./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 305e9c546a6cc2591d6267bc612ab5ec3e8adaa4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:13,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:13,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:13,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:13,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:13,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:13,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:13,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:13,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:13,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:13,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:13,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:13,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:13,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:13,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:13,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:13,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:13,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:13,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:13,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:13,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:13,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:13,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:13,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:13,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:13,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:13,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:13,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:13,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:13,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:13,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:13,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:13,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:13,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:13,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:13,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:13,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:13,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:13,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:13,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:13,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:13,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:57:13,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:13,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:13,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:13,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:13,586 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:13,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:13,586 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:13,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:13,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:13,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:13,587 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:13,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:57:13,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:13,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:13,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:57:13,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:57:13,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:13,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:13,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:57:13,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:57:13,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:13,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:57:13,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:57:13,590 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_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 -> 305e9c546a6cc2591d6267bc612ab5ec3e8adaa4 [2019-10-22 08:57:13,617 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:13,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:13,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:13,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:13,634 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:13,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2019-10-22 08:57:13,680 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/data/790cd1181/ada1e943a81747fea78ffe1e0777de91/FLAG75b4433a3 [2019-10-22 08:57:14,050 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:14,050 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2019-10-22 08:57:14,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/data/790cd1181/ada1e943a81747fea78ffe1e0777de91/FLAG75b4433a3 [2019-10-22 08:57:14,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/data/790cd1181/ada1e943a81747fea78ffe1e0777de91 [2019-10-22 08:57:14,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:14,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:14,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:14,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:14,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:14,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff8676e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14, skipping insertion in model container [2019-10-22 08:57:14,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,084 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:14,098 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:14,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:14,226 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:14,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:14,304 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:14,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14 WrapperNode [2019-10-22 08:57:14,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:14,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:14,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:14,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:14,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:14,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:14,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:14,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:14,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... [2019-10-22 08:57:14,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:14,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:14,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:14,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:14,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:57:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:14,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:14,667 INFO L284 CfgBuilder]: Removed 21 assume(true) statements. [2019-10-22 08:57:14,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:14 BoogieIcfgContainer [2019-10-22 08:57:14,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:14,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:57:14,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:57:14,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:57:14,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:57:14" (1/3) ... [2019-10-22 08:57:14,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a59b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:14, skipping insertion in model container [2019-10-22 08:57:14,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:14" (2/3) ... [2019-10-22 08:57:14,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a59b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:57:14, skipping insertion in model container [2019-10-22 08:57:14,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:14" (3/3) ... [2019-10-22 08:57:14,676 INFO L109 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2019-10-22 08:57:14,685 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:14,699 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 08:57:14,707 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 08:57:14,729 