./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 d354f5dc1a4e4616bf2c7c7fc4888805a134a8dd ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:38:33,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:38:33,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:38:33,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:38:33,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:38:33,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:38:33,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:38:33,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:38:33,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:38:33,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:38:33,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:38:33,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:38:33,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:38:33,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:38:33,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:38:33,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:38:33,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:38:33,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:38:33,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:38:33,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:38:33,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:38:33,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:38:33,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:38:33,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:38:33,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:38:33,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:38:33,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:38:33,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:38:33,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:38:33,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:38:33,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:38:33,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:38:33,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:38:33,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:38:33,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:38:33,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:38:33,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:38:33,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:38:33,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:38:33,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:38:33,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:38:33,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:38:33,618 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:38:33,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:38:33,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:38:33,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:38:33,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:38:33,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:38:33,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:38:33,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:38:33,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:38:33,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:38:33,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:38:33,623 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/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 -> d354f5dc1a4e4616bf2c7c7fc4888805a134a8dd [2019-12-07 18:38:33,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:38:33,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:38:33,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:38:33,732 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:38:33,732 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:38:33,733 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2019-12-07 18:38:33,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/data/23133bc2a/af22fc181f76423fa26afe9c87616343/FLAG5e3e4d85f [2019-12-07 18:38:34,155 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:38:34,155 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/sv-benchmarks/c/recursive-simple/id_i10_o10-2.c [2019-12-07 18:38:34,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/data/23133bc2a/af22fc181f76423fa26afe9c87616343/FLAG5e3e4d85f [2019-12-07 18:38:34,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/data/23133bc2a/af22fc181f76423fa26afe9c87616343 [2019-12-07 18:38:34,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:38:34,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:38:34,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:38:34,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:38:34,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:38:34,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ce0d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34, skipping insertion in model container [2019-12-07 18:38:34,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:38:34,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:38:34,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:38:34,691 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:38:34,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:38:34,749 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:38:34,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34 WrapperNode [2019-12-07 18:38:34,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:38:34,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:38:34,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:38:34,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:38:34,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:38:34,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:38:34,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:38:34,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:38:34,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... [2019-12-07 18:38:34,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:38:34,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:38:34,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:38:34,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:38:34,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:38:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:38:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-12-07 18:38:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-12-07 18:38:34,919 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:38:34,919 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:38:34,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:38:34 BoogieIcfgContainer [2019-12-07 18:38:34,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:38:34,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:38:34,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:38:34,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:38:34,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:38:34" (1/3) ... [2019-12-07 18:38:34,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3f3294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:38:34, skipping insertion in model container [2019-12-07 18:38:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:38:34" (2/3) ... [2019-12-07 18:38:34,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3f3294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:38:34, skipping insertion in model container [2019-12-07 18:38:34,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:38:34" (3/3) ... [2019-12-07 18:38:34,924 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2019-12-07 18:38:34,930 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:38:34,934 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:38:34,941 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:38:34,956 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:38:34,956 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:38:34,956 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:38:34,956 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:38:34,956 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:38:34,956 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:38:34,956 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:38:34,956 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:38:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-12-07 18:38:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:38:34,969 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:34,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:34,970 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:34,974 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-12-07 18:38:34,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:34,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313209593] [2019-12-07 18:38:34,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:38:35,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313209593] [2019-12-07 18:38:35,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:38:35,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:38:35,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941642611] [2019-12-07 18:38:35,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:38:35,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:35,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:38:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:38:35,108 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-12-07 18:38:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:35,154 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-12-07 18:38:35,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:38:35,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 18:38:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:35,162 INFO L225 Difference]: With dead ends: 24 [2019-12-07 18:38:35,162 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 18:38:35,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:38:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 18:38:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 18:38:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 18:38:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 18:38:35,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-12-07 18:38:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:35,191 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 18:38:35,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:38:35,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 18:38:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:38:35,192 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:35,193 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:35,193 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:35,193 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-12-07 18:38:35,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:35,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474760672] [2019-12-07 18:38:35,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:38:35,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474760672] [2019-12-07 18:38:35,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442079793] [2019-12-07 18:38:35,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,279 