./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-1.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 08176e5937aec24e9d4c4407f7c4c1e5f5b414b9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:23:36,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:23:36,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:23:36,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:23:36,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:23:36,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:23:36,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:23:36,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:23:36,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:23:36,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:23:36,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:23:36,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:23:36,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:23:36,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:23:36,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:23:36,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:23:36,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:23:36,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:23:36,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:23:36,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:23:36,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:23:36,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:23:36,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:23:36,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:23:36,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:23:36,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:23:36,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:23:36,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:23:36,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:23:36,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:23:36,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:23:36,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:23:36,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:23:36,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:23:36,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:23:36,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:23:36,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:23:36,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:23:36,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:23:36,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:23:36,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:23:36,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:23:36,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:23:36,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:23:36,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:23:36,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:23:36,410 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:23:36,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:23:36,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:23:36,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:23:36,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:23:36,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:23:36,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:23:36,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:23:36,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:23:36,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:23:36,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:23:36,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:23:36,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:23:36,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:23:36,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:23:36,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:23:36,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:23:36,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:23:36,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:23:36,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:23:36,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:23:36,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:23:36,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:23:36,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:23:36,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:23:36,416 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08176e5937aec24e9d4c4407f7c4c1e5f5b414b9 [2020-10-19 22:23:36,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:23:36,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:23:36,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:23:36,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:23:36,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:23:36,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-1.c [2020-10-19 22:23:36,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91c2f5f/87b00e1e6feb44548044b4ce8aa8720f/FLAGff3475243 [2020-10-19 22:23:37,188 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:23:37,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_2.cil-1.c [2020-10-19 22:23:37,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91c2f5f/87b00e1e6feb44548044b4ce8aa8720f/FLAGff3475243 [2020-10-19 22:23:37,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf91c2f5f/87b00e1e6feb44548044b4ce8aa8720f [2020-10-19 22:23:37,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:23:37,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:23:37,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:23:37,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:23:37,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:23:37,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:37,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782157a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37, skipping insertion in model container [2020-10-19 22:23:37,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:37,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:23:37,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:23:37,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:23:37,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:23:37,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:23:37,991 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:23:37,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37 WrapperNode [2020-10-19 22:23:37,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:23:37,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:23:37,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:23:37,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:23:38,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:23:38,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:23:38,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:23:38,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:23:38,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... [2020-10-19 22:23:38,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:23:38,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:23:38,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:23:38,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:23:38,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:23:38,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:23:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:23:38,302 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:23:38,850 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-10-19 22:23:38,850 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-10-19 22:23:38,863 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:23:38,864 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:23:38,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:38 BoogieIcfgContainer [2020-10-19 22:23:38,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:23:38,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:23:38,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:23:38,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:23:38,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:23:37" (1/3) ... [2020-10-19 22:23:38,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc412c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:23:38, skipping insertion in model container [2020-10-19 22:23:38,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:23:37" (2/3) ... [2020-10-19 22:23:38,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc412c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:23:38, skipping insertion in model container [2020-10-19 22:23:38,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:38" (3/3) ... [2020-10-19 22:23:38,875 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_2.cil-1.c [2020-10-19 22:23:38,886 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:23:38,894 