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:14,729 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:14,729 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:14,729 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:14,729 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:14,730 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:14,730 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:14,730 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-22 08:57:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:57:14,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:14,750 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:14,752 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1436471502, now seen corresponding path program 1 times [2019-10-22 08:57:14,765 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:14,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822565249] [2019-10-22 08:57:14,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:14,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:14,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:14,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822565249] [2019-10-22 08:57:14,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:14,864 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:14,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780679249] [2019-10-22 08:57:14,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:57:14,869 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:14,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:57:14,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:14,882 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-22 08:57:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:14,900 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2019-10-22 08:57:14,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:14,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-10-22 08:57:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:14,909 INFO L225 Difference]: With dead ends: 85 [2019-10-22 08:57:14,909 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 08:57:14,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 08:57:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-22 08:57:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 08:57:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2019-10-22 08:57:14,942 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 9 [2019-10-22 08:57:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:14,942 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2019-10-22 08:57:14,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:57:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2019-10-22 08:57:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:57:14,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:14,943 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:14,944 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1526631753, now seen corresponding path program 1 times [2019-10-22 08:57:14,944 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:14,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743344912] [2019-10-22 08:57:14,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:14,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:14,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:15,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743344912] [2019-10-22 08:57:15,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:15,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:15,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157839298] [2019-10-22 08:57:15,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:15,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:15,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:15,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:15,017 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 4 states. [2019-10-22 08:57:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:15,106 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-10-22 08:57:15,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:57:15,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 08:57:15,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:15,107 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:57:15,107 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 08:57:15,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 08:57:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-22 08:57:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:57:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-10-22 08:57:15,113 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 10 [2019-10-22 08:57:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:15,113 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-10-22 08:57:15,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-10-22 08:57:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:57:15,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:15,114 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:15,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:15,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:15,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1785542740, now seen corresponding path program 1 times [2019-10-22 08:57:15,115 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:15,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757361838] [2019-10-22 08:57:15,115 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:15,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757361838] [2019-10-22 08:57:15,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:15,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:15,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402108734] [2019-10-22 08:57:15,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:57:15,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:15,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:15,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:15,177 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 5 states. [2019-10-22 08:57:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:15,381 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-10-22 08:57:15,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:57:15,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-22 08:57:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:15,383 INFO L225 Difference]: With dead ends: 50 [2019-10-22 08:57:15,383 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 08:57:15,384 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:57:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 08:57:15,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-10-22 08:57:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-22 08:57:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2019-10-22 08:57:15,394 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 12 [2019-10-22 08:57:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:15,395 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2019-10-22 08:57:15,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:57:15,395 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2019-10-22 08:57:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 08:57:15,395 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:15,396 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:15,398 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash -734801565, now seen corresponding path program 1 times [2019-10-22 08:57:15,398 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:15,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843909570] [2019-10-22 08:57:15,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,399 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:15,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843909570] [2019-10-22 08:57:15,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:15,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:15,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63319745] [2019-10-22 