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:38:35,283 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:35,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 18:38:35,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:35,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-12-07 18:38:35,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605070743] [2019-12-07 18:38:35,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:38:35,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:35,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:38:35,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:38:35,326 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 8 states. [2019-12-07 18:38:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:35,360 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-12-07 18:38:35,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:38:35,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-12-07 18:38:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:35,361 INFO L225 Difference]: With dead ends: 21 [2019-12-07 18:38:35,361 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 18:38:35,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:38:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 18:38:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 18:38:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 18:38:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 18:38:35,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2019-12-07 18:38:35,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:35,365 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 18:38:35,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:38:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 18:38:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 18:38:35,366 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:35,366 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:35,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:35,568 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1824240471, now seen corresponding path program 2 times [2019-12-07 18:38:35,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:35,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599605249] [2019-12-07 18:38:35,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 18:38:35,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599605249] [2019-12-07 18:38:35,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737307888] [2019-12-07 18:38:35,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:35,694 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:38:35,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:35,694 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:38:35,695 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 18:38:35,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:35,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-12-07 18:38:35,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610823055] [2019-12-07 18:38:35,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 18:38:35,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 18:38:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:38:35,717 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2019-12-07 18:38:35,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:35,758 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-12-07 18:38:35,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 18:38:35,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-12-07 18:38:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:35,760 INFO L225 Difference]: With dead ends: 24 [2019-12-07 18:38:35,760 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 18:38:35,760 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:38:35,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 18:38:35,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 18:38:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 18:38:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-12-07 18:38:35,765 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2019-12-07 18:38:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:35,765 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-12-07 18:38:35,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 18:38:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-12-07 18:38:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:38:35,766 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:35,766 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:35,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:35,967 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:35,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash -28473709, now seen corresponding path program 3 times [2019-12-07 18:38:35,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:35,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679833442] [2019-12-07 18:38:35,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 18:38:36,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679833442] [2019-12-07 18:38:36,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844809262] [2019-12-07 18:38:36,085 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:36,107 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 18:38:36,108 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:36,108 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:38:36,109 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-07 18:38:36,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:36,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2019-12-07 18:38:36,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278688774] [2019-12-07 18:38:36,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:38:36,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:36,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:38:36,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:38:36,132 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2019-12-07 18:38:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:36,180 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-12-07 18:38:36,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:38:36,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2019-12-07 18:38:36,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:36,182 INFO L225 Difference]: With dead ends: 27 [2019-12-07 18:38:36,182 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 18:38:36,183 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:38:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 18:38:36,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 18:38:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 18:38:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-12-07 18:38:36,188 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2019-12-07 18:38:36,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:36,188 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-12-07 18:38:36,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:38:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-12-07 18:38:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 18:38:36,189 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:36,189 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:36,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:36,390 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:36,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894167, now seen corresponding path program 4 times [2019-12-07 18:38:36,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:36,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872573813] [2019-12-07 18:38:36,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-07 18:38:36,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872573813] [2019-12-07 18:38:36,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146927461] [2019-12-07 18:38:36,504 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:36,522 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:38:36,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:36,522 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 18:38:36,524 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-12-07 18:38:36,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:36,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-12-07 18:38:36,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087982281] [2019-12-07 18:38:36,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 18:38:36,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:36,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 18:38:36,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:38:36,547 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 11 states. [2019-12-07 18:38:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:36,595 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-12-07 18:38:36,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:38:36,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2019-12-07 18:38:36,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:36,596 INFO L225 Difference]: With dead ends: 30 [2019-12-07 18:38:36,596 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 18:38:36,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:38:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 18:38:36,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 18:38:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:38:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-12-07 18:38:36,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2019-12-07 18:38:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:36,602 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-12-07 18:38:36,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 18:38:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-12-07 18:38:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-07 18:38:36,603 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:36,603 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:36,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:36,805 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -687460973, now seen corresponding path program 5 times [2019-12-07 18:38:36,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:36,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457339170] [2019-12-07 18:38:36,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-07 18:38:36,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457339170] [2019-12-07 18:38:36,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068053913] [2019-12-07 18:38:36,946 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/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 [2019-12-07 18:38:36,969 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 18:38:36,969 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:36,970 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 18:38:36,972 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-12-07 18:38:37,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:37,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2019-12-07 18:38:37,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110347133] [2019-12-07 