./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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_10.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 87a4b11fd60d88478c9ad5217320492e74a11c2e ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 18:05:34,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 18:05:34,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 18:05:34,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 18:05:34,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 18:05:34,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 18:05:34,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 18:05:34,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 18:05:34,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 18:05:34,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 18:05:34,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 18:05:34,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 18:05:34,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 18:05:34,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 18:05:34,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 18:05:34,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 18:05:34,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 18:05:34,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 18:05:34,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 18:05:34,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 18:05:34,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 18:05:34,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 18:05:34,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 18:05:34,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 18:05:34,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 18:05:34,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 18:05:34,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 18:05:34,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 18:05:34,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 18:05:34,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 18:05:34,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 18:05:34,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 18:05:34,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 18:05:34,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 18:05:34,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 18:05:34,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 18:05:34,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 18:05:34,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 18:05:34,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 18:05:34,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 18:05:34,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 18:05:34,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 18:05:34,648 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 18:05:34,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 18:05:34,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 18:05:34,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 18:05:34,650 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 18:05:34,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 18:05:34,651 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 18:05:34,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 18:05:34,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 18:05:34,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 18:05:34,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 18:05:34,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:34,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 18:05:34,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 18:05:34,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87a4b11fd60d88478c9ad5217320492e74a11c2e [2021-07-04 18:05:34,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 18:05:34,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 18:05:34,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 18:05:34,903 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 18:05:34,903 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 18:05:34,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_10.cil.c [2021-07-04 18:05:34,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb93c9793/95871bb778fa43e682e93154faee3275/FLAG28a852af4 [2021-07-04 18:05:35,324 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 18:05:35,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_10.cil.c [2021-07-04 18:05:35,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb93c9793/95871bb778fa43e682e93154faee3275/FLAG28a852af4 [2021-07-04 18:05:35,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb93c9793/95871bb778fa43e682e93154faee3275 [2021-07-04 18:05:35,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 18:05:35,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 18:05:35,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:35,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 18:05:35,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 18:05:35,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce8e2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35, skipping insertion in model container [2021-07-04 18:05:35,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 18:05:35,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 18:05:35,580 WARN L224 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_10.cil.c[43262,43275] [2021-07-04 18:05:35,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:35,598 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 18:05:35,629 WARN L224 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_10.cil.c[43262,43275] [2021-07-04 18:05:35,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:35,640 INFO L208 MainTranslator]: Completed translation [2021-07-04 18:05:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35 WrapperNode [2021-07-04 18:05:35,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:35,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:35,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 18:05:35,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 18:05:35,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:35,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 18:05:35,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 18:05:35,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 18:05:35,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 18:05:35,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 18:05:35,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 18:05:35,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 18:05:35,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (1/1) ... [2021-07-04 18:05:35,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 18:05:35,754 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) [2021-07-04 18:05:35,780 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 [2021-07-04 18:05:35,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 18:05:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 18:05:35,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 18:05:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 18:05:35,962 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-04 18:05:36,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-07-04 18:05:36,421 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-07-04 18:05:36,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 18:05:36,427 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-04 18:05:36,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:36 BoogieIcfgContainer [2021-07-04 18:05:36,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 18:05:36,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 18:05:36,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 18:05:36,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 18:05:36,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 06:05:35" (1/3) ... [2021-07-04 18:05:36,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087b481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:36, skipping insertion in model container [2021-07-04 18:05:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:35" (2/3) ... [2021-07-04 