./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca35bd50d888047fd624bd95d9bb19453630de07 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:14:13,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:14:13,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:14:13,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:14:13,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:14:13,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:14:13,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:14:13,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:14:13,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:14:13,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:14:13,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:14:13,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:14:13,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:14:13,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:14:13,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:14:13,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:14:13,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:14:13,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:14:13,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:14:13,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:14:13,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:14:13,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:14:13,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:14:13,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:14:13,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:14:13,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:14:13,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:14:13,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:14:13,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:14:13,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:14:13,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:14:13,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:14:13,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:14:13,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:14:13,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:14:13,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:14:13,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:14:13,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:14:13,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:14:13,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:14:13,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:14:13,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:14:13,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:14:13,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:14:13,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:14:13,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:14:13,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:14:13,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:14:13,882 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:14:13,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:14:13,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:14:13,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:14:13,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:14:13,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:14:13,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:14:13,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:14:13,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:14:13,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:14:13,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:14:13,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:14:13,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:14:13,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:14:13,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:14:13,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:14:13,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:14:13,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:14:13,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:14:13,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca35bd50d888047fd624bd95d9bb19453630de07 [2021-08-29 03:14:14,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:14:14,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:14:14,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:14:14,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:14:14,235 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:14:14,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-08-29 03:14:14,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7978198c/bc3cb578d98c4bd1a021e60914ca15d0/FLAGca06d6d63 [2021-08-29 03:14:14,674 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:14:14,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c [2021-08-29 03:14:14,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7978198c/bc3cb578d98c4bd1a021e60914ca15d0/FLAGca06d6d63 [2021-08-29 03:14:15,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7978198c/bc3cb578d98c4bd1a021e60914ca15d0 [2021-08-29 03:14:15,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:14:15,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:14:15,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:14:15,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:14:15,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:14:15,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50693137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15, skipping insertion in model container [2021-08-29 03:14:15,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:14:15,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:14:15,255 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[13706,13719] [2021-08-29 03:14:15,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:14:15,265 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:14:15,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1a.cil.c[13706,13719] [2021-08-29 03:14:15,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:14:15,352 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:14:15,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15 WrapperNode [2021-08-29 03:14:15,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:14:15,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:14:15,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:14:15,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:14:15,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:14:15,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:14:15,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:14:15,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:14:15,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:14:15,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:14:15,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:14:15,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:14:15,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (1/1) ... [2021-08-29 03:14:15,435 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:14:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:14:15,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 03:14:15,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 03:14:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:14:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:14:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:14:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:14:15,684 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:14:15,684 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-29 03:14:15,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:14:15 BoogieIcfgContainer [2021-08-29 03:14:15,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:14:15,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:14:15,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:14:15,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:14:15,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:14:15" (1/3) ... [2021-08-29 03:14:15,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ecf34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:14:15, skipping insertion in model container [2021-08-29 03:14:15,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:14:15" (2/3) ... [2021-08-29 03:14:15,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ecf34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:14:15, skipping insertion in model container [2021-08-29 03:14:15,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:14:15" (3/3) ... [2021-08-29 03:14:15,697 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.c [2021-08-29 