./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c45c2e72fe5956609ac14f38b7bc5b3490c2942a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:23:44,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:23:44,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:23:44,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:23:44,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:23:44,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:23:44,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:23:44,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:23:44,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:23:44,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:23:44,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:23:44,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:23:44,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:23:44,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:23:44,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:23:44,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:23:44,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:23:44,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:23:44,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:23:44,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:23:44,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:23:44,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:23:44,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:23:44,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:23:44,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:23:44,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:23:44,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:23:44,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:23:44,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:23:44,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:23:44,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:23:44,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:23:44,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:23:44,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:23:44,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:23:44,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:23:44,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:23:44,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:23:44,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:23:44,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:23:44,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:23:44,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:23:44,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:23:44,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:23:44,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:23:44,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:23:44,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:23:44,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:23:44,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:23:44,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:23:44,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:23:44,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:23:44,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:23:44,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:23:44,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:23:44,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:23:44,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:23:44,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:23:44,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:23:44,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:23:44,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:23:44,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:23:44,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:23:44,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:23:44,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:23:44,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:23:44,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:23:44,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:23:44,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:23:44,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:23:44,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:23:44,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c45c2e72fe5956609ac14f38b7bc5b3490c2942a [2020-10-19 22:23:44,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:23:44,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:23:44,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:23:44,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:23:44,359 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:23:44,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2020-10-19 22:23:44,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2a63d4e7/f7136b7375914028a94e52f9240fcd97/FLAG87d613fd1 [2020-10-19 22:23:44,973 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:23:44,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2020-10-19 22:23:44,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2a63d4e7/f7136b7375914028a94e52f9240fcd97/FLAG87d613fd1 [2020-10-19 22:23:45,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2a63d4e7/f7136b7375914028a94e52f9240fcd97 [2020-10-19 22:23:45,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:23:45,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:23:45,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:23:45,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:23:45,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:23:45,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641f0809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45, skipping insertion in model container [2020-10-19 22:23:45,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:23:45,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:23:45,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:23:45,738 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:23:45,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:23:45,835 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:23:45,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45 WrapperNode [2020-10-19 22:23:45,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:23:45,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:23:45,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:23:45,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:23:45,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:23:45,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:23:45,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:23:45,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:23:45,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... [2020-10-19 22:23:45,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:23:45,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:23:45,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:23:45,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:23:45,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:23:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:23:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:23:46,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:23:46,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:23:46,183 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:23:46,758 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-19 22:23:46,758 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-19 22:23:46,769 