18:05:36,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2087b481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:36, skipping insertion in model container [2021-07-04 18:05:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:36" (3/3) ... [2021-07-04 18:05:36,437 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_10.cil.c [2021-07-04 18:05:36,442 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 18:05:36,442 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 18:05:36,489 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 18:05:36,498 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 18:05:36,498 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 18:05:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7241379310344827) internal successors, (250), 146 states have internal predecessors, (250), 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) [2021-07-04 18:05:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-04 18:05:36,523 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:36,523 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:36,524 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1530370178, now seen corresponding path program 1 times [2021-07-04 18:05:36,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:36,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815352449] [2021-07-04 18:05:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:36,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:36,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:36,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:36,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:36,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:36,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:36,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:36,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:36,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815352449] [2021-07-04 18:05:36,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815352449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:36,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:36,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:36,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692702111] [2021-07-04 18:05:36,723 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:36,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:36,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:36,741 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7241379310344827) internal successors, (250), 146 states have internal predecessors, (250), 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 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-07-04 18:05:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:36,943 INFO L93 Difference]: Finished difference Result 312 states and 530 transitions. [2021-07-04 18:05:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-07-04 18:05:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:36,955 INFO L225 Difference]: With dead ends: 312 [2021-07-04 18:05:36,956 INFO L226 Difference]: Without dead ends: 153 [2021-07-04 18:05:36,958 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-07-04 18:05:36,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-07-04 18:05:36,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5733333333333333) internal successors, (236), 150 states have internal predecessors, (236), 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) [2021-07-04 18:05:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 236 transitions. [2021-07-04 18:05:36,987 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 236 transitions. Word has length 23 [2021-07-04 18:05:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:36,988 INFO L442 AbstractCegarLoop]: Abstraction has 151 states and 236 transitions. [2021-07-04 18:05:36,988 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-07-04 18:05:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 236 transitions. [2021-07-04 18:05:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-04 18:05:36,989 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:36,989 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:36,989 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 18:05:36,989 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -595070533, now seen corresponding path program 1 times [2021-07-04 18:05:36,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:36,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600024892] [2021-07-04 18:05:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:36,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:37,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:37,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:37,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:37,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600024892] [2021-07-04 18:05:37,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600024892] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:37,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:37,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:37,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440817675] [2021-07-04 18:05:37,057 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:37,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:37,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:37,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,058 INFO L87 Difference]: Start difference. First operand 151 states and 236 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-07-04 18:05:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:37,199 INFO L93 Difference]: Finished difference Result 314 states and 494 transitions. [2021-07-04 18:05:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-07-04 18:05:37,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:37,204 INFO L225 Difference]: With dead ends: 314 [2021-07-04 18:05:37,205 INFO L226 Difference]: Without dead ends: 171 [2021-07-04 18:05:37,208 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-07-04 18:05:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-07-04 18:05:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.5892857142857142) internal successors, (267), 168 states have internal predecessors, (267), 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) [2021-07-04 18:05:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 267 transitions. [2021-07-04 18:05:37,228 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 267 transitions. Word has length 24 [2021-07-04 18:05:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:37,229 INFO L442 AbstractCegarLoop]: Abstraction has 169 states and 267 transitions. [2021-07-04 18:05:37,229 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-07-04 18:05:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 267 transitions. [2021-07-04 18:05:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-04 18:05:37,230 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:37,231 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:37,231 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 18:05:37,233 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:37,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:37,234 INFO L82 PathProgramCache]: Analyzing trace with hash 61695231, now seen corresponding path program 1 times [2021-07-04 18:05:37,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:37,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473767204] [2021-07-04 18:05:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:37,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:37,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:37,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:37,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:37,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473767204] [2021-07-04 18:05:37,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473767204] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:37,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:37,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:37,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801395460] [2021-07-04 18:05:37,271 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:37,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:37,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:37,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,272 