03:14:15,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:14:15,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:14:15,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:14:15,762 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:14:15,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:14:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:15,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 03:14:15,784 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:15,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 03:14:15,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:15,793 INFO L82 PathProgramCache]: Analyzing trace with hash 28699930, now seen corresponding path program 1 times [2021-08-29 03:14:15,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:15,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137468248] [2021-08-29 03:14:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:15,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:14:16,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:16,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137468248] [2021-08-29 03:14:16,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137468248] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:16,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:16,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:16,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777397592] [2021-08-29 03:14:16,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:16,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,053 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 45 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:16,326 INFO L93 Difference]: Finished difference Result 131 states and 218 transitions. [2021-08-29 03:14:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:16,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-29 03:14:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:16,338 INFO L225 Difference]: With dead ends: 131 [2021-08-29 03:14:16,339 INFO L226 Difference]: Without dead ends: 79 [2021-08-29 03:14:16,342 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,345 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.89ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:16,347 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 237.89ms Time] [2021-08-29 03:14:16,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-29 03:14:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-08-29 03:14:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 121 transitions. [2021-08-29 03:14:16,377 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 121 transitions. Word has length 5 [2021-08-29 03:14:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:16,377 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 121 transitions. [2021-08-29 03:14:16,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 121 transitions. [2021-08-29 03:14:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 03:14:16,378 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:16,379 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:14:16,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:14:16,379 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:16,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1485309586, now seen corresponding path program 1 times [2021-08-29 03:14:16,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:16,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533238671] [2021-08-29 03:14:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:16,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:14:16,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:16,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533238671] [2021-08-29 03:14:16,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533238671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:16,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:16,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:16,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868153123] [2021-08-29 03:14:16,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:16,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,414 INFO L87 Difference]: Start difference. First operand 79 states and 121 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:16,629 INFO L93 Difference]: Finished difference Result 156 states and 246 transitions. [2021-08-29 03:14:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:16,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 03:14:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:16,631 INFO L225 Difference]: With dead ends: 156 [2021-08-29 03:14:16,631 INFO L226 Difference]: Without dead ends: 116 [2021-08-29 03:14:16,632 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,633 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.25ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:16,634 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 188 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [6 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 188.25ms Time] [2021-08-29 03:14:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-29 03:14:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-29 03:14:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.5217391304347827) internal successors, (175), 115 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 175 transitions. [2021-08-29 03:14:16,648 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 175 transitions. Word has length 10 [2021-08-29 03:14:16,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:16,648 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 175 transitions. [2021-08-29 03:14:16,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,649 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 175 transitions. [2021-08-29 03:14:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 03:14:16,650 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:16,650 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:14:16,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 03:14:16,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:16,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:16,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1152886494, now seen corresponding path program 1 times [2021-08-29 03:14:16,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:16,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446869401] [2021-08-29 03:14:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:16,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-29 03:14:16,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:16,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446869401] [2021-08-29 03:14:16,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446869401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:16,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:16,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:16,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637601042] [2021-08-29 03:14:16,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:16,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,690 INFO L87 Difference]: Start difference. First operand 116 states and 175 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:16,876 INFO L93 Difference]: Finished difference Result 230 states and 355 transitions. [2021-08-29 03:14:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 03:14:16,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:16,878 INFO L225 Difference]: With dead ends: 230 [2021-08-29 03:14:16,878 INFO L226 Difference]: Without dead ends: 153 [2021-08-29 03:14:16,879 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,880 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.30ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:16,881 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 191 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 160.30ms Time] [2021-08-29 03:14:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-29 03:14:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-08-29 03:14:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.513157894736842) internal successors, (230), 152 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 230 transitions. [2021-08-29 03:14:16,916 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 230 transitions. Word has length 16 [2021-08-29 03:14:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:16,916 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 230 transitions. [2021-08-29 03:14:16,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 230 transitions. [2021-08-29 