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:23:46,769 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:23:46,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:46 BoogieIcfgContainer [2020-10-19 22:23:46,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:23:46,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:23:46,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:23:46,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:23:46,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:23:45" (1/3) ... [2020-10-19 22:23:46,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51601df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:23:46, skipping insertion in model container [2020-10-19 22:23:46,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:45" (2/3) ... [2020-10-19 22:23:46,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51601df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:23:46, skipping insertion in model container [2020-10-19 22:23:46,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:46" (3/3) ... [2020-10-19 22:23:46,780 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2020-10-19 22:23:46,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:23:46,798 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:23:46,812 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:23:46,836 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:23:46,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:23:46,837 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:23:46,837 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:23:46,837 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:23:46,837 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:23:46,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:23:46,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:23:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-19 22:23:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:23:46,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:46,861 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] [2020-10-19 22:23:46,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:46,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2020-10-19 22:23:46,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:46,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887269461] [2020-10-19 22:23:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:47,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887269461] [2020-10-19 22:23:47,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:47,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:47,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084495412] [2020-10-19 22:23:47,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:47,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:47,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:47,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,107 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-10-19 22:23:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:47,296 INFO L93 Difference]: Finished difference Result 253 states and 428 transitions. [2020-10-19 22:23:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:47,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:23:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:47,324 INFO L225 Difference]: With dead ends: 253 [2020-10-19 22:23:47,324 INFO L226 Difference]: Without dead ends: 115 [2020-10-19 22:23:47,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-19 22:23:47,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-19 22:23:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-19 22:23:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-10-19 22:23:47,383 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-10-19 22:23:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:47,383 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-10-19 22:23:47,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-10-19 22:23:47,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:23:47,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:47,385 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] [2020-10-19 22:23:47,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:23:47,386 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2020-10-19 22:23:47,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:47,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272421452] [2020-10-19 22:23:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:47,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272421452] [2020-10-19 22:23:47,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:47,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:47,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520666228] [2020-10-19 22:23:47,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:47,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,478 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-10-19 22:23:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:47,635 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2020-10-19 22:23:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:47,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-19 22:23:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:47,638 INFO L225 Difference]: With dead ends: 238 [2020-10-19 22:23:47,638 INFO L226 Difference]: Without dead ends: 133 [2020-10-19 22:23:47,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-19 22:23:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2020-10-19 22:23:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-19 22:23:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2020-10-19 22:23:47,651 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2020-10-19 22:23:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:47,652 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2020-10-19 22:23:47,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:47,652 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2020-10-19 22:23:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:23:47,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:47,654 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:23:47,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:23:47,655 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:47,656 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2020-10-19 22:23:47,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:47,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13471918] [2020-10-19 22:23:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:23:47,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13471918] [2020-10-19 22:23:47,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:47,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:47,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635130413] [2020-10-19 22:23:47,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:47,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,742 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2020-10-19 22:23:47,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:47,912 INFO L93 Difference]: Finished difference Result 272 states and 408 transitions. [2020-10-19 22:23:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:47,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:23:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:47,915 INFO L225 Difference]: With dead ends: 272 [2020-10-19 22:23:47,915 INFO L226 Difference]: Without dead ends: 152 [2020-10-19 22:23:47,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-19 