INFO L87 Difference]: Start difference. First operand 169 states and 267 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-07-04 18:05:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:37,383 INFO L93 Difference]: Finished difference Result 331 states and 524 transitions. [2021-07-04 18:05:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:37,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-07-04 18:05:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:37,395 INFO L225 Difference]: With dead ends: 331 [2021-07-04 18:05:37,395 INFO L226 Difference]: Without dead ends: 170 [2021-07-04 18:05:37,395 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-07-04 18:05:37,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-07-04 18:05:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.5857988165680474) internal successors, (268), 169 states have internal predecessors, (268), 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) [2021-07-04 18:05:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 268 transitions. [2021-07-04 18:05:37,409 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 268 transitions. Word has length 24 [2021-07-04 18:05:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:37,410 INFO L442 AbstractCegarLoop]: Abstraction has 170 states and 268 transitions. [2021-07-04 18:05:37,410 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-07-04 18:05:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 268 transitions. [2021-07-04 18:05:37,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-04 18:05:37,413 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:37,413 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:37,413 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 18:05:37,414 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:37,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:37,414 INFO L82 PathProgramCache]: Analyzing trace with hash -77832335, now seen corresponding path program 1 times [2021-07-04 18:05:37,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:37,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219534938] [2021-07-04 18:05:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:37,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:37,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:37,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:37,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:37,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219534938] [2021-07-04 18:05:37,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219534938] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:37,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:37,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:37,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826171223] [2021-07-04 18:05:37,473 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:37,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,474 INFO L87 Difference]: Start difference. First operand 170 states and 268 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-07-04 18:05:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:37,575 INFO L93 Difference]: Finished difference Result 341 states and 536 transitions. [2021-07-04 18:05:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-07-04 18:05:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:37,577 INFO L225 Difference]: With dead ends: 341 [2021-07-04 18:05:37,577 INFO L226 Difference]: Without dead ends: 179 [2021-07-04 18:05:37,577 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-07-04 18:05:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-07-04 18:05:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5561797752808988) internal successors, (277), 178 states have internal predecessors, (277), 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) [2021-07-04 18:05:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 277 transitions. [2021-07-04 18:05:37,584 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 277 transitions. Word has length 25 [2021-07-04 18:05:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:37,584 INFO L442 AbstractCegarLoop]: Abstraction has 179 states and 277 transitions. [2021-07-04 18:05:37,584 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-07-04 18:05:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 277 transitions. [2021-07-04 18:05:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-07-04 18:05:37,584 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:37,585 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:37,585 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-04 18:05:37,585 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash 845996009, now seen corresponding path program 1 times [2021-07-04 18:05:37,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:37,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31003772] [2021-07-04 18:05:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:37,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:37,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:37,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:37,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:37,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31003772] [2021-07-04 18:05:37,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31003772] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:37,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:37,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:37,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034462690] [2021-07-04 18:05:37,620 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:37,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,621 INFO L87 Difference]: Start difference. First operand 179 states and 277 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) [2021-07-04 18:05:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:37,748 INFO L93 Difference]: Finished difference Result 360 states and 554 transitions. [2021-07-04 18:05:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:37,749 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 26 [2021-07-04 18:05:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:37,750 INFO L225 Difference]: With dead ends: 360 [2021-07-04 18:05:37,750 INFO L226 Difference]: Without dead ends: 189 [2021-07-04 18:05:37,751 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-07-04 18:05:37,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-07-04 18:05:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5449438202247192) internal successors, (275), 178 states have internal predecessors, (275), 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) [2021-07-04 18:05:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 275 transitions. [2021-07-04 18:05:37,757 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 275 transitions. Word has length 26 [2021-07-04 18:05:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:37,757 INFO L442 AbstractCegarLoop]: Abstraction has 179 states and 275 transitions. [2021-07-04 18:05:37,757 INFO L443 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) [2021-07-04 18:05:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 275 transitions. [2021-07-04 18:05:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-04 18:05:37,758 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:37,758 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:37,758 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-04 18:05:37,758 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1554339536, now seen corresponding path program 1 times [2021-07-04 18:05:37,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:37,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80048097] [2021-07-04 18:05:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:37,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:37,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:37,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:37,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:37,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:37,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80048097] [2021-07-04 