18:38:37,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:38:37,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:38:37,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:38:37,003 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 12 states. [2019-12-07 18:38:37,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:37,060 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-12-07 18:38:37,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 18:38:37,060 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2019-12-07 18:38:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:37,061 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:38:37,061 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:38:37,062 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:38:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:38:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:38:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:38:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-12-07 18:38:37,066 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2019-12-07 18:38:37,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:37,066 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-12-07 18:38:37,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:38:37,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-12-07 18:38:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-12-07 18:38:37,067 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:37,067 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:37,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:37,269 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:37,270 INFO L82 PathProgramCache]: Analyzing trace with hash 547744169, now seen corresponding path program 6 times [2019-12-07 18:38:37,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:37,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610649346] [2019-12-07 18:38:37,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-12-07 18:38:37,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610649346] [2019-12-07 18:38:37,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501331841] [2019-12-07 18:38:37,497 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:37,520 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 18:38:37,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:37,521 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 18:38:37,522 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-12-07 18:38:37,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:37,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-12-07 18:38:37,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190137632] [2019-12-07 18:38:37,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 18:38:37,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:37,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 18:38:37,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:38:37,551 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states. [2019-12-07 18:38:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:37,610 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2019-12-07 18:38:37,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 18:38:37,611 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2019-12-07 18:38:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:37,612 INFO L225 Difference]: With dead ends: 36 [2019-12-07 18:38:37,612 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 18:38:37,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=250, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:38:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 18:38:37,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-07 18:38:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 18:38:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2019-12-07 18:38:37,618 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 45 [2019-12-07 18:38:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:37,618 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2019-12-07 18:38:37,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 18:38:37,618 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2019-12-07 18:38:37,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-12-07 18:38:37,620 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:37,620 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:37,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:37,821 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:37,822 INFO L82 PathProgramCache]: Analyzing trace with hash -247823213, now seen corresponding path program 7 times [2019-12-07 18:38:37,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:37,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880601227] [2019-12-07 18:38:37,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-12-07 18:38:37,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880601227] [2019-12-07 18:38:37,992 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889350668] [2019-12-07 18:38:37,992 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,016 INFO L264 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 18:38:38,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-12-07 18:38:38,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:38,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2019-12-07 18:38:38,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545695774] [2019-12-07 18:38:38,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:38:38,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:38:38,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:38:38,052 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 14 states. [2019-12-07 18:38:38,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:38,127 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-12-07 18:38:38,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 18:38:38,128 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2019-12-07 18:38:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:38,129 INFO L225 Difference]: With dead ends: 39 [2019-12-07 18:38:38,129 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 18:38:38,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=303, Unknown=0, NotChecked=0, Total=462 [2019-12-07 18:38:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 18:38:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-12-07 18:38:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 18:38:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-12-07 18:38:38,134 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 51 [2019-12-07 18:38:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:38,135 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2019-12-07 18:38:38,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:38:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2019-12-07 18:38:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 18:38:38,136 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:38,136 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:38,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:38,337 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:38,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1818636247, now seen corresponding path program 8 times [2019-12-07 18:38:38,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:38,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846948452] [2019-12-07 18:38:38,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-12-07 18:38:38,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846948452] [2019-12-07 18:38:38,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231729748] [2019-12-07 18:38:38,488 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:38,512 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:38:38,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:38,513 INFO L264 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 18:38:38,516 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-12-07 18:38:38,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:38,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-12-07 18:38:38,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404810761] [2019-12-07 18:38:38,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 18:38:38,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:38,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 18:38:38,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-12-07 18:38:38,549 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 15 states. [2019-12-07 18:38:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:38,627 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2019-12-07 18:38:38,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 18:38:38,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2019-12-07 18:38:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:38,628 INFO L225 Difference]: With dead ends: 42 [2019-12-07 18:38:38,628 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 18:38:38,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2019-12-07 18:38:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 18:38:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-12-07 18:38:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 18:38:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2019-12-07 18:38:38,632 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 57 [2019-12-07 18:38:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:38,633 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2019-12-07 18:38:38,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 18:38:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2019-12-07 18:38:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 18:38:38,634 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:38,634 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:38,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:38,834 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash -2055304301, now seen corresponding path program 9 times [2019-12-07 18:38:38,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:38,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911909003] [2019-12-07 18:38:38,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-12-07 18:38:38,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911909003] [2019-12-07 18:38:38,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495372205] [2019-12-07 18:38:38,998 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:39,032 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 18:38:39,032 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:39,033 INFO L264 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 22 conjunts are in the unsatisfiable core [2019-12-07 18:38:39,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-12-07 18:38:39,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:39,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2019-12-07 18:38:39,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113905491] [2019-12-07 18:38:39,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 