08:57:15,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:15,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:15,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:15,462 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 4 states. [2019-10-22 08:57:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:15,504 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2019-10-22 08:57:15,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:57:15,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-22 08:57:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:15,505 INFO L225 Difference]: With dead ends: 44 [2019-10-22 08:57:15,505 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 08:57:15,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 08:57:15,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-22 08:57:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 08:57:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-10-22 08:57:15,511 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 15 [2019-10-22 08:57:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:15,512 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-10-22 08:57:15,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-10-22 08:57:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:57:15,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:15,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:15,513 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:15,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2090765742, now seen corresponding path program 1 times [2019-10-22 08:57:15,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:15,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80470036] [2019-10-22 08:57:15,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:15,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80470036] [2019-10-22 08:57:15,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:15,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:57:15,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731358113] [2019-10-22 08:57:15,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:57:15,586 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:15,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:57:15,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:57:15,586 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 6 states. [2019-10-22 08:57:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:15,726 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2019-10-22 08:57:15,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:57:15,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 08:57:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:15,727 INFO L225 Difference]: With dead ends: 71 [2019-10-22 08:57:15,727 INFO L226 Difference]: Without dead ends: 57 [2019-10-22 08:57:15,727 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:57:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-22 08:57:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2019-10-22 08:57:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:57:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-10-22 08:57:15,734 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 16 [2019-10-22 08:57:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:15,735 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-10-22 08:57:15,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:57:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-10-22 08:57:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 08:57:15,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:15,736 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:15,736 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:15,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1769510362, now seen corresponding path program 1 times [2019-10-22 08:57:15,736 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:15,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459598700] [2019-10-22 08:57:15,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:15,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459598700] [2019-10-22 08:57:15,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:15,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:57:15,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069998718] [2019-10-22 08:57:15,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:57:15,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:15,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:57:15,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:57:15,799 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2019-10-22 08:57:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:15,930 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2019-10-22 08:57:15,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:57:15,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-22 08:57:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:15,931 INFO L225 Difference]: With dead ends: 63 [2019-10-22 08:57:15,931 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 08:57:15,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:57:15,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 08:57:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2019-10-22 08:57:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 08:57:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-10-22 08:57:15,945 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 17 [2019-10-22 08:57:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:15,945 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2019-10-22 08:57:15,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:57:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2019-10-22 08:57:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:57:15,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:15,946 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-22 08:57:15,946 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:15,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1110583474, now seen corresponding path program 1 times [2019-10-22 08:57:15,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:15,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430344903] [2019-10-22 08:57:15,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,947 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:15,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:16,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430344903] [2019-10-22 08:57:16,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400675042] [2019-10-22 08:57:16,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:16,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-22 08:57:16,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:16,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:16,297 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:16,298 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2019-10-22 08:57:16,298 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032210736] [2019-10-22 08:57:16,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:57:16,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:16,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:57:16,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:57:16,299 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2019-10-22 08:57:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:17,034 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2019-10-22 08:57:17,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-10-22 08:57:17,035 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2019-10-22 08:57:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:17,037 INFO L225 Difference]: With dead ends: 121 [2019-10-22 08:57:17,037 INFO L226 Difference]: Without dead ends: 94 [2019-10-22 08:57:17,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=440, Invalid=1042, Unknown=0, NotChecked=0, Total=1482 [2019-10-22 08:57:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-10-22 08:57:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2019-10-22 