 76 [2020-11-29 20:14:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:50,934 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2020-11-29 20:14:50,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2020-11-29 20:14:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 20:14:50,935 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:50,935 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] [2020-11-29 20:14:50,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 20:14:50,936 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:50,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1031702656, now seen corresponding path program 1 times [2020-11-29 20:14:50,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:50,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548687579] [2020-11-29 20:14:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:51,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548687579] [2020-11-29 20:14:51,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:51,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:51,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087512892] [2020-11-29 20:14:51,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:51,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:51,021 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand 4 states. [2020-11-29 20:14:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:51,503 INFO L93 Difference]: Finished difference Result 324 states and 483 transitions. [2020-11-29 20:14:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:51,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-11-29 20:14:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:51,506 INFO L225 Difference]: With dead ends: 324 [2020-11-29 20:14:51,506 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 20:14:51,507 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 [2020-11-29 20:14:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 20:14:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-11-29 20:14:51,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2020-11-29 20:14:51,517 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 77 [2020-11-29 20:14:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:51,517 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2020-11-29 20:14:51,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2020-11-29 20:14:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-29 20:14:51,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:51,519 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] [2020-11-29 20:14:51,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 20:14:51,519 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:51,520 INFO L82 PathProgramCache]: Analyzing trace with hash -538440438, now seen corresponding path program 1 times [2020-11-29 20:14:51,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:51,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139137210] [2020-11-29 20:14:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:51,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139137210] [2020-11-29 20:14:51,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:51,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:51,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120426815] [2020-11-29 20:14:51,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:51,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:51,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:51,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:51,597 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand 4 states. [2020-11-29 20:14:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:52,006 INFO L93 Difference]: Finished difference Result 324 states and 481 transitions. [2020-11-29 20:14:52,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:52,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-29 20:14:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:52,008 INFO L225 Difference]: With dead ends: 324 [2020-11-29 20:14:52,009 INFO L226 Difference]: Without dead ends: 180 [2020-11-29 20:14:52,009 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 [2020-11-29 20:14:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-29 20:14:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 163. [2020-11-29 20:14:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2020-11-29 20:14:52,016 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 78 [2020-11-29 20:14:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:52,017 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2020-11-29 20:14:52,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2020-11-29 20:14:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 20:14:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:52,018 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] [2020-11-29 20:14:52,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 20:14:52,019 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:52,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2007032891, now seen corresponding path program 1 times [2020-11-29 20:14:52,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:52,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394569557] [2020-11-29 20:14:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:14:52,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394569557] [2020-11-29 20:14:52,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:52,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:52,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599615590] [2020-11-29 20:14:52,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:52,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:52,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:52,112 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand 4 states. [2020-11-29 20:14:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:52,541 INFO L93 Difference]: Finished difference Result 314 states and 466 transitions. [2020-11-29 20:14:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:52,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-11-29 20:14:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:52,543 INFO L225 Difference]: With dead ends: 314 [2020-11-29 20:14:52,543 INFO L226 Difference]: Without dead ends: 170 [2020-11-29 20:14:52,544 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 [2020-11-29 20:14:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-29 20:14:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2020-11-29 20:14:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:14:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2020-11-29 20:14:52,551 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 79 [2020-11-29 20:14:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:52,551 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2020-11-29 20:14:52,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2020-11-29 20:14:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 20:14:52,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:52,553 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] [2020-11-29 20:14:52,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 20:14:52,553 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1409260885, now seen corresponding path program 1 times [2020-11-29 20:14:52,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:52,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243351562] [2020-11-29 20:14:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:52,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243351562] [2020-11-29 20:14:52,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:52,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:52,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337105793] [2020-11-29 20:14:52,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:52,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:52,661 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 4 states. [2020-11-29 20:14:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:53,386 INFO L93 Difference]: Finished difference Result 403 states and 603 transitions. [2020-11-29 20:14:53,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:53,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 20:14:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:53,389 INFO L225 Difference]: With dead ends: 403 [2020-11-29 20:14:53,389 INFO L226 Difference]: Without dead ends: 259 [2020-11-29 20:14:53,390 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 [2020-11-29 20:14:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-11-29 20:14:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 206. [2020-11-29 20:14:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-11-29 20:14:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 316 transitions. [2020-11-29 20:14:53,397 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 316 transitions. Word has length 84 [2020-11-29 20:14:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:53,398 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 316 transitions. [2020-11-29 20:14:53,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 316 transitions. [2020-11-29 20:14:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-29 20:14:53,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:53,400 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] [2020-11-29 20:14:53,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 20:14:53,400 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1988313133, now seen corresponding path program 1 times [2020-11-29 20:14:53,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:53,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469041972] [2020-11-29 20:14:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:53,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469041972] [2020-11-29 20:14:53,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:53,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:53,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307410632] [2020-11-29 20:14:53,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:53,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:53,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:53,491 INFO L87 Difference]: Start difference. First operand 206 states and 316 transitions. Second operand 4 states. [2020-11-29 20:14:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:54,083 