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:23:38,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:23:38,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:23:38,937 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:23:38,938 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:23:38,938 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:23:38,938 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:23:38,939 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:23:38,939 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:23:38,939 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:23:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-19 22:23:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 22:23:38,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:38,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:38,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2020-10-19 22:23:38,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:38,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409680275] [2020-10-19 22:23:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:39,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409680275] [2020-10-19 22:23:39,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:39,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:39,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156462416] [2020-10-19 22:23:39,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:39,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:39,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:39,214 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-10-19 22:23:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:39,415 INFO L93 Difference]: Finished difference Result 253 states and 428 transitions. [2020-10-19 22:23:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:39,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-19 22:23:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:39,431 INFO L225 Difference]: With dead ends: 253 [2020-10-19 22:23:39,431 INFO L226 Difference]: Without dead ends: 115 [2020-10-19 22:23:39,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-19 22:23:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-19 22:23:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-19 22:23:39,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-10-19 22:23:39,483 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-10-19 22:23:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:39,484 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-10-19 22:23:39,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-10-19 22:23:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:23:39,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:39,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:39,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:23:39,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:39,488 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2020-10-19 22:23:39,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:39,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912559642] [2020-10-19 22:23:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:39,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912559642] [2020-10-19 22:23:39,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:39,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:39,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342198795] [2020-10-19 22:23:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:39,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:39,603 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-10-19 22:23:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:39,765 INFO L93 Difference]: Finished difference Result 239 states and 362 transitions. [2020-10-19 22:23:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:39,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-19 22:23:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:39,767 INFO L225 Difference]: With dead ends: 239 [2020-10-19 22:23:39,768 INFO L226 Difference]: Without dead ends: 134 [2020-10-19 22:23:39,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-19 22:23:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-19 22:23:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-19 22:23:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2020-10-19 22:23:39,782 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2020-10-19 22:23:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:39,782 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2020-10-19 22:23:39,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2020-10-19 22:23:39,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:23:39,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:39,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:39,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:23:39,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:39,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:39,786 INFO L82 PathProgramCache]: Analyzing trace with hash 684962052, now seen corresponding path program 1 times [2020-10-19 22:23:39,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:39,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739465271] [2020-10-19 22:23:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:23:39,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739465271] [2020-10-19 22:23:39,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:39,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:39,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836805106] [2020-10-19 22:23:39,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:39,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:39,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:39,875 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2020-10-19 22:23:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:40,019 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2020-10-19 22:23:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:40,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-10-19 22:23:40,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:40,021 INFO L225 Difference]: With dead ends: 271 [2020-10-19 22:23:40,022 INFO L226 Difference]: Without dead ends: 151 [2020-10-19 22:23:40,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-19 22:23:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2020-10-19 22:23:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-19 22:23:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2020-10-19 22:23:40,034 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2020-10-19 22:23:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:40,035 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2020-10-19 22:23:40,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2020-10-19 22:23:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:23:40,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:40,038 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:40,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:23:40,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash -184561774, now seen corresponding path program 1 times [2020-10-19 22:23:40,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:40,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440048862] [2020-10-19 22:23:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:23:40,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440048862] [2020-10-19 22:23:40,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:40,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:40,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455534900] [2020-10-19 22:23:40,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:40,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,150 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand 3 states. [2020-10-19 22:23:40,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:40,346 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2020-10-19 22:23:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:40,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:23:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:40,348 INFO L225 Difference]: With dead ends: 335 [2020-10-19 22:23:40,348 INFO L226 Difference]: Without dead ends: 197 [2020-10-19 22:23:40,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-19 22:23:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2020-10-19 22:23:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-19 22:23:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2020-10-19 22:23:40,384 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2020-10-19 22:23:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:40,387 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2020-10-19 22:23:40,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:40,387 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2020-10-19 