22:23:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2020-10-19 22:23:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-19 22:23:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2020-10-19 22:23:47,937 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2020-10-19 22:23:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:47,938 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2020-10-19 22:23:47,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2020-10-19 22:23:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:23:47,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:47,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:47,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:23:47,943 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1238030766, now seen corresponding path program 1 times [2020-10-19 22:23:47,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:47,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527525655] [2020-10-19 22:23:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:23:48,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527525655] [2020-10-19 22:23:48,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:48,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:48,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799378080] [2020-10-19 22:23:48,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:48,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:48,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,038 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand 3 states. [2020-10-19 22:23:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:48,226 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2020-10-19 22:23:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:48,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:23:48,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:48,229 INFO L225 Difference]: With dead ends: 335 [2020-10-19 22:23:48,229 INFO L226 Difference]: Without dead ends: 197 [2020-10-19 22:23:48,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-19 22:23:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2020-10-19 22:23:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-19 22:23:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2020-10-19 22:23:48,239 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2020-10-19 22:23:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:48,240 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2020-10-19 22:23:48,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2020-10-19 22:23:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:23:48,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:48,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:48,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:23:48,242 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1251498196, now seen corresponding path program 1 times [2020-10-19 22:23:48,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:48,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194316949] [2020-10-19 22:23:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:23:48,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194316949] [2020-10-19 22:23:48,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:48,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:48,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760866774] [2020-10-19 22:23:48,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:48,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,324 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand 3 states. [2020-10-19 22:23:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:48,450 INFO L93 Difference]: Finished difference Result 390 states and 555 transitions. [2020-10-19 22:23:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:48,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:23:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:48,452 INFO L225 Difference]: With dead ends: 390 [2020-10-19 22:23:48,452 INFO L226 Difference]: Without dead ends: 212 [2020-10-19 22:23:48,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-19 22:23:48,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-10-19 22:23:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-19 22:23:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2020-10-19 22:23:48,462 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2020-10-19 22:23:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:48,463 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2020-10-19 22:23:48,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2020-10-19 22:23:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:23:48,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:48,465 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:48,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:23:48,466 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1821092144, now seen corresponding path program 1 times [2020-10-19 22:23:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:48,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376997596] [2020-10-19 22:23:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:23:48,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376997596] [2020-10-19 22:23:48,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:48,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:48,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482586119] [2020-10-19 22:23:48,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:48,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:48,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:48,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,549 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand 3 states. [2020-10-19 22:23:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:48,684 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2020-10-19 22:23:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:48,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:23:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:48,687 INFO L225 Difference]: With dead ends: 428 [2020-10-19 22:23:48,687 INFO L226 Difference]: Without dead ends: 231 [2020-10-19 22:23:48,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-19 22:23:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-10-19 22:23:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-19 22:23:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-10-19 22:23:48,695 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2020-10-19 22:23:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:48,696 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-10-19 22:23:48,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2020-10-19 22:23:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:23:48,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:48,698 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:48,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:23:48,699 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1901861672, now seen corresponding path program 1 times [2020-10-19 22:23:48,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:48,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202603793] [2020-10-19 22:23:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:23:48,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202603793] [2020-10-19 22:23:48,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:48,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:48,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390991566] [2020-10-19 