18:38:39,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:39,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:38:39,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:38:39,069 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 16 states. [2019-12-07 18:38:39,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:39,152 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2019-12-07 18:38:39,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:38:39,152 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2019-12-07 18:38:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:39,153 INFO L225 Difference]: With dead ends: 45 [2019-12-07 18:38:39,153 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 18:38:39,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=226, Invalid=424, Unknown=0, NotChecked=0, Total=650 [2019-12-07 18:38:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 18:38:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-12-07 18:38:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 18:38:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-12-07 18:38:39,158 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 63 [2019-12-07 18:38:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:39,158 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-12-07 18:38:39,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 18:38:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-12-07 18:38:39,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-07 18:38:39,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:39,159 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:39,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:39,360 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1172322647, now seen corresponding path program 10 times [2019-12-07 18:38:39,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:39,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126689872] [2019-12-07 18:38:39,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-12-07 18:38:39,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126689872] [2019-12-07 18:38:39,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693691612] [2019-12-07 18:38:39,872 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:39,901 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:38:39,902 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:39,903 INFO L264 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 18:38:39,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-12-07 18:38:39,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:39,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2019-12-07 18:38:39,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502220025] [2019-12-07 18:38:39,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-07 18:38:39,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:39,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-07 18:38:39,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:38:39,939 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 25 states. [2019-12-07 18:38:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:40,109 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2019-12-07 18:38:40,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 18:38:40,109 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 69 [2019-12-07 18:38:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:40,110 INFO L225 Difference]: With dead ends: 48 [2019-12-07 18:38:40,110 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 18:38:40,110 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:38:40,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 18:38:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-12-07 18:38:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-12-07 18:38:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2019-12-07 18:38:40,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 69 [2019-12-07 18:38:40,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:40,114 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2019-12-07 18:38:40,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-07 18:38:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2019-12-07 18:38:40,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 18:38:40,115 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:40,115 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:38:40,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:40,317 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:40,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1452916077, now seen corresponding path program 11 times [2019-12-07 18:38:40,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:40,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883328922] [2019-12-07 18:38:40,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 165 proven. 22 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-12-07 18:38:40,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883328922] [2019-12-07 18:38:40,662 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081474148] [2019-12-07 18:38:40,662 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:40,695 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 18:38:40,695 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:40,696 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjunts are in the unsatisfiable core [2019-12-07 18:38:40,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-12-07 18:38:40,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:38:40,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 18 [2019-12-07 18:38:40,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306567769] [2019-12-07 18:38:40,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 18:38:40,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:38:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:38:40,739 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 16 states. [2019-12-07 18:38:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:40,878 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2019-12-07 18:38:40,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 18:38:40,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2019-12-07 18:38:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:40,879 INFO L225 Difference]: With dead ends: 44 [2019-12-07 18:38:40,879 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:38:40,880 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870 [2019-12-07 18:38:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:38:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:38:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:38:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:38:40,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2019-12-07 18:38:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:40,881 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:38:40,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 18:38:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:38:40,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:38:41,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:41,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 18:38:41,137 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 18:38:41,138 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 18:38:41,138 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 18:38:41,139 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-12-07 18:38:41,139 INFO L246 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2019-12-07 18:38:41,139 INFO L246 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2019-12-07 18:38:41,140 INFO L242 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= ULTIMATE.start_main_~input~0 10) (<= 10 ULTIMATE.start_main_~input~0)) [2019-12-07 18:38:41,140 INFO L246 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2019-12-07 18:38:41,140 INFO L246 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2019-12-07 18:38:41,140 INFO L246 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2019-12-07 18:38:41,141 INFO L246 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2019-12-07 18:38:41,141 INFO L249 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2019-12-07 18:38:41,141 INFO L242 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2019-12-07 18:38:41,142 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 18:38:41,142 INFO L246 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-12-07 18:38:41,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:38:41 BoogieIcfgContainer [2019-12-07 18:38:41,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:38:41,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:38:41,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:38:41,155 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:38:41,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:38:34" (3/4) ... [2019-12-07 18:38:41,163 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:38:41,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-12-07 18:38:41,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 18:38:41,178 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 18:38:41,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_95064c0b-6cf6-479d-8e28-720a5df269ce/bin/uautomizer/witness.graphml [2019-12-07 18:38:41,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:38:41,208 INFO L168 Benchmark]: Toolchain (without parser) took 6657.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 941.5 MB in the beginning and 1.0 GB in the end (delta: -105.2 MB). Peak memory consumption was 50.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,208 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 957.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:38:41,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,209 INFO L168 Benchmark]: Boogie Preprocessor took 12.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,210 INFO L168 Benchmark]: RCFGBuilder took 133.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,210 INFO L168 Benchmark]: TraceAbstraction took 6232.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,210 INFO L168 Benchmark]: Witness Printer took 52.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:41,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 957.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 133.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6232.98 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 35.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 11.5 GB. * Witness Printer took 52.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 6.1s, OverallIterations: 12, TraceHistogramMax: 12, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 151 SDtfs, 252 SDslu, 945 SDs, 0 SdLazy, 713 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 821 GetRequests, 620 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=11, 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 999 NumberOfCodeBlocks, 994 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 976 ConstructedInterpolants, 0 QuantifiedInterpolants, 141088 SizeOfPredicates, 77 NumberOfNonLiveVariables, 1157 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 1936/3168 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...