INFO L93 Difference]: Finished difference Result 442 states and 685 transitions. [2020-11-29 20:14:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:54,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-11-29 20:14:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:54,087 INFO L225 Difference]: With dead ends: 442 [2020-11-29 20:14:54,087 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 20:14:54,088 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 [2020-11-29 20:14:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 20:14:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-11-29 20:14:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 358 transitions. [2020-11-29 20:14:54,098 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 358 transitions. Word has length 84 [2020-11-29 20:14:54,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:54,098 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 358 transitions. [2020-11-29 20:14:54,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 358 transitions. [2020-11-29 20:14:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 20:14:54,100 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:54,100 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] [2020-11-29 20:14:54,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 20:14:54,100 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:54,101 INFO L82 PathProgramCache]: Analyzing trace with hash -40403587, now seen corresponding path program 1 times [2020-11-29 20:14:54,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:54,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122059469] [2020-11-29 20:14:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:54,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122059469] [2020-11-29 20:14:54,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:54,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:54,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434126742] [2020-11-29 20:14:54,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:54,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:54,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:54,184 INFO L87 Difference]: Start difference. First operand 230 states and 358 transitions. Second operand 4 states. [2020-11-29 20:14:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:54,960 INFO L93 Difference]: Finished difference Result 494 states and 764 transitions. [2020-11-29 20:14:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:54,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 20:14:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:54,964 INFO L225 Difference]: With dead ends: 494 [2020-11-29 20:14:54,964 INFO L226 Difference]: Without dead ends: 283 [2020-11-29 20:14:54,965 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 [2020-11-29 20:14:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-11-29 20:14:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 230. [2020-11-29 20:14:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 357 transitions. [2020-11-29 20:14:54,976 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 357 transitions. Word has length 97 [2020-11-29 20:14:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:54,976 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 357 transitions. [2020-11-29 20:14:54,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 357 transitions. [2020-11-29 20:14:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 20:14:54,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:54,979 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] [2020-11-29 20:14:54,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 20:14:54,979 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:54,980 INFO L82 PathProgramCache]: Analyzing trace with hash 271163, now seen corresponding path program 1 times [2020-11-29 20:14:54,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:54,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632830181] [2020-11-29 20:14:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:55,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632830181] [2020-11-29 20:14:55,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:55,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:55,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635179040] [2020-11-29 20:14:55,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:55,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:55,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:55,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:55,071 INFO L87 Difference]: Start difference. First operand 230 states and 357 transitions. Second operand 4 states. [2020-11-29 20:14:55,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:55,633 INFO L93 Difference]: Finished difference Result 466 states and 724 transitions. [2020-11-29 20:14:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:55,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-11-29 20:14:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:55,636 INFO L225 Difference]: With dead ends: 466 [2020-11-29 20:14:55,636 INFO L226 Difference]: Without dead ends: 255 [2020-11-29 20:14:55,637 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 [2020-11-29 20:14:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-11-29 20:14:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 230. [2020-11-29 20:14:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2020-11-29 20:14:55,646 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 97 [2020-11-29 20:14:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:55,646 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2020-11-29 20:14:55,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2020-11-29 20:14:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:55,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:55,648 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] [2020-11-29 20:14:55,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 20:14:55,649 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:55,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1588160075, now seen corresponding path program 1 times [2020-11-29 20:14:55,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:55,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148769381] [2020-11-29 20:14:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:55,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148769381] [2020-11-29 20:14:55,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:55,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:55,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202220050] [2020-11-29 20:14:55,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:55,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:55,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:55,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:55,731 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand 4 states. [2020-11-29 20:14:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:56,364 INFO L93 Difference]: Finished difference Result 493 states and 759 transitions. [2020-11-29 20:14:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:56,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:14:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:56,367 INFO L225 Difference]: With dead ends: 493 [2020-11-29 20:14:56,367 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 20:14:56,368 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 [2020-11-29 20:14:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 20:14:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 230. [2020-11-29 20:14:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2020-11-29 20:14:56,378 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 98 [2020-11-29 20:14:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:56,378 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2020-11-29 20:14:56,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2020-11-29 20:14:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:56,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:56,380 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] [2020-11-29 20:14:56,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 20:14:56,381 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:56,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1363613770, now seen corresponding path program 1 times [2020-11-29 20:14:56,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:56,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512684275] [2020-11-29 20:14:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:56,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512684275] [2020-11-29 20:14:56,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:56,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:56,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980758009] [2020-11-29 20:14:56,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:56,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:56,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:56,483 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand 4 states. [2020-11-29 20:14:57,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:57,095 INFO L93 Difference]: Finished difference Result 491 states and 755 transitions. [2020-11-29 20:14:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:57,095 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:14:57,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:57,097 INFO L225 Difference]: With dead ends: 491 [2020-11-29 20:14:57,098 INFO L226 Difference]: Without dead ends: 280 [2020-11-29 20:14:57,098 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 [2020-11-29 20:14:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-29 20:14:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 230. [2020-11-29 20:14:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 354 transitions. [2020-11-29 20:14:57,107 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 354 transitions. Word has length 98 [2020-11-29 20:14:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:57,108 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 354 transitions. [2020-11-29 20:14:57,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 354 transitions. [2020-11-29 20:14:57,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:57,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:57,110 