03:14:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 03:14:16,918 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:16,918 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:14:16,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 03:14:16,919 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:16,919 INFO L82 PathProgramCache]: Analyzing trace with hash -77104047, now seen corresponding path program 1 times [2021-08-29 03:14:16,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:16,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956848876] [2021-08-29 03:14:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:16,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-29 03:14:16,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:16,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956848876] [2021-08-29 03:14:16,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956848876] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:16,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:16,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:16,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355144515] [2021-08-29 03:14:16,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:16,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:16,997 INFO L87 Difference]: Start difference. First operand 153 states and 230 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:17,155 INFO L93 Difference]: Finished difference Result 321 states and 484 transitions. [2021-08-29 03:14:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:17,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-29 03:14:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:17,157 INFO L225 Difference]: With dead ends: 321 [2021-08-29 03:14:17,157 INFO L226 Difference]: Without dead ends: 170 [2021-08-29 03:14:17,158 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,160 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.69ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:17,160 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 104.69ms Time] [2021-08-29 03:14:17,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-08-29 03:14:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2021-08-29 03:14:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.473053892215569) internal successors, (246), 167 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 246 transitions. [2021-08-29 03:14:17,176 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 246 transitions. Word has length 31 [2021-08-29 03:14:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:17,176 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 246 transitions. [2021-08-29 03:14:17,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 246 transitions. [2021-08-29 03:14:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 03:14:17,178 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:17,178 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:14:17,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 03:14:17,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1611839695, now seen corresponding path program 1 times [2021-08-29 03:14:17,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:17,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65237140] [2021-08-29 03:14:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:17,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-29 03:14:17,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:17,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65237140] [2021-08-29 03:14:17,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65237140] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:17,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:17,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:17,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075534230] [2021-08-29 03:14:17,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:17,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,224 INFO L87 Difference]: Start difference. First operand 168 states and 246 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:17,346 INFO L93 Difference]: Finished difference Result 378 states and 567 transitions. [2021-08-29 03:14:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-29 03:14:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:17,352 INFO L225 Difference]: With dead ends: 378 [2021-08-29 03:14:17,353 INFO L226 Difference]: Without dead ends: 212 [2021-08-29 03:14:17,356 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,363 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.40ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:17,364 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 84.40ms Time] [2021-08-29 03:14:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-08-29 03:14:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2021-08-29 03:14:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.383495145631068) internal successors, (285), 206 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 285 transitions. [2021-08-29 03:14:17,400 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 285 transitions. Word has length 31 [2021-08-29 03:14:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:17,404 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 285 transitions. [2021-08-29 03:14:17,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 285 transitions. [2021-08-29 03:14:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 03:14:17,407 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:17,407 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-08-29 03:14:17,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 03:14:17,407 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -359756882, now seen corresponding path program 1 times [2021-08-29 03:14:17,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:17,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66864772] [2021-08-29 03:14:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:17,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-29 03:14:17,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:17,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66864772] [2021-08-29 03:14:17,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66864772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:17,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:17,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:17,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729374151] [2021-08-29 03:14:17,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:17,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:17,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,470 INFO L87 Difference]: Start difference. First operand 207 states and 285 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:17,575 INFO L93 Difference]: Finished difference Result 415 states and 578 transitions. [2021-08-29 03:14:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:17,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-29 03:14:17,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:17,577 INFO L225 Difference]: With dead ends: 415 [2021-08-29 03:14:17,577 INFO L226 Difference]: Without dead ends: 265 [2021-08-29 03:14:17,579 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,582 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.43ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:17,584 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 92.43ms Time] [2021-08-29 03:14:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-08-29 03:14:17,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-08-29 03:14:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3931297709923665) internal successors, (365), 262 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 365 transitions. [2021-08-29 03:14:17,608 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 365 transitions. Word has length 45 [2021-08-29 03:14:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:17,608 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 365 transitions. [2021-08-29 03:14:17,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 365 transitions. [2021-08-29 03:14:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-29 03:14:17,617 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:17,617 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-08-29 03:14:17,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 03:14:17,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1572307813, now seen corresponding path program 1 times [2021-08-29 