18:05:37,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80048097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:37,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:37,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:37,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129888770] [2021-07-04 18:05:37,783 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:37,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:37,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:37,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,783 INFO L87 Difference]: Start difference. First operand 179 states and 275 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-07-04 18:05:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:37,878 INFO L93 Difference]: Finished difference Result 360 states and 550 transitions. [2021-07-04 18:05:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:37,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2021-07-04 18:05:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:37,879 INFO L225 Difference]: With dead ends: 360 [2021-07-04 18:05:37,879 INFO L226 Difference]: Without dead ends: 189 [2021-07-04 18:05:37,880 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-07-04 18:05:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-07-04 18:05:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.5337078651685394) internal successors, (273), 178 states have internal predecessors, (273), 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) [2021-07-04 18:05:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 273 transitions. [2021-07-04 18:05:37,885 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 273 transitions. Word has length 27 [2021-07-04 18:05:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:37,885 INFO L442 AbstractCegarLoop]: Abstraction has 179 states and 273 transitions. [2021-07-04 18:05:37,886 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-07-04 18:05:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 273 transitions. [2021-07-04 18:05:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-04 18:05:37,886 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:37,887 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:37,887 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-04 18:05:37,887 INFO L374 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:37,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash 552780476, now seen corresponding path program 1 times [2021-07-04 18:05:37,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:37,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462085413] [2021-07-04 18:05:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:37,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:37,911 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:37,927 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:37,953 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 18:05:37,953 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 18:05:37,956 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-04 18:05:37,957 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 18:05:38,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 06:05:38 BoogieIcfgContainer [2021-07-04 18:05:38,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 18:05:38,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 18:05:38,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 18:05:38,007 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 18:05:38,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:36" (3/4) ... [2021-07-04 18:05:38,009 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 18:05:38,060 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 18:05:38,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 18:05:38,061 INFO L168 Benchmark]: Toolchain (without parser) took 2703.34 ms. Allocated memory was 50.3 MB in the beginning and 107.0 MB in the end (delta: 56.6 MB). Free memory was 27.5 MB in the beginning and 36.7 MB in the end (delta: -9.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,062 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 18:05:38,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.49 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 40.4 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,062 INFO L168 Benchmark]: Boogie Preprocessor took 47.64 ms. Allocated memory is still 60.8 MB. Free memory was 37.5 MB in the beginning and 35.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,063 INFO L168 Benchmark]: RCFGBuilder took 699.22 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 35.3 MB in the beginning and 57.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,063 INFO L168 Benchmark]: TraceAbstraction took 1576.34 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 43.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,063 INFO L168 Benchmark]: Witness Printer took 53.74 ms. Allocated memory is still 107.0 MB. Free memory was 43.0 MB in the beginning and 36.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:38,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.49 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 40.4 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.64 ms. Allocated memory is still 60.8 MB. Free memory was 37.5 MB in the beginning and 35.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 699.22 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 35.3 MB in the beginning and 57.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1576.34 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.2 MB in the beginning and 43.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. * Witness Printer took 53.74 ms. Allocated memory is still 107.0 MB. Free memory was 43.0 MB in the beginning and 36.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 630]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L636] int s ; [L637] int tmp ; [L641] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int buf = __VERIFIER_nondet_int() ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp = __VERIFIER_nondet_long() ; [L47] int cb ; [L48] long num1 ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 ; [L57] int tmp___4 ; [L58] int tmp___5 ; [L59] int tmp___6 ; [L60] int tmp___7 ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 ; [L63] int tmp___10 ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__s3__tmp__new_cipher__algorithms = 0 [L75] __cil_tmp56 = 0 [L76] __cil_tmp57 = 0 [L77] __cil_tmp58 = 0 [L78] __cil_tmp59 = 0 [L79] __cil_tmp60 = 0 [L80] __cil_tmp61 = 0 [L81] s__s3__tmp__reuse_message = 0 [L82] s__state = initial_state [L83] blastFlag = 0 [L84] Time = tmp [L85] cb = 0 [L86] ret = -1 [L87] skip = 0 [L88] got_new_session = 0 [L89] COND TRUE s__info_callback != 0 [L90] cb = s__info_callback [L96] s__in_handshake ++ [L97] COND FALSE !(tmp___1 + 12288) [L102] COND FALSE !(s__cert == 0) [L106] COND TRUE 1 [L108] state = s__state [L109] COND FALSE !(s__state == 12292) [L112] COND FALSE !(s__state == 16384) [L115] COND FALSE !(s__state == 8192) [L118] COND FALSE !(s__state == 24576) [L121] COND FALSE !(s__state == 8195) [L124] COND FALSE !(s__state == 8480) [L127] COND FALSE !(s__state == 8481) [L130] COND FALSE !(s__state == 8482) [L133] COND TRUE s__state == 8464 [L277] s__shutdown = 0 [L278] ret = __VERIFIER_nondet_int() [L279] COND TRUE blastFlag == 0 [L280] blastFlag = 1 [L282] COND FALSE !(ret <= 0) [L285] got_new_session = 1 [L286] s__state = 8496 [L287] s__init_num = 0 [L593] COND TRUE ! s__s3__tmp__reuse_message [L594] COND TRUE ! skip [L595] COND TRUE state == 8464 [L596] COND TRUE s__state == 8496 [L597] COND TRUE cb != 0 [L598] COND TRUE s__info_callback != 0 [L630] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1471.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 14.2ms, AutomataDifference: 839.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 846 SDtfs, 1058 SDslu, 126 SDs, 0 SdLazy, 496 SolverSat, 176 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 459.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 70.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.9ms SsaConstructionTime, 111.5ms SatisfiabilityAnalysisTime, 227.7ms InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-04 18:05:38,097 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...