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] [2020-11-29 20:14:57,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 20:14:57,110 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:57,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:57,111 INFO L82 PathProgramCache]: Analyzing trace with hash -414265610, now seen corresponding path program 1 times [2020-11-29 20:14:57,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:57,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036753103] [2020-11-29 20:14:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:57,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036753103] [2020-11-29 20:14:57,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:57,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:57,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102415557] [2020-11-29 20:14:57,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:57,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:57,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:57,195 INFO L87 Difference]: Start difference. First operand 230 states and 354 transitions. Second operand 4 states. [2020-11-29 20:14:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:57,775 INFO L93 Difference]: Finished difference Result 490 states and 752 transitions. [2020-11-29 20:14:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:57,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:14:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:57,777 INFO L225 Difference]: With dead ends: 490 [2020-11-29 20:14:57,777 INFO L226 Difference]: Without dead ends: 279 [2020-11-29 20:14:57,778 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 [2020-11-29 20:14:57,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-11-29 20:14:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 230. [2020-11-29 20:14:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-29 20:14:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 353 transitions. [2020-11-29 20:14:57,789 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 353 transitions. Word has length 98 [2020-11-29 20:14:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:57,790 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 353 transitions. [2020-11-29 20:14:57,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 353 transitions. [2020-11-29 20:14:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:57,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:57,792 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] [2020-11-29 20:14:57,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 20:14:57,792 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1868796449, now seen corresponding path program 1 times [2020-11-29 20:14:57,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:57,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507397967] [2020-11-29 20:14:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-29 20:14:57,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507397967] [2020-11-29 20:14:57,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:57,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:14:57,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833083052] [2020-11-29 20:14:57,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:14:57,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:57,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:14:57,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:14:57,895 INFO L87 Difference]: Start difference. First operand 230 states and 353 transitions. Second operand 5 states. [2020-11-29 20:14:58,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:58,493 INFO L93 Difference]: Finished difference Result 462 states and 714 transitions. [2020-11-29 20:14:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:14:58,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-11-29 20:14:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:58,496 INFO L225 Difference]: With dead ends: 462 [2020-11-29 20:14:58,496 INFO L226 Difference]: Without dead ends: 251 [2020-11-29 20:14:58,496 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 [2020-11-29 20:14:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-29 20:14:58,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2020-11-29 20:14:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:14:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 379 transitions. [2020-11-29 20:14:58,505 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 379 transitions. Word has length 98 [2020-11-29 20:14:58,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:58,506 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 379 transitions. [2020-11-29 20:14:58,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:14:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 379 transitions. [2020-11-29 20:14:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:58,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:58,508 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] [2020-11-29 20:14:58,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 20:14:58,509 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash -102696520, now seen corresponding path program 1 times [2020-11-29 20:14:58,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:58,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575186041] [2020-11-29 20:14:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:58,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575186041] [2020-11-29 20:14:58,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:58,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:58,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70565275] [2020-11-29 20:14:58,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:58,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:58,627 INFO L87 Difference]: Start difference. First operand 250 states and 379 transitions. Second operand 4 states. [2020-11-29 20:14:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:59,054 INFO L93 Difference]: Finished difference Result 503 states and 764 transitions. [2020-11-29 20:14:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:59,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:14:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:59,057 INFO L225 Difference]: With dead ends: 503 [2020-11-29 20:14:59,057 INFO L226 Difference]: Without dead ends: 272 [2020-11-29 20:14:59,058 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 [2020-11-29 20:14:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-29 20:14:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-11-29 20:14:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:14:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-11-29 20:14:59,067 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 98 [2020-11-29 20:14:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:59,068 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-11-29 20:14:59,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-11-29 20:14:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 20:14:59,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:59,070 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] [2020-11-29 20:14:59,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 20:14:59,071 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:59,071 INFO L82 PathProgramCache]: Analyzing trace with hash 846651640, now seen corresponding path program 1 times [2020-11-29 20:14:59,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:59,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390992876] [2020-11-29 20:14:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:59,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390992876] [2020-11-29 20:14:59,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:59,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382296914] [2020-11-29 20:14:59,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:59,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:59,158 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 4 states. [2020-11-29 20:14:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:14:59,586 INFO L93 Difference]: Finished difference Result 502 states and 761 transitions. [2020-11-29 20:14:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:14:59,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-29 20:14:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:14:59,588 INFO L225 Difference]: With dead ends: 502 [2020-11-29 20:14:59,588 INFO L226 Difference]: Without dead ends: 271 [2020-11-29 20:14:59,589 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 [2020-11-29 20:14:59,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-29 20:14:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-11-29 20:14:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:14:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 377 transitions. [2020-11-29 20:14:59,599 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 377 transitions. Word has length 98 [2020-11-29 20:14:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:14:59,599 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 377 transitions. [2020-11-29 20:14:59,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:14:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 377 transitions. [2020-11-29 20:14:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 20:14:59,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:14:59,601 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] [2020-11-29 20:14:59,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 20:14:59,602 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:14:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:14:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash 651492985, now seen corresponding path program 1 times [2020-11-29 20:14:59,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:14:59,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733287385] [2020-11-29 20:14:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:14:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:14:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:14:59,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733287385] [2020-11-29 20:14:59,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:14:59,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:14:59,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754102544] [2020-11-29 