03:14:17,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:17,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112401038] [2021-08-29 03:14:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:17,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-29 03:14:17,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:17,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112401038] [2021-08-29 03:14:17,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112401038] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:17,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:17,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:17,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252914297] [2021-08-29 03:14:17,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:17,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,692 INFO L87 Difference]: Start difference. First operand 263 states and 365 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:17,775 INFO L93 Difference]: Finished difference Result 522 states and 739 transitions. [2021-08-29 03:14:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-29 03:14:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:17,778 INFO L225 Difference]: With dead ends: 522 [2021-08-29 03:14:17,778 INFO L226 Difference]: Without dead ends: 183 [2021-08-29 03:14:17,779 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,782 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.36ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:17,782 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [16 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 70.36ms Time] [2021-08-29 03:14:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-29 03:14:17,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-08-29 03:14:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.3016759776536313) internal successors, (233), 179 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 233 transitions. [2021-08-29 03:14:17,793 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 233 transitions. Word has length 48 [2021-08-29 03:14:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:17,794 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 233 transitions. [2021-08-29 03:14:17,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 233 transitions. [2021-08-29 03:14:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-29 03:14:17,801 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:14:17,801 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:14:17,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 03:14:17,802 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:14:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:14:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1927293386, now seen corresponding path program 1 times [2021-08-29 03:14:17,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:14:17,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844983610] [2021-08-29 03:14:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:14:17,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:14:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:14:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-29 03:14:17,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:14:17,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844983610] [2021-08-29 03:14:17,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844983610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:14:17,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:14:17,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:14:17,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490612652] [2021-08-29 03:14:17,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:14:17,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:14:17,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:14:17,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,876 INFO L87 Difference]: Start difference. First operand 180 states and 233 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:14:17,957 INFO L93 Difference]: Finished difference Result 273 states and 334 transitions. [2021-08-29 03:14:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:14:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-08-29 03:14:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:14:17,958 INFO L225 Difference]: With dead ends: 273 [2021-08-29 03:14:17,958 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 03:14:17,959 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:14:17,959 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.48ms IncrementalHoareTripleChecker+Time [2021-08-29 03:14:17,960 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 73.48ms Time] [2021-08-29 03:14:17,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 03:14:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 03:14:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 03:14:17,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2021-08-29 03:14:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:14:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 03:14:17,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:14:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 03:14:17,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 03:14:17,965 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:14:17,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 03:14:17,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 03:14:17,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:17,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:17,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:17,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:17,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:17,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 03:14:18,286 INFO L861 garLoopResultBuilder]: At program point L218(lines 10 219) the Hoare annotation is: true [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point L70(lines 70 187) no Hoare annotation was computed. [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 191) no Hoare annotation was computed. [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point L153-1(lines 76 185) no Hoare annotation was computed. [2021-08-29 03:14:18,286 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 195) no Hoare annotation was computed. [2021-08-29 03:14:18,287 INFO L858 garLoopResultBuilder]: For program point L87-1(lines 76 185) no Hoare annotation was computed. [2021-08-29 03:14:18,287 INFO L854 garLoopResultBuilder]: At program point L178(lines 24 213) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~blastFlag~0 3))) (or (and .cse0 (<= 8640 ULTIMATE.start_main_~s__state~0) (not (= ULTIMATE.start_main_~s__hit~0 0))) (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (and .cse0 (<= 8672 ULTIMATE.start_main_~s__state~0)) (= ULTIMATE.start_main_~blastFlag~0 0))) [2021-08-29 03:14:18,287 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 199) no Hoare annotation was computed. [2021-08-29 03:14:18,287 INFO L858 garLoopResultBuilder]: For program point L137(lines 137 141) no Hoare annotation was computed. [2021-08-29 03:14:18,287 INFO L854 garLoopResultBuilder]: At program point L71(lines 70 187) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 1)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)))) [2021-08-29 03:14:18,287 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 203) no Hoare annotation was computed. [2021-08-29 03:14:18,287 INFO L854 garLoopResultBuilder]: At program point L63(lines 62 191) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,287 INFO L854 garLoopResultBuilder]: At program point L55(lines 54 195) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,288 INFO L854 garLoopResultBuilder]: At program point L47(lines 46 199) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,288 INFO L858 garLoopResultBuilder]: For program point L80-1(lines 80 82) no Hoare annotation was computed. [2021-08-29 03:14:18,288 INFO L858 garLoopResultBuilder]: For program point L171-1(lines 76 185) no Hoare annotation was computed. [2021-08-29 03:14:18,288 INFO L854 garLoopResultBuilder]: At program point L39(lines 38 203) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~s__state~0 8512))) (or (and (= ULTIMATE.start_main_~blastFlag~0 1) .cse0) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)))) [2021-08-29 03:14:18,288 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 206) no Hoare annotation was computed. [2021-08-29 03:14:18,288 INFO L854 garLoopResultBuilder]: At program point L122(lines 115 124) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,288 INFO L854 garLoopResultBuilder]: At program point L114(lines 