08:57:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:57:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2019-10-22 08:57:17,056 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 27 [2019-10-22 08:57:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:17,057 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2019-10-22 08:57:17,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:57:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2019-10-22 08:57:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 08:57:17,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:17,057 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:17,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:17,261 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1311932474, now seen corresponding path program 1 times [2019-10-22 08:57:17,261 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:17,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701996347] [2019-10-22 08:57:17,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:17,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701996347] [2019-10-22 08:57:17,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791156669] [2019-10-22 08:57:17,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:17,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 08:57:17,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:17,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:17,413 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:17,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-10-22 08:57:17,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549050229] [2019-10-22 08:57:17,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:57:17,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:17,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:57:17,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:57:17,414 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 12 states. [2019-10-22 08:57:17,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:17,579 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2019-10-22 08:57:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 08:57:17,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2019-10-22 08:57:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:17,580 INFO L225 Difference]: With dead ends: 77 [2019-10-22 08:57:17,580 INFO L226 Difference]: Without dead ends: 75 [2019-10-22 08:57:17,581 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2019-10-22 08:57:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-10-22 08:57:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-10-22 08:57:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:57:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2019-10-22 08:57:17,588 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 28 [2019-10-22 08:57:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:17,589 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2019-10-22 08:57:17,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:57:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2019-10-22 08:57:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:57:17,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:17,590 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:17,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:17,790 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1348445734, now seen corresponding path program 2 times [2019-10-22 08:57:17,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:17,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429935124] [2019-10-22 08:57:17,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:17,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:17,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429935124] [2019-10-22 08:57:17,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521560711] [2019-10-22 08:57:17,914 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:17,949 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:57:17,949 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:57:17,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-22 08:57:17,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:18,060 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:18,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:18,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:18,157 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:18,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2019-10-22 08:57:18,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902169722] [2019-10-22 08:57:18,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-22 08:57:18,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:18,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-22 08:57:18,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2019-10-22 08:57:18,160 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 22 states. [2019-10-22 08:57:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:19,049 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2019-10-22 08:57:19,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 08:57:19,049 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2019-10-22 08:57:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:19,050 INFO L225 Difference]: With dead ends: 99 [2019-10-22 08:57:19,050 INFO L226 Difference]: Without dead ends: 97 [2019-10-22 08:57:19,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2019-10-22 08:57:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-10-22 08:57:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2019-10-22 08:57:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-22 08:57:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2019-10-22 08:57:19,059 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 39 [2019-10-22 08:57:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:19,060 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2019-10-22 08:57:19,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-22 08:57:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2019-10-22 08:57:19,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-22 08:57:19,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:19,061 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:19,261 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:19,261 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:19,262 INFO L82 PathProgramCache]: Analyzing trace with hash 670000306, now seen corresponding path program 2 times [2019-10-22 08:57:19,262 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:19,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607292372] [2019-10-22 08:57:19,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:19,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-22 08:57:19,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607292372] [2019-10-22 08:57:19,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44634825] [2019-10-22 08:57:19,401 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:19,443 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:57:19,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:57:19,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-22 08:57:19,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:19,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:19,599 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:19,619 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:19,620 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-10-22 08:57:19,620 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479392401] [2019-10-22 08:57:19,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-22 08:57:19,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-22 08:57:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:57:19,621 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 19 states. [2019-10-22 08:57:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:20,094 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2019-10-22 08:57:20,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:57:20,094 