20:14:59,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:14:59,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:14:59,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:14:59,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:14:59,699 INFO L87 Difference]: Start difference. First operand 250 states and 377 transitions. Second operand 4 states. [2020-11-29 20:15:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:00,352 INFO L93 Difference]: Finished difference Result 530 states and 797 transitions. [2020-11-29 20:15:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:00,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-11-29 20:15:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:00,355 INFO L225 Difference]: With dead ends: 530 [2020-11-29 20:15:00,355 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 20:15:00,356 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 [2020-11-29 20:15:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 20:15:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 20:15:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 376 transitions. [2020-11-29 20:15:00,367 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 376 transitions. Word has length 99 [2020-11-29 20:15:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:00,367 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 376 transitions. [2020-11-29 20:15:00,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 376 transitions. [2020-11-29 20:15:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 20:15:00,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:00,370 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] [2020-11-29 20:15:00,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 20:15:00,370 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1085222071, now seen corresponding path program 1 times [2020-11-29 20:15:00,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:00,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289668622] [2020-11-29 20:15:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:00,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289668622] [2020-11-29 20:15:00,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:00,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:00,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061016282] [2020-11-29 20:15:00,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:00,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:00,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:00,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:00,466 INFO L87 Difference]: Start difference. First operand 250 states and 376 transitions. Second operand 4 states. [2020-11-29 20:15:00,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:00,888 INFO L93 Difference]: Finished difference Result 502 states and 757 transitions. [2020-11-29 20:15:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:00,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-11-29 20:15:00,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:00,890 INFO L225 Difference]: With dead ends: 502 [2020-11-29 20:15:00,890 INFO L226 Difference]: Without dead ends: 271 [2020-11-29 20:15:00,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:15:00,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-29 20:15:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-11-29 20:15:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2020-11-29 20:15:00,900 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 99 [2020-11-29 20:15:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:00,901 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2020-11-29 20:15:00,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2020-11-29 20:15:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 20:15:00,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:00,903 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] [2020-11-29 20:15:00,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 20:15:00,903 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:00,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:00,904 INFO L82 PathProgramCache]: Analyzing trace with hash 199692210, now seen corresponding path program 1 times [2020-11-29 20:15:00,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:00,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402538350] [2020-11-29 20:15:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:00,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402538350] [2020-11-29 20:15:01,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:01,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:01,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842193558] [2020-11-29 20:15:01,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:01,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:01,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:01,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:01,002 INFO L87 Difference]: Start difference. First operand 250 states and 375 transitions. Second operand 4 states. [2020-11-29 20:15:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:01,489 INFO L93 Difference]: Finished difference Result 530 states and 793 transitions. [2020-11-29 20:15:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:01,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 20:15:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:01,491 INFO L225 Difference]: With dead ends: 530 [2020-11-29 20:15:01,491 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 20:15:01,492 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 [2020-11-29 20:15:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 20:15:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 20:15:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2020-11-29 20:15:01,502 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 100 [2020-11-29 20:15:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:01,502 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2020-11-29 20:15:01,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2020-11-29 20:15:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 20:15:01,503 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:01,503 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] [2020-11-29 20:15:01,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 20:15:01,504 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash 760391988, now seen corresponding path program 1 times [2020-11-29 20:15:01,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:01,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796751140] [2020-11-29 20:15:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:01,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796751140] [2020-11-29 20:15:01,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:01,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:01,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82962227] [2020-11-29 20:15:01,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:01,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:01,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:01,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:01,719 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand 4 states. [2020-11-29 20:15:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:02,081 INFO L93 Difference]: Finished difference Result 502 states and 753 transitions. [2020-11-29 20:15:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:02,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-11-29 20:15:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:02,083 INFO L225 Difference]: With dead ends: 502 [2020-11-29 20:15:02,083 INFO L226 Difference]: Without dead ends: 271 [2020-11-29 20:15:02,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:15:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-29 20:15:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-11-29 20:15:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2020-11-29 20:15:02,093 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 100 [2020-11-29 20:15:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:02,093 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2020-11-29 20:15:02,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2020-11-29 20:15:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 20:15:02,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:02,095 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] [2020-11-29 20:15:02,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 20:15:02,096 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2123930572, now seen corresponding path program 1 times [2020-11-29 20:15:02,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:02,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823121640] [2020-11-29 20:15:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:02,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823121640] [2020-11-29 20:15:02,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:02,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:02,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155187956] [2020-11-29 20:15:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:02,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:02,197 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand 4 states. [2020-11-29 20:15:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:02,883 INFO L93 Difference]: Finished difference Result 530 states and 789 transitions. [2020-11-29 20:15:02,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:02,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 20:15:02,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:02,886 INFO L225 Difference]: With dead ends: 530 [2020-11-29 20:15:02,886 INFO L226 Difference]: Without dead ends: 299 [2020-11-29 20:15:02,887 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 [2020-11-29 20:15:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-11-29 20:15:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-11-29 20:15:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 372 transitions. [2020-11-29 20:15:02,897 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 372 transitions. Word has length 101 [2020-11-29 20:15:02,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:02,898 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 