22:23:40,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:23:40,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:40,396 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:40,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:23:40,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:40,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1990000108, now seen corresponding path program 1 times [2020-10-19 22:23:40,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:40,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702102338] [2020-10-19 22:23:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-19 22:23:40,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702102338] [2020-10-19 22:23:40,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:40,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:40,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347143097] [2020-10-19 22:23:40,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:40,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:40,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,456 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand 3 states. [2020-10-19 22:23:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:40,606 INFO L93 Difference]: Finished difference Result 390 states and 555 transitions. [2020-10-19 22:23:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:40,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-10-19 22:23:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:40,608 INFO L225 Difference]: With dead ends: 390 [2020-10-19 22:23:40,608 INFO L226 Difference]: Without dead ends: 212 [2020-10-19 22:23:40,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-19 22:23:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-10-19 22:23:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-19 22:23:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2020-10-19 22:23:40,627 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2020-10-19 22:23:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:40,628 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2020-10-19 22:23:40,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2020-10-19 22:23:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:23:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:40,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:40,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:23:40,630 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash -843012112, now seen corresponding path program 1 times [2020-10-19 22:23:40,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:40,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222829219] [2020-10-19 22:23:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-19 22:23:40,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222829219] [2020-10-19 22:23:40,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:40,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:40,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592441801] [2020-10-19 22:23:40,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:40,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:40,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,697 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand 3 states. [2020-10-19 22:23:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:40,844 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2020-10-19 22:23:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:40,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:23:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:40,846 INFO L225 Difference]: With dead ends: 428 [2020-10-19 22:23:40,847 INFO L226 Difference]: Without dead ends: 231 [2020-10-19 22:23:40,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-19 22:23:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-10-19 22:23:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-19 22:23:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-10-19 22:23:40,858 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2020-10-19 22:23:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:40,858 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-10-19 22:23:40,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2020-10-19 22:23:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:23:40,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:40,860 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:40,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:23:40,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1725839848, now seen corresponding path program 1 times [2020-10-19 22:23:40,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:40,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343265044] [2020-10-19 22:23:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:23:40,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343265044] [2020-10-19 22:23:40,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:40,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:40,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624930645] [2020-10-19 22:23:40,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:40,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:40,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:40,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,947 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand 3 states. [2020-10-19 22:23:40,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:40,981 INFO L93 Difference]: Finished difference Result 661 states and 912 transitions. [2020-10-19 22:23:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:40,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-19 22:23:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:40,985 INFO L225 Difference]: With dead ends: 661 [2020-10-19 22:23:40,985 INFO L226 Difference]: Without dead ends: 443 [2020-10-19 22:23:40,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-19 22:23:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2020-10-19 22:23:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-10-19 22:23:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 606 transitions. [2020-10-19 22:23:40,999 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 606 transitions. Word has length 105 [2020-10-19 22:23:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:40,999 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 606 transitions. [2020-10-19 22:23:40,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 606 transitions. [2020-10-19 22:23:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:23:41,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:41,001 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:41,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:23:41,002 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1889855194, now seen corresponding path program 1 times [2020-10-19 22:23:41,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:41,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633188134] [2020-10-19 22:23:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-19 22:23:41,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633188134] [2020-10-19 22:23:41,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:41,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:41,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761434292] [2020-10-19 22:23:41,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:41,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:41,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:41,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:41,069 INFO L87 Difference]: Start difference. First operand 443 states and 606 transitions. Second operand 3 states. [2020-10-19 22:23:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:41,092 INFO L93 Difference]: Finished difference Result 897 states and 1226 transitions. [2020-10-19 22:23:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:41,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-19 22:23:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:41,096 INFO L225 Difference]: With dead ends: 897 [2020-10-19 22:23:41,096 INFO L226 Difference]: Without dead ends: 464 [2020-10-19 22:23:41,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-19 22:23:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2020-10-19 22:23:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-19 22:23:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 633 transitions. [2020-10-19 22:23:41,109 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 633 transitions. Word has length 105 [2020-10-19 22:23:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:41,109 INFO L481 AbstractCegarLoop]: Abstraction has 464 states and 633 transitions. [2020-10-19 22:23:41,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 633 transitions. [2020-10-19 22:23:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:23:41,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:41,111 