107 125) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,288 INFO L858 garLoopResultBuilder]: For program point L164-1(lines 164 166) no Hoare annotation was computed. [2021-08-29 03:14:18,288 INFO L854 garLoopResultBuilder]: At program point L32(lines 31 206) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L107(lines 107 125) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L74(lines 74 185) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 189) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 193) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-08-29 03:14:18,289 INFO L861 garLoopResultBuilder]: At program point L215(lines 10 219) the Hoare annotation is: true [2021-08-29 03:14:18,289 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 120) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L858 garLoopResultBuilder]: For program point L50(lines 50 197) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L858 garLoopResultBuilder]: For program point L174(lines 174 176) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L858 garLoopResultBuilder]: For program point L108(lines 108 112) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L854 garLoopResultBuilder]: At program point L75(lines 74 185) the Hoare annotation is: (and (<= ULTIMATE.start_main_~blastFlag~0 3) (<= 8672 ULTIMATE.start_main_~s__state~0)) [2021-08-29 03:14:18,290 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 201) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L854 garLoopResultBuilder]: At program point L67(lines 66 189) the Hoare annotation is: (let ((.cse0 (<= 8640 ULTIMATE.start_main_~s__state~0))) (or (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 1)) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 0)) (and (<= ULTIMATE.start_main_~blastFlag~0 3) .cse0 (not (= ULTIMATE.start_main_~s__hit~0 0))) (and .cse0 (= ULTIMATE.start_main_~blastFlag~0 2)))) [2021-08-29 03:14:18,290 INFO L858 garLoopResultBuilder]: For program point L34(lines 34 205) no Hoare annotation was computed. [2021-08-29 03:14:18,290 INFO L854 garLoopResultBuilder]: At program point L59(lines 58 193) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,290 INFO L854 garLoopResultBuilder]: At program point L51(lines 50 197) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,291 INFO L854 garLoopResultBuilder]: At program point L175(lines 10 219) the Hoare annotation is: false [2021-08-29 03:14:18,291 INFO L854 garLoopResultBuilder]: At program point L43(lines 42 201) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,291 INFO L854 garLoopResultBuilder]: At program point L35(lines 34 205) the Hoare annotation is: (or (= ULTIMATE.start_main_~blastFlag~0 1) (= ULTIMATE.start_main_~blastFlag~0 2) (= ULTIMATE.start_main_~blastFlag~0 0)) [2021-08-29 03:14:18,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:14:18,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:14:18 BoogieIcfgContainer [2021-08-29 03:14:18,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:14:18,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:14:18,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:14:18,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:14:18,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:14:15" (3/4) ... [2021-08-29 03:14:18,332 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 03:14:18,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 03:14:18,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 03:14:18,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:14:18,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 03:14:18,396 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:14:18,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:14:18,397 INFO L158 Benchmark]: Toolchain (without parser) took 3298.81ms. Allocated memory was 73.4MB in the beginning and 109.1MB in the end (delta: 35.7MB). Free memory was 55.1MB in the beginning and 72.5MB in the end (delta: -17.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,397 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 73.4MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:14:18,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.17ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 55.0MB in the end (delta: -81.2kB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.08ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,399 INFO L158 Benchmark]: Boogie Preprocessor took 30.78ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 52.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,399 INFO L158 Benchmark]: RCFGBuilder took 273.70ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 41.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,399 INFO L158 Benchmark]: TraceAbstraction took 2639.47ms. Allocated memory was 73.4MB in the beginning and 109.1MB in the end (delta: 35.7MB). Free memory was 41.1MB in the beginning and 76.8MB in the end (delta: -35.7MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,400 INFO L158 Benchmark]: Witness Printer took 69.16ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 72.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:14:18,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 73.4MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.17ms. Allocated memory is still 73.4MB. Free memory was 54.9MB in the beginning and 55.0MB in the end (delta: -81.2kB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.08ms. Allocated memory is still 73.4MB. Free memory was 55.0MB in the beginning and 53.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.78ms. Allocated memory is still 73.4MB. Free memory was 53.3MB in the beginning and 52.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.70ms. Allocated memory is still 73.4MB. Free memory was 52.2MB in the beginning and 41.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2639.47ms. Allocated memory was 73.4MB in the beginning and 109.1MB in the end (delta: 35.7MB). Free memory was 41.1MB in the beginning and 76.8MB in the end (delta: -35.7MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. * Witness Printer took 69.16ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 72.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 217]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2541.69ms, OverallIterations: 8, TraceHistogramMax: 6, EmptinessCheckTime: 31.75ms, AutomataDifference: 1340.67ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 320.17ms, InitialAbstractionConstructionTime: 11.49ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 1011.79ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 735.31ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 321 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1173 IncrementalHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 0 mSDtfsCounter, 1173 mSolverCounterSat, 10.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.28ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 151.86ms AutomataMinimizationTime, 8 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 18 LocationsWithAnnotation, 18 PreInvPairs, 85 NumberOfFragments, 226 HoareAnnotationTreeSize, 18 FomulaSimplifications, 203 FormulaSimplificationTreeSizeReduction, 67.01ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 243.66ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 20.35ms SsaConstructionTime, 156.04ms SatisfiabilityAnalysisTime, 330.35ms InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 218/218 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: (((8640 <= s__state && blastFlag == 1) || (8640 <= s__state && blastFlag == 0)) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0))) || (8640 <= s__state && blastFlag == 2) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: (((8640 <= s__state && blastFlag == 1) || (8640 <= s__state && blastFlag == 0)) || ((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0))) || (8640 <= s__state && blastFlag == 2) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: blastFlag <= 3 && 8672 <= s__state - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((blastFlag <= 3 && 8640 <= s__state) && !(s__hit == 0)) || blastFlag == 1) || blastFlag == 2) || (blastFlag <= 3 && 8672 <= s__state)) || blastFlag == 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 115]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (blastFlag == 1 || blastFlag == 2) || blastFlag == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((blastFlag == 1 && s__state == 8512) || (s__state == 8512 && blastFlag == 2)) || (s__state == 8512 && blastFlag == 0) RESULT: Ultimate proved your program to be correct! [2021-08-29 03:14:18,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...