372 transitions. [2020-11-29 20:15:02,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 372 transitions. [2020-11-29 20:15:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-29 20:15:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:02,900 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] [2020-11-29 20:15:02,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 20:15:02,900 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1922106638, now seen corresponding path program 1 times [2020-11-29 20:15:02,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:02,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981379529] [2020-11-29 20:15:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:02,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981379529] [2020-11-29 20:15:02,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:02,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:02,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870248885] [2020-11-29 20:15:02,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:02,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:02,981 INFO L87 Difference]: Start difference. First operand 250 states and 372 transitions. Second operand 4 states. [2020-11-29 20:15:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:03,490 INFO L93 Difference]: Finished difference Result 502 states and 749 transitions. [2020-11-29 20:15:03,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:03,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-11-29 20:15:03,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:03,493 INFO L225 Difference]: With dead ends: 502 [2020-11-29 20:15:03,493 INFO L226 Difference]: Without dead ends: 271 [2020-11-29 20:15:03,494 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 [2020-11-29 20:15:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-11-29 20:15:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 250. [2020-11-29 20:15:03,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 371 transitions. [2020-11-29 20:15:03,504 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 371 transitions. Word has length 101 [2020-11-29 20:15:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:03,504 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 371 transitions. [2020-11-29 20:15:03,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 371 transitions. [2020-11-29 20:15:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 20:15:03,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:03,506 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] [2020-11-29 20:15:03,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 20:15:03,507 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1950473869, now seen corresponding path program 1 times [2020-11-29 20:15:03,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:03,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462640980] [2020-11-29 20:15:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:03,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462640980] [2020-11-29 20:15:03,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:03,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:03,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023742769] [2020-11-29 20:15:03,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:03,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:03,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:03,602 INFO L87 Difference]: Start difference. First operand 250 states and 371 transitions. Second operand 4 states. [2020-11-29 20:15:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:04,285 INFO L93 Difference]: Finished difference Result 520 states and 773 transitions. [2020-11-29 20:15:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:04,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 20:15:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:04,288 INFO L225 Difference]: With dead ends: 520 [2020-11-29 20:15:04,288 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 20:15:04,289 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 [2020-11-29 20:15:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 20:15:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-11-29 20:15:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 370 transitions. [2020-11-29 20:15:04,299 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 370 transitions. Word has length 102 [2020-11-29 20:15:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:04,300 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 370 transitions. [2020-11-29 20:15:04,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 370 transitions. [2020-11-29 20:15:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 20:15:04,301 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:04,301 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] [2020-11-29 20:15:04,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-29 20:15:04,304 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:04,305 INFO L82 PathProgramCache]: Analyzing trace with hash -382918769, now seen corresponding path program 1 times [2020-11-29 20:15:04,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:04,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753744869] [2020-11-29 20:15:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:04,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753744869] [2020-11-29 20:15:04,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:04,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:04,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127162684] [2020-11-29 20:15:04,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:04,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:04,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:04,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:04,390 INFO L87 Difference]: Start difference. First operand 250 states and 370 transitions. Second operand 4 states. [2020-11-29 20:15:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:04,761 INFO L93 Difference]: Finished difference Result 492 states and 733 transitions. [2020-11-29 20:15:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:04,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-29 20:15:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:04,780 INFO L225 Difference]: With dead ends: 492 [2020-11-29 20:15:04,780 INFO L226 Difference]: Without dead ends: 261 [2020-11-29 20:15:04,780 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 [2020-11-29 20:15:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-11-29 20:15:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 250. [2020-11-29 20:15:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2020-11-29 20:15:04,800 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 102 [2020-11-29 20:15:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:04,801 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2020-11-29 20:15:04,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2020-11-29 20:15:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 20:15:04,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:04,803 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] [2020-11-29 20:15:04,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-29 20:15:04,803 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash -2022470311, now seen corresponding path program 1 times [2020-11-29 20:15:04,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122697349] [2020-11-29 20:15:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:15:04,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122697349] [2020-11-29 20:15:04,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:04,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:15:04,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924081316] [2020-11-29 20:15:04,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:04,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:04,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:04,930 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 4 states. [2020-11-29 20:15:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:05,457 INFO L93 Difference]: Finished difference Result 520 states and 769 transitions. [2020-11-29 20:15:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:05,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-11-29 20:15:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:05,459 INFO L225 Difference]: With dead ends: 520 [2020-11-29 20:15:05,459 INFO L226 Difference]: Without dead ends: 289 [2020-11-29 20:15:05,460 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 [2020-11-29 20:15:05,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-11-29 20:15:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-11-29 20:15:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-29 20:15:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2020-11-29 20:15:05,471 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 106 [2020-11-29 20:15:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:05,471 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2020-11-29 20:15:05,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2020-11-29 20:15:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 20:15:05,473 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:05,473 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] [2020-11-29 20:15:05,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-29 20:15:05,473 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:05,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:05,474 INFO L82 PathProgramCache]: Analyzing trace with hash 586317147, now seen corresponding path program 1 times [2020-11-29 20:15:05,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:05,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45723297] [2020-11-29 20:15:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-29 20:15:05,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45723297] [2020-11-29 20:15:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:05,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:05,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283212750] [2020-11-29 20:15:05,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:15:05,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:05,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:05,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:05,561 