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2019-10-22 08:57:20,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:20,095 INFO L225 Difference]: With dead ends: 75 [2019-10-22 08:57:20,095 INFO L226 Difference]: Without dead ends: 57 [2019-10-22 08:57:20,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2019-10-22 08:57:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-22 08:57:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2019-10-22 08:57:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 08:57:20,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2019-10-22 08:57:20,101 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2019-10-22 08:57:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:20,104 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2019-10-22 08:57:20,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-22 08:57:20,105 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2019-10-22 08:57:20,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 08:57:20,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:20,105 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:20,308 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:20,308 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:20,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2085108794, now seen corresponding path program 3 times [2019-10-22 08:57:20,309 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:20,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995209812] [2019-10-22 08:57:20,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:20,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:20,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 08:57:20,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995209812] [2019-10-22 08:57:20,463 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603846906] [2019-10-22 08:57:20,464 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:20,499 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 08:57:20,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:57:20,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-22 08:57:20,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:20,666 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:20,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:20,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:57:20,733 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:20,734 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:57:20,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2019-10-22 08:57:20,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732136112] [2019-10-22 08:57:20,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-22 08:57:20,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:20,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-22 08:57:20,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2019-10-22 08:57:20,735 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 25 states. [2019-10-22 08:57:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:21,923 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2019-10-22 08:57:21,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-22 08:57:21,923 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2019-10-22 08:57:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:21,923 INFO L225 Difference]: With dead ends: 70 [2019-10-22 08:57:21,924 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:21,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=730, Invalid=3176, Unknown=0, NotChecked=0, Total=3906 [2019-10-22 08:57:21,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:21,925 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2019-10-22 08:57:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:21,926 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:21,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-22 08:57:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:21,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:22,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:57:22,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:57:22,450 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2019-10-22 08:57:22,602 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2019-10-22 08:57:22,740 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2019-10-22 08:57:22,908 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2019-10-22 08:57:22,910 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,910 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 08:57:22,910 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:57:22,910 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,910 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:57:22,911 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,911 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,911 INFO L439 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0)) (.cse3 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (= ULTIMATE.start_main_~in~0 0) .cse0 (= 0 ULTIMATE.start_main_~buf~0) .cse1 .cse2 .cse3) (and .cse0 (<= ULTIMATE.start_main_~buf~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 1) .cse3) (and (<= 3 ULTIMATE.start_main_~buf~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 .cse1 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= 0 ULTIMATE.start_main_~in~0) .cse3) (and (<= 2 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 2) .cse0 .cse1 .cse2 .cse3))) [2019-10-22 08:57:22,911 INFO L443 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,911 INFO L439 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: (let ((.cse2 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0)) (.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 2 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 2) .cse0 .cse1 .cse2 .cse3) (and .cse0 (<= ULTIMATE.start_main_~buf~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 1) .cse3) (and (= ULTIMATE.start_main_~in~0 0) .cse0 (= 0 ULTIMATE.start_main_~buf~0) .cse1 .cse2 .cse3) (and (<= 3 ULTIMATE.start_main_~buf~0) .cse0 (and (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) (<= 0 ULTIMATE.start_main_~in~0)) .cse1 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) .cse3))) [2019-10-22 08:57:22,911 INFO L443 ceAbstractionStarter]: For program point L4-6(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,911 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,912 INFO L439 ceAbstractionStarter]: At program point L4-8(lines 3 8) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0)) (.cse1 (<= ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 3 ULTIMATE.start_main_~buf~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= 0 ULTIMATE.start_main_~in~0) .cse1) (and (<= 2 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 2) .cse0 .cse2 .cse3 .cse1) (and .cse0 (<= ULTIMATE.start_main_~buf~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 1) .cse1))) [2019-10-22 08:57:22,912 INFO L443 ceAbstractionStarter]: For program point L4-9(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,912 INFO L439 ceAbstractionStarter]: At program point L4-11(lines 3 34) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~bufferlen~0 (+ ULTIMATE.start_main_~buflim~0 2))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< ULTIMATE.start_main_~bufferlen~0 ULTIMATE.start_main_~inlen~0)) (.cse2 (<= ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~buflim~0))) (or (and (<= 3 ULTIMATE.start_main_~buf~0) (<= (+ ULTIMATE.start_main_~bufferlen~0 1) ULTIMATE.start_main_~inlen~0) .cse0 .cse1 (<= (+ ULTIMATE.start_main_~buflim~0 ULTIMATE.start_main_~in~0 3) (+ ULTIMATE.start_main_~buf~0 ULTIMATE.start_main_~inlen~0)) (<= 0 ULTIMATE.start_main_~in~0) .cse2) (and (<= 2 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 2) .cse0 .cse1 .cse3 .cse2) (and (= ULTIMATE.start_main_~in~0 0) .cse0 (= 0 ULTIMATE.start_main_~buf~0) .cse3 .cse2) (and .cse0 (<= ULTIMATE.start_main_~buf~0 1) .cse1 .cse3 (<= 1 ULTIMATE.start_main_~buf~0) (= ULTIMATE.start_main_~in~0 1) .cse2))) [2019-10-22 08:57:22,912 INFO L443 ceAbstractionStarter]: For program point L4-12(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,912 