22:23:48,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:48,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:48,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,775 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand 3 states. [2020-10-19 22:23:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:48,819 INFO L93 Difference]: Finished difference Result 661 states and 912 transitions. [2020-10-19 22:23:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:48,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-19 22:23:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:48,823 INFO L225 Difference]: With dead ends: 661 [2020-10-19 22:23:48,823 INFO L226 Difference]: Without dead ends: 443 [2020-10-19 22:23:48,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-19 22:23:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2020-10-19 22:23:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-19 22:23:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 606 transitions. [2020-10-19 22:23:48,835 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 606 transitions. Word has length 105 [2020-10-19 22:23:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:48,835 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 606 transitions. [2020-10-19 22:23:48,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 606 transitions. [2020-10-19 22:23:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:23:48,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:48,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:48,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:23:48,838 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:48,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:48,839 INFO L82 PathProgramCache]: Analyzing trace with hash 837467901, now seen corresponding path program 1 times [2020-10-19 22:23:48,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:48,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588943117] [2020-10-19 22:23:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-19 22:23:48,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588943117] [2020-10-19 22:23:48,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:48,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:48,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965420864] [2020-10-19 22:23:48,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:48,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:48,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,904 INFO L87 Difference]: Start difference. First operand 443 states and 606 transitions. Second operand 3 states. [2020-10-19 22:23:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:48,942 INFO L93 Difference]: Finished difference Result 897 states and 1226 transitions. [2020-10-19 22:23:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:48,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:23:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:48,946 INFO L225 Difference]: With dead ends: 897 [2020-10-19 22:23:48,946 INFO L226 Difference]: Without dead ends: 464 [2020-10-19 22:23:48,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-19 22:23:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-19 22:23:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-19 22:23:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 633 transitions. [2020-10-19 22:23:48,957 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 633 transitions. Word has length 106 [2020-10-19 22:23:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 633 transitions. [2020-10-19 22:23:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 633 transitions. [2020-10-19 22:23:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:23:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:48,959 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:48,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:23:48,960 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:48,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1077707647, now seen corresponding path program 1 times [2020-10-19 22:23:48,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:48,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331035391] [2020-10-19 22:23:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-19 22:23:49,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331035391] [2020-10-19 22:23:49,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:49,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:49,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674253364] [2020-10-19 22:23:49,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:49,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:49,003 INFO L87 Difference]: Start difference. First operand 464 states and 633 transitions. Second operand 3 states. [2020-10-19 22:23:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:49,028 INFO L93 Difference]: Finished difference Result 945 states and 1287 transitions. [2020-10-19 22:23:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:49,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:23:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:49,031 INFO L225 Difference]: With dead ends: 945 [2020-10-19 22:23:49,032 INFO L226 Difference]: Without dead ends: 491 [2020-10-19 22:23:49,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-19 22:23:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-10-19 22:23:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-19 22:23:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 667 transitions. [2020-10-19 22:23:49,044 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 667 transitions. Word has length 106 [2020-10-19 22:23:49,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:49,044 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 667 transitions. [2020-10-19 22:23:49,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 667 transitions. [2020-10-19 22:23:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-19 22:23:49,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:49,047 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:49,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:23:49,047 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2015927886, now seen corresponding path program 1 times [2020-10-19 22:23:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:49,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910075647] [2020-10-19 22:23:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:23:49,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:23:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:23:49,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:23:49,238 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:23:49,238 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:23:49,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:23:49,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:23:49 BoogieIcfgContainer [2020-10-19 22:23:49,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:23:49,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:23:49,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:23:49,341 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:23:49,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:46" (3/4) ... [2020-10-19 22:23:49,344 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:23:49,607 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:23:49,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:23:49,610 INFO L168 Benchmark]: Toolchain (without parser) took 4265.81 ms. Allocated memory was 41.4 MB in the beginning and 80.7 MB in the end (delta: 39.3 MB). Free memory was 18.6 MB in the beginning and 57.0 MB in the end (delta: -38.