INFO L87 Difference]: Start difference. First operand 250 states and 368 transitions. Second operand 3 states. [2020-11-29 20:15:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:05,649 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2020-11-29 20:15:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:05,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 20:15:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:05,653 INFO L225 Difference]: With dead ends: 708 [2020-11-29 20:15:05,653 INFO L226 Difference]: Without dead ends: 477 [2020-11-29 20:15:05,654 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 [2020-11-29 20:15:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-11-29 20:15:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2020-11-29 20:15:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-11-29 20:15:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 706 transitions. [2020-11-29 20:15:05,674 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 706 transitions. Word has length 106 [2020-11-29 20:15:05,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:05,675 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 706 transitions. [2020-11-29 20:15:05,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:15:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 706 transitions. [2020-11-29 20:15:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 20:15:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:05,677 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] [2020-11-29 20:15:05,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-29 20:15:05,678 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:05,678 INFO L82 PathProgramCache]: Analyzing trace with hash -629836579, now seen corresponding path program 1 times [2020-11-29 20:15:05,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:05,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499900937] [2020-11-29 20:15:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 20:15:05,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499900937] [2020-11-29 20:15:05,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:05,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:05,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340477051] [2020-11-29 20:15:05,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:15:05,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:05,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:05,741 INFO L87 Difference]: Start difference. First operand 477 states and 706 transitions. Second operand 3 states. [2020-11-29 20:15:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:05,799 INFO L93 Difference]: Finished difference Result 962 states and 1427 transitions. [2020-11-29 20:15:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:05,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 20:15:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:05,803 INFO L225 Difference]: With dead ends: 962 [2020-11-29 20:15:05,803 INFO L226 Difference]: Without dead ends: 504 [2020-11-29 20:15:05,805 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 [2020-11-29 20:15:05,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-29 20:15:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-29 20:15:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-29 20:15:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 741 transitions. [2020-11-29 20:15:05,824 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 741 transitions. Word has length 106 [2020-11-29 20:15:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:05,825 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 741 transitions. [2020-11-29 20:15:05,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:15:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 741 transitions. [2020-11-29 20:15:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-11-29 20:15:05,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:05,827 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] [2020-11-29 20:15:05,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-29 20:15:05,828 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:05,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1216112801, now seen corresponding path program 1 times [2020-11-29 20:15:05,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:05,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248012672] [2020-11-29 20:15:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:05,906 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-11-29 20:15:05,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248012672] [2020-11-29 20:15:05,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:05,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:15:05,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26082747] [2020-11-29 20:15:05,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:15:05,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:15:05,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:15:05,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:15:05,909 INFO L87 Difference]: Start difference. First operand 504 states and 741 transitions. Second operand 3 states. [2020-11-29 20:15:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:05,949 INFO L93 Difference]: Finished difference Result 991 states and 1463 transitions. [2020-11-29 20:15:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:15:05,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-11-29 20:15:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:05,953 INFO L225 Difference]: With dead ends: 991 [2020-11-29 20:15:05,954 INFO L226 Difference]: Without dead ends: 506 [2020-11-29 20:15:05,955 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 [2020-11-29 20:15:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-11-29 20:15:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-11-29 20:15:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-11-29 20:15:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 743 transitions. [2020-11-29 20:15:05,978 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 743 transitions. Word has length 106 [2020-11-29 20:15:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:05,978 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 743 transitions. [2020-11-29 20:15:05,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:15:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 743 transitions. [2020-11-29 20:15:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 20:15:05,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:05,981 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] [2020-11-29 20:15:05,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-29 20:15:05,982 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:05,982 INFO L82 PathProgramCache]: Analyzing trace with hash -536013004, now seen corresponding path program 1 times [2020-11-29 20:15:05,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:15:05,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211040557] [2020-11-29 20:15:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:15:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:06,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:06,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:06,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:15:06,406 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:15:06,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-29 20:15:06,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:15:06 BoogieIcfgContainer [2020-11-29 20:15:06,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:15:06,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:15:06,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:15:06,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:15:06,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:14:39" (3/4) ... [2020-11-29 20:15:06,596 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:15:06,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:15:06,598 INFO L168 Benchmark]: Toolchain (without parser) took 30245.06 ms. Allocated memory was 81.8 MB in the beginning and 293.6 MB in the end (delta: 211.8 MB). Free memory was 47.7 MB in the beginning and 182.4 MB in the end (delta: -134.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,599 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:15:06,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1016.53 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 62.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.17 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 58.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,600 INFO L168 Benchmark]: Boogie Preprocessor took 173.27 ms. Allocated memory is still 102.8 MB. Free memory was 58.0 MB in the beginning and 51.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,601 INFO L168 Benchmark]: RCFGBuilder took 1791.45 ms. Allocated memory is still 102.8 MB. Free memory was 51.2 MB in the beginning and 68.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,601 INFO L168 Benchmark]: TraceAbstraction took 27119.67 ms. Allocated memory was 102.8 MB in the beginning and 293.6 MB in the end (delta: 190.8 MB). Free memory was 68.0 MB in the beginning and 182.4 MB in the end (delta: -114.4 MB). Peak memory consumption was 76.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:06,602 INFO L168 Benchmark]: Witness Printer took 6.20 ms. Allocated memory is still 293.6 MB. Free memory is still 182.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:15:06,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 81.8 MB. Free memory was 55.2 MB in the beginning and 55.2 MB in the end (delta: 30.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1016.53 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 47.6 MB in the beginning and 62.2 MB in the end (delta: -14.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 123.17 ms. Allocated memory is still 102.8 MB. Free memory was 62.2 MB in the beginning and 58.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 173.27 ms. Allocated memory is still 102.8 MB. Free memory was 58.0 MB in the beginning and 51.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1791.45 ms. Allocated memory is still 102.8 MB. Free memory was 51.2 MB in the beginning and 68.