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:41,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:23:41,111 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:41,112 INFO L82 PathProgramCache]: Analyzing trace with hash -810746188, now seen corresponding path program 1 times [2020-10-19 22:23:41,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:41,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389151137] [2020-10-19 22:23:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-19 22:23:41,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389151137] [2020-10-19 22:23:41,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:41,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:23:41,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432377136] [2020-10-19 22:23:41,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:41,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:23:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:41,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:41,170 INFO L87 Difference]: Start difference. First operand 464 states and 633 transitions. Second operand 3 states. [2020-10-19 22:23:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:41,193 INFO L93 Difference]: Finished difference Result 945 states and 1287 transitions. [2020-10-19 22:23:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:41,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:23:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:41,196 INFO L225 Difference]: With dead ends: 945 [2020-10-19 22:23:41,197 INFO L226 Difference]: Without dead ends: 491 [2020-10-19 22:23:41,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-10-19 22:23:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-10-19 22:23:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-19 22:23:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 667 transitions. [2020-10-19 22:23:41,210 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 667 transitions. Word has length 106 [2020-10-19 22:23:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:41,210 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 667 transitions. [2020-10-19 22:23:41,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 667 transitions. [2020-10-19 22:23:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-19 22:23:41,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:41,212 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:41,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:23:41,213 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash 625791090, now seen corresponding path program 1 times [2020-10-19 22:23:41,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:23:41,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974529850] [2020-10-19 22:23:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:23:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:23:41,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:23:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:23:41,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:23:41,392 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:23:41,392 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:23:41,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:23:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:23:41 BoogieIcfgContainer [2020-10-19 22:23:41,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:23:41,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:23:41,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:23:41,572 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:23:41,573 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:23:38" (3/4) ... [2020-10-19 22:23:41,577 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:23:41,718 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:23:41,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:23:41,720 INFO L168 Benchmark]: Toolchain (without parser) took 4151.06 ms. Allocated memory was 40.4 MB in the beginning and 71.3 MB in the end (delta: 30.9 MB). Free memory was 17.8 MB in the beginning and 30.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 17.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,720 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 7.3 MB in the beginning and 7.3 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.29 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.9 MB in the beginning and 12.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.46 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 12.1 MB in the beginning and 25.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,722 INFO L168 Benchmark]: Boogie Preprocessor took 38.56 ms. Allocated memory is still 41.9 MB. Free memory was 25.0 MB in the beginning and 22.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,722 INFO L168 Benchmark]: RCFGBuilder took 767.04 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 22.7 MB in the beginning and 25.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,723 INFO L168 Benchmark]: TraceAbstraction took 2698.77 ms. Allocated memory was 45.1 MB in the beginning and 71.3 MB in the end (delta: 26.2 MB). Free memory was 25.5 MB in the beginning and 46.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,723 INFO L168 Benchmark]: Witness Printer took 151.35 ms. Allocated memory is still 71.3 MB. Free memory was 46.5 MB in the beginning and 30.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:41,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 30.9 MB. Free memory was 7.3 MB in the beginning and 7.3 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 417.29 ms. Allocated memory was 40.4 MB in the beginning and 40.9 MB in the end (delta: 524.3 kB). Free memory was 16.9 MB in the beginning and 12.1 MB in the end (delta: 4.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 67.46 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 12.1 MB in the beginning and 25.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.56 ms. Allocated memory is still 41.9 MB. Free memory was 25.0 MB in the beginning and 22.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 767.04 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 22.7 MB in the beginning and 25.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2698.77 ms. Allocated memory was 45.1 MB in the beginning and 71.3 MB in the end (delta: 26.2 MB). Free memory was 25.5 MB in the beginning and 46.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 14.3 GB. * Witness Printer took 151.35 ms. Allocated memory is still 71.3 MB. Free memory was 46.5 MB in the beginning and 30.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L555] int s ; [L559] s = 12292 [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__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = 1; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L75] long __cil_tmp65 ; [L79] s__state = initial_state [L80] blastFlag = 0 [L81] tmp = __VERIFIER_nondet_int() [L82] cb = 0 [L83] ret = -1 [L84] skip = 0 [L85] tmp___0 = 0 [L86] COND TRUE s__info_callback != 0 [L87] cb = s__info_callback [L93] s__in_handshake ++ [L94] COND FALSE !(tmp___1 - 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate ++ [L212] s__server = 0 [L213] COND TRUE cb != 0 [L217] __cil_tmp55 = s__version - 65280 [L218] COND FALSE !(__cil_tmp55 != 768) [L223] s__type = 4096 [L224] COND FALSE !(s__init_buf___0 == 0) [L236] COND FALSE !(! tmp___4) [L240] COND FALSE !(! tmp___5) [L244] s__state = 4368 [L245] s__ctx__stats__sess_connect ++ [L246] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L250] s__shutdown = 0 [L251] ret = __VERIFIER_nondet_int() [L252] COND TRUE blastFlag == 0 [L253] blastFlag = 1 [L259] COND FALSE !(ret <= 0) [L262] s__state = 4384 [L263] s__init_num = 0 [L264] COND TRUE s__bbio != s__wbio [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L270] ret = __VERIFIER_nondet_int() [L271] COND TRUE blastFlag == 1 [L272] blastFlag = 2 [L274] COND FALSE !(ret <= 0) [L277] COND FALSE !(\read(s__hit)) [L280] s__state = 4400 [L282] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L287] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L288] COND FALSE !(__cil_tmp56 - 256UL) [L291] ret = __VERIFIER_nondet_int() [L292] COND TRUE blastFlag == 2 [L293] blastFlag = 3 [L295] COND FALSE !(ret <= 0) [L300] s__state = 4416 [L301] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L305] ret = __VERIFIER_nondet_int() [L306] COND TRUE blastFlag == 3 [L307] blastFlag = 4 [L309] COND FALSE !(ret <= 0) [L312] s__state = 4432 [L313] s__init_num = 0 [L314] COND FALSE !(! tmp___6) [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 4 [L3] __assert_fail("0", "s3_clnt_2.cil-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1631 SDtfs, 275 SDslu, 970 SDs, 0 SdLazy, 642 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 756 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 79248 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...