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,610 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.48 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 17.7 MB in the beginning and 13.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.99 ms. Allocated memory is still 41.9 MB. Free memory was 13.0 MB in the beginning and 9.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,612 INFO L168 Benchmark]: Boogie Preprocessor took 47.33 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 9.9 MB in the beginning and 25.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 783.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,612 INFO L168 Benchmark]: RCFGBuilder took 825.47 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 24.9 MB in the beginning and 28.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,613 INFO L168 Benchmark]: TraceAbstraction took 2567.52 ms. Allocated memory was 46.1 MB in the beginning and 69.7 MB in the end (delta: 23.6 MB). Free memory was 27.3 MB in the beginning and 19.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,614 INFO L168 Benchmark]: Witness Printer took 267.19 ms. Allocated memory was 69.7 MB in the beginning and 80.7 MB in the end (delta: 11.0 MB). Free memory was 19.3 MB in the beginning and 57.0 MB in the end (delta: -37.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:49,617 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 31.5 MB. Free memory was 7.7 MB in the beginning and 7.6 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 487.48 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 17.7 MB in the beginning and 13.1 MB in the end (delta: 4.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 61.99 ms. Allocated memory is still 41.9 MB. Free memory was 13.0 MB in the beginning and 9.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 47.33 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 9.9 MB in the beginning and 25.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 783.4 kB. Max. memory is 14.3 GB. * RCFGBuilder took 825.47 ms. Allocated memory was 43.5 MB in the beginning and 46.1 MB in the end (delta: 2.6 MB). Free memory was 24.9 MB in the beginning and 28.0 MB in the end (delta: -3.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2567.52 ms. Allocated memory was 46.1 MB in the beginning and 69.7 MB in the end (delta: 23.6 MB). Free memory was 27.3 MB in the beginning and 19.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. * Witness Printer took 267.19 ms. Allocated memory was 69.7 MB in the beginning and 80.7 MB in the end (delta: 11.0 MB). Free memory was 19.3 MB in the beginning and 57.0 MB in the end (delta: -37.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L580] int s ; [L584] s = 12292 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__bbio = __VERIFIER_nondet_int() ; [L23] int s__wbio = __VERIFIER_nondet_int() ; [L24] int s__hit = __VERIFIER_nondet_int() ; [L25] int s__rwstate ; [L26] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L27] int s__debug = __VERIFIER_nondet_int() ; [L28] int s__shutdown ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L34] int s__s3__change_cipher_spec ; [L35] int s__s3__flags = __VERIFIER_nondet_int() ; [L36] int s__s3__delay_buf_pop_ret ; [L37] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L42] int s__s3__tmp__next_state___0 ; [L43] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L44] int s__session__cipher ; [L45] int s__session__compress_meth ; [L46] int buf ; [L47] unsigned long tmp ; [L48] unsigned long l ; [L49] int num1 = __VERIFIER_nondet_int() ; [L50] int cb ; [L51] int ret ; [L52] int new_state ; [L53] int state ; [L54] int skip ; [L55] int tmp___0 ; [L56] int tmp___1 = __VERIFIER_nondet_int() ; [L57] int tmp___2 = __VERIFIER_nondet_int() ; [L58] int tmp___3 = __VERIFIER_nondet_int() ; [L59] int tmp___4 = __VERIFIER_nondet_int() ; [L60] int tmp___5 = __VERIFIER_nondet_int() ; [L61] int tmp___6 = __VERIFIER_nondet_int() ; [L62] int tmp___7 = __VERIFIER_nondet_int() ; [L63] int tmp___8 = __VERIFIER_nondet_int() ; [L64] int tmp___9 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] void *__cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L70] void *__cil_tmp59 ; [L71] unsigned long __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L73] unsigned long __cil_tmp62 ; [L74] unsigned long __cil_tmp63 ; [L75] unsigned long __cil_tmp64 ; [L76] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L77] long __cil_tmp66 ; [L78] long __cil_tmp67 ; [L79] long __cil_tmp68 ; [L80] long __cil_tmp69 ; [L81] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L82] long __cil_tmp71 ; [L83] long __cil_tmp72 ; [L84] long __cil_tmp73 ; [L85] long __cil_tmp74 ; [L89] s__state = initial_state [L90] blastFlag = 0 [L91] tmp = __VERIFIER_nondet_int() [L92] cb = 0 [L93] ret = -1 [L94] skip = 0 [L95] tmp___0 = 0 [L96] COND TRUE s__info_callback != 0 [L97] cb = s__info_callback [L103] s__in_handshake ++ [L104] COND FALSE !(tmp___1 + 12288) [L110] COND TRUE 1 [L112] state = s__state [L113] COND TRUE s__state == 12292 [L215] s__new_session = 1 [L216] s__state = 4096 [L217] s__ctx__stats__sess_connect_renegotiate ++ [L222] s__server = 0 [L223] COND TRUE cb != 0 [L227] __cil_tmp55 = s__version + 65280 [L228] COND FALSE !(__cil_tmp55 != 768) [L233] s__type = 4096 [L235] __cil_tmp56 = (void *)0 [L236] __cil_tmp57 = (unsigned long )__cil_tmp56 [L237] __cil_tmp58 = (unsigned long )s__init_buf___0 [L238] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L256] COND FALSE !(! tmp___4) [L260] COND FALSE !(! tmp___5) [L264] s__state = 4368 [L265] s__ctx__stats__sess_connect ++ [L266] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND TRUE s__state == 4368 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] s__state = 4384 [L279] s__init_num = 0 [L281] __cil_tmp62 = (unsigned long )s__wbio [L282] __cil_tmp63 = (unsigned long )s__bbio [L283] COND TRUE __cil_tmp63 != __cil_tmp62 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND TRUE s__state == 4384 [L290] ret = __VERIFIER_nondet_int() [L291] COND TRUE blastFlag == 1 [L292] blastFlag = 2 [L298] COND FALSE !(ret <= 0) [L301] COND FALSE !(\read(s__hit)) [L304] s__state = 4400 [L306] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND TRUE s__state == 4400 [L311] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L312] COND FALSE !(__cil_tmp64 + 256UL) [L315] ret = __VERIFIER_nondet_int() [L316] COND TRUE blastFlag == 2 [L317] blastFlag = 3 [L319] COND FALSE !(ret <= 0) [L324] s__state = 4416 [L325] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND TRUE blastFlag == 3 [L331] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L336] s__state = 4432 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND FALSE !(s__state == 4416) [L149] COND FALSE !(s__state == 4417) [L152] COND TRUE s__state == 4432 [L345] ret = __VERIFIER_nondet_int() [L346] COND TRUE blastFlag == 4 [L3] __assert_fail("0", "s3_clnt_3.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1631 SDtfs, 275 SDslu, 970 SDs, 0 SdLazy, 642 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=9, 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, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 757 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 79489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 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...