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27119.67 ms. Allocated memory was 102.8 MB in the beginning and 293.6 MB in the end (delta: 190.8 MB). Free memory was 68.0 MB in the beginning and 182.4 MB in the end (delta: -114.4 MB). Peak memory consumption was 76.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.20 ms. Allocated memory is still 293.6 MB. Free memory is still 182.4 MB. There was no memory consumed. Max. memory is 16.1 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: 26.8s, OverallIterations: 41, TraceHistogramMax: 4, AutomataDifference: 20.8s, 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, 15.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s 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: 0.5s AutomataMinimizationTime, 40 MinimizatonAttempts, 924 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.5s 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 0.2.0-a4ecdab [2020-11-29 20:15:09,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:15:09,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:15:09,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:15:09,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:15:09,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:15:09,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:15:09,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:15:09,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:15:09,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:15:09,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:15:09,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:15:09,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:15:09,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:15:09,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:15:09,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:15:09,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:15:09,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:15:09,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:15:09,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:15:09,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:15:09,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:15:09,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:15:09,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:15:09,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:15:09,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:15:09,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:15:09,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:15:09,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:15:09,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:15:09,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:15:09,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:15:09,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:15:09,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:15:09,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:15:09,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:15:09,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:15:09,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:15:09,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:15:09,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:15:09,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:15:09,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:15:09,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:15:09,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:15:09,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:15:09,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:15:09,982 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:15:09,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:15:09,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:15:09,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:15:09,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:15:09,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:15:09,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:15:09,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:15:09,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:15:09,986 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:15:09,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:15:09,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:15:09,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:15:09,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:15:09,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:15:09,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:15:09,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:15:09,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:15:09,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:15:09,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:15:09,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:15:09,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:15:09,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:15:09,991 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:15:09,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:15:09,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:15:09,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:15:09,992 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa6118479ea6bc4aae2360064ac2f184cd09048a [2020-11-29 20:15:10,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:15:10,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:15:10,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:15:10,594 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:15:10,595 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:15:10,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-11-29 20:15:10,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/47f278341/dae49d7806f44555845e87df2f8b0fc4/FLAG601acba17 [2020-11-29 20:15:11,592 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:15:11,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2020-11-29 20:15:11,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/47f278341/dae49d7806f44555845e87df2f8b0fc4/FLAG601acba17 [2020-11-29 20:15:11,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/data/47f278341/dae49d7806f44555845e87df2f8b0fc4 [2020-11-29 20:15:11,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:15:11,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:15:11,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:11,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:15:11,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:15:11,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:11" (1/1) ... [2020-11-29 20:15:11,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab4c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:11, skipping insertion in model container [2020-11-29 20:15:11,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:15:11" (1/1) ... [2020-11-29 20:15:11,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:15:11,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:15:12,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:12,519 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:15:12,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:15:12,702 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:15:12,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12 WrapperNode [2020-11-29 20:15:12,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:15:12,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:12,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:15:12,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:15:12,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:15:12,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:15:12,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:15:12,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:15:12,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... [2020-11-29 20:15:12,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:15:12,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:15:12,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:15:12,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:15:12,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/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 [2020-11-29 20:15:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:15:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:15:13,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:15:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 20:15:13,415 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 20:15:17,066 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-11-29 20:15:17,066 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-11-29 20:15:17,087 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:15:17,087 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:15:17,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:17 BoogieIcfgContainer [2020-11-29 20:15:17,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:15:17,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:15:17,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:15:17,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:15:17,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:15:11" (1/3) ... [2020-11-29 20:15:17,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff072a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:15:17, skipping insertion in model container [2020-11-29 20:15:17,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:15:12" (2/3) ... [2020-11-29 20:15:17,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bff072a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:15:17, skipping insertion in model container [2020-11-29 20:15:17,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:17" (3/3) ... [2020-11-29 20:15:17,108 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2020-11-29 20:15:17,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:15:17,127 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:15:17,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:15:17,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:15:17,191 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:15:17,191 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:15:17,197 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:15:17,198 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:15:17,198 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:15:17,198 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:15:17,198 