INFO L439 ceAbstractionStarter]: At program point L4-14(lines 3 8) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~buf~0) (<= 0 ULTIMATE.start_main_~in~0)) [2019-10-22 08:57:22,912 INFO L443 ceAbstractionStarter]: For program point L4-15(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,912 INFO L439 ceAbstractionStarter]: At program point L4-17(lines 3 8) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~buf~0 2) ULTIMATE.start_main_~bufferlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~buf~0) (<= 0 ULTIMATE.start_main_~in~0)) [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L4-18(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L439 ceAbstractionStarter]: At program point L4-20(lines 3 8) the Hoare annotation is: (and (<= 2 ULTIMATE.start_main_~bufferlen~0) (<= (+ ULTIMATE.start_main_~buf~0 1) ULTIMATE.start_main_~bufferlen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~buf~0) (<= 0 ULTIMATE.start_main_~in~0)) [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L4-21(lines 4 6) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L446 ceAbstractionStarter]: At program point L4-23(lines 3 8) the Hoare annotation is: true [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5-2(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5-3(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5-4(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,913 INFO L443 ceAbstractionStarter]: For program point L5-5(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point L5-6(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point L30(lines 30 31) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point L5-7(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point L23-1(lines 23 34) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 34) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,914 INFO L446 ceAbstractionStarter]: At program point L41(lines 11 42) the Hoare annotation is: true [2019-10-22 08:57:22,914 INFO L446 ceAbstractionStarter]: At program point L41-1(lines 10 42) the Hoare annotation is: true [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point L25(lines 25 26) no Hoare annotation was computed. [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point L17-1(lines 11 42) no Hoare annotation was computed. [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 08:57:22,915 INFO L443 ceAbstractionStarter]: For program point L18(lines 11 42) no Hoare annotation was computed. [2019-10-22 08:57:22,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:22 BoogieIcfgContainer [2019-10-22 08:57:22,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:22,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:22,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:22,936 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:22,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:14" (3/4) ... [2019-10-22 08:57:22,939 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:22,947 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-10-22 08:57:22,948 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:57:22,997 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5813706d-40e0-47a3-8974-74e671be3575/bin/uautomizer/witness.graphml [2019-10-22 08:57:22,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:22,999 INFO L168 Benchmark]: Toolchain (without parser) took 8928.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 949.8 MB in the beginning and 977.8 MB in the end (delta: -28.0 MB). Peak memory consumption was 173.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:22,999 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:22,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:23,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:23,000 INFO L168 Benchmark]: Boogie Preprocessor took 20.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:23,000 INFO L168 Benchmark]: RCFGBuilder took 306.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:23,000 INFO L168 Benchmark]: TraceAbstraction took 8266.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 980.0 MB in the end (delta: 137.7 MB). Peak memory consumption was 193.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:23,001 INFO L168 Benchmark]: Witness Printer took 61.67 ms. Allocated memory is still 1.2 GB. Free memory was 980.0 MB in the beginning and 977.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:23,003 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 233.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 306.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8266.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 980.0 MB in the end (delta: 137.7 MB). Peak memory consumption was 193.8 MB. Max. memory is 11.5 GB. * Witness Printer took 61.67 ms. Allocated memory is still 1.2 GB. Free memory was 980.0 MB in the beginning and 977.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((((((2 <= buf && in == 2) && bufferlen == buflim + 2) && 1 == cond) && bufferlen < inlen) && buf < buflim) || ((((((bufferlen == buflim + 2 && buf <= 1) && 1 == cond) && bufferlen < inlen) && 1 <= buf) && in == 1) && buf < buflim)) || (((((in == 0 && bufferlen == buflim + 2) && 0 == buf) && 1 == cond) && bufferlen < inlen) && buf < buflim)) || (((((3 <= buf && bufferlen == buflim + 2) && bufferlen + 1 <= inlen && 0 <= in) && 1 == cond) && buflim + in + 3 <= buf + inlen) && buf < buflim) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((2 <= bufferlen && buf + 1 <= bufferlen) && !(0 == cond)) && 0 <= buf) && 0 <= in - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((buf + 2 <= bufferlen && !(0 == cond)) && 0 <= buf) && 0 <= in - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((((((3 <= buf && bufferlen + 1 <= inlen) && bufferlen == buflim + 2) && !(0 == cond)) && buflim + in + 3 <= buf + inlen) && 0 <= in) && buf <= buflim) || (((((2 <= buf && in == 2) && bufferlen == buflim + 2) && 1 == cond) && bufferlen < inlen) && buf <= buflim)) || ((((((bufferlen == buflim + 2 && buf <= 1) && 1 == cond) && bufferlen < inlen) && 1 <= buf) && in == 1) && buf <= buflim) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((((((in == 0 && bufferlen == buflim + 2) && 0 == buf) && 1 == cond) && bufferlen < inlen) && buf < buflim) || ((((((bufferlen == buflim + 2 && buf <= 1) && 1 == cond) && bufferlen < inlen) && 1 <= buf) && in == 1) && buf < buflim)) || ((((((3 <= buf && bufferlen + 1 <= inlen) && bufferlen == buflim + 2) && 1 == cond) && buflim + in + 3 <= buf + inlen) && 0 <= in) && buf < buflim)) || (((((2 <= buf && in == 2) && bufferlen == buflim + 2) && 1 == cond) && bufferlen < inlen) && buf < buflim) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((buf + 2 <= bufferlen && !(0 == cond)) && 0 <= buf) && 0 <= in - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((((((3 <= buf && bufferlen + 1 <= inlen) && bufferlen == buflim + 2) && 1 == cond) && buflim + in + 3 <= buf + inlen) && 0 <= in) && buf <= buflim) || (((((2 <= buf && in == 2) && bufferlen == buflim + 2) && 1 == cond) && bufferlen < inlen) && buf <= buflim)) || ((((in == 0 && bufferlen == buflim + 2) && 0 == buf) && bufferlen < inlen) && buf <= buflim)) || ((((((bufferlen == buflim + 2 && buf <= 1) && 1 == cond) && bufferlen < inlen) && 1 <= buf) && in == 1) && buf <= buflim) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 8 error locations. Result: SAFE, OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, HoareTripleCheckerStatistics: 329 SDtfs, 1146 SDslu, 1123 SDs, 0 SdLazy, 1556 SolverSat, 632 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 394 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 51 NumberOfFragments, 424 HoareAnnotationTreeSize, 10 FomulaSimplifications, 8160 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 1013 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 465 NumberOfCodeBlocks, 465 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 449 ConstructedInterpolants, 0 QuantifiedInterpolants, 122483 SizeOfPredicates, 41 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 41/302 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...