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:15:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-11-29 20:15:17,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:15:17,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:17,239 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] [2020-11-29 20:15:17,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:17,247 INFO L82 PathProgramCache]: Analyzing trace with hash 522837677, now seen corresponding path program 1 times [2020-11-29 20:15:17,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:15:17,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873791730] [2020-11-29 20:15:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/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 [2020-11-29 20:15:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:17,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:15:17,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:17,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:15:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:17,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873791730] [2020-11-29 20:15:17,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:17,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 20:15:17,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519031194] [2020-11-29 20:15:17,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:17,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:15:17,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:17,713 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-11-29 20:15:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:17,923 INFO L93 Difference]: Finished difference Result 538 states and 913 transitions. [2020-11-29 20:15:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:17,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-11-29 20:15:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:17,943 INFO L225 Difference]: With dead ends: 538 [2020-11-29 20:15:17,943 INFO L226 Difference]: Without dead ends: 363 [2020-11-29 20:15:17,948 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 [2020-11-29 20:15:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-11-29 20:15:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-11-29 20:15:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-11-29 20:15:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 551 transitions. [2020-11-29 20:15:18,029 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 551 transitions. Word has length 45 [2020-11-29 20:15:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:18,030 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 551 transitions. [2020-11-29 20:15:18,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 551 transitions. [2020-11-29 20:15:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 20:15:18,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:18,045 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] [2020-11-29 20:15:18,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:15:18,266 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash 856140206, now seen corresponding path program 1 times [2020-11-29 20:15:18,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:15:18,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102873301] [2020-11-29 20:15:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/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 [2020-11-29 20:15:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:15:18,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:15:18,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:15:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:18,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:15:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:15:18,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102873301] [2020-11-29 20:15:18,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:15:18,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 20:15:18,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197249315] [2020-11-29 20:15:18,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:15:18,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:15:18,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:15:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:15:18,726 INFO L87 Difference]: Start difference. First operand 363 states and 551 transitions. Second operand 4 states. [2020-11-29 20:15:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:15:19,501 INFO L93 Difference]: Finished difference Result 834 states and 1272 transitions. [2020-11-29 20:15:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:15:19,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-11-29 20:15:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:15:19,509 INFO L225 Difference]: With dead ends: 834 [2020-11-29 20:15:19,509 INFO L226 Difference]: Without dead ends: 598 [2020-11-29 20:15:19,516 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 [2020-11-29 20:15:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-11-29 20:15:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-11-29 20:15:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-11-29 20:15:19,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 906 transitions. [2020-11-29 20:15:19,616 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 906 transitions. Word has length 103 [2020-11-29 20:15:19,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:15:19,617 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 906 transitions. [2020-11-29 20:15:19,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:15:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 906 transitions. [2020-11-29 20:15:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-29 20:15:19,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:15:19,641 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] [2020-11-29 20:15:19,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:15:19,847 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:15:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:15:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash -536013004, now seen corresponding path program 1 times [2020-11-29 20:15:19,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:15:19,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714657721] [2020-11-29 20:15:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/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 [2020-11-29 20:15:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:20,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:15:21,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:15:21,295 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:15:21,295 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:15:21,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:15:21,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:15:21 BoogieIcfgContainer [2020-11-29 20:15:21,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:15:21,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:15:21,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:15:21,752 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:15:21,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:15:17" (3/4) ... [2020-11-29 20:15:21,754 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:15:21,952 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_74be90d7-a656-4493-a379-0b1c0db48681/bin/uautomizer/witness.graphml [2020-11-29 20:15:21,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:15:21,954 INFO L168 Benchmark]: Toolchain (without parser) took 10193.69 ms. Allocated memory was 58.7 MB in the beginning and 121.6 MB in the end (delta: 62.9 MB). Free memory was 36.1 MB in the beginning and 45.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 51.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,955 INFO L168 Benchmark]: CDTParser took 1.14 ms. Allocated memory is still 58.7 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:15:21,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 941.83 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.9 MB in the beginning and 44.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.51 ms. Allocated memory is still 77.6 MB. Free memory was 44.4 MB in the beginning and 40.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,956 INFO L168 Benchmark]: Boogie Preprocessor took 177.68 ms. Allocated memory is still 77.6 MB. Free memory was 40.1 MB in the beginning and 52.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,957 INFO L168 Benchmark]: RCFGBuilder took 4099.14 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 52.0 MB in the beginning and 54.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,957 INFO L168 Benchmark]: TraceAbstraction took 4652.62 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.1 MB in the beginning and 62.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,958 INFO L168 Benchmark]: Witness Printer took 200.94 ms. Allocated memory is still 121.6 MB. Free memory was 62.2 MB in the beginning and 45.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:15:21,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.14 ms. Allocated memory is still 58.7 MB. Free memory is still 41.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 941.83 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 35.9 MB in the beginning and 44.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 112.51 ms. Allocated memory is still 77.6 MB. Free memory was 44.4 MB in the beginning and 40.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 177.68 ms. Allocated memory is still 77.6 MB. Free memory was 40.1 MB in the beginning and 52.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4099.14 ms. Allocated memory was 77.6 MB in the beginning and 100.7 MB in the end (delta: 23.1 MB). Free memory was 52.0 MB in the beginning and 54.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4652.62 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 54.1 MB in the beginning and 62.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 200.94 ms. Allocated memory is still 121.6 MB. Free memory was 62.2 MB in the beginning and 45.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 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: 4.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 1.0s, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.3s 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...