./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37ab50eb35f71bc9dfb317209ba2fdf85cde6398 ............................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37ab50eb35f71bc9dfb317209ba2fdf85cde6398 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:37:46,223 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:37:46,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:37:46,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:37:46,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:37:46,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:37:46,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:37:46,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:37:46,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:37:46,238 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:37:46,239 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:37:46,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:37:46,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:37:46,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:37:46,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:37:46,241 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:37:46,242 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:37:46,243 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:37:46,245 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:37:46,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:37:46,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:37:46,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:37:46,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:37:46,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:37:46,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:37:46,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:37:46,251 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:37:46,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:37:46,252 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:37:46,253 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:37:46,253 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:37:46,254 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:37:46,254 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:37:46,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:37:46,255 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:37:46,256 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:37:46,256 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:37:46,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:37:46,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:37:46,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:37:46,269 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:37:46,269 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:37:46,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:37:46,269 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:37:46,269 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:37:46,269 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:37:46,270 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:37:46,270 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:37:46,270 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:37:46,270 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:37:46,271 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:37:46,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:37:46,272 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:37:46,272 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:37:46,272 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:37:46,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:37:46,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:37:46,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:37:46,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:37:46,273 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:37:46,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:37:46,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:37:46,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:37:46,274 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan 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 -> Taipan 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 -> 37ab50eb35f71bc9dfb317209ba2fdf85cde6398 [2018-11-23 13:37:46,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:37:46,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:37:46,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:37:46,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:37:46,315 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:37:46,315 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-11-23 13:37:46,369 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/ee791b78e/1c18bde185444d658459d27be2a9b8bb/FLAG571c6d383 [2018-11-23 13:37:46,749 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:37:46,749 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-11-23 13:37:46,760 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/ee791b78e/1c18bde185444d658459d27be2a9b8bb/FLAG571c6d383 [2018-11-23 13:37:47,143 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/ee791b78e/1c18bde185444d658459d27be2a9b8bb [2018-11-23 13:37:47,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:37:47,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:37:47,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:37:47,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:37:47,150 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:37:47,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ab206d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47, skipping insertion in model container [2018-11-23 13:37:47,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:37:47,193 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:37:47,433 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:37:47,439 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:37:47,513 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:37:47,545 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:37:47,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47 WrapperNode [2018-11-23 13:37:47,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:37:47,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:37:47,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:37:47,546 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:37:47,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:37:47,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:37:47,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:37:47,577 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:37:47,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... [2018-11-23 13:37:47,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:37:47,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:37:47,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:37:47,595 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:37:47,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/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 [2018-11-23 13:37:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:37:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 13:37:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 13:37:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-23 13:37:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:37:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:37:47,638 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 13:37:47,847 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:37:47,847 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 13:37:47,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:47 BoogieIcfgContainer [2018-11-23 13:37:47,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:37:47,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:37:47,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:37:47,850 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:37:47,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:37:47" (1/3) ... [2018-11-23 13:37:47,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af8dafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:37:47, skipping insertion in model container [2018-11-23 13:37:47,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:47" (2/3) ... [2018-11-23 13:37:47,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af8dafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:37:47, skipping insertion in model container [2018-11-23 13:37:47,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:47" (3/3) ... [2018-11-23 13:37:47,852 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-11-23 13:37:47,876 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,876 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,876 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,877 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,877 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,877 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,878 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,878 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,878 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,878 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,879 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,879 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,879 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,879 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,880 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,880 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,880 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,881 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,881 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,881 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:47,890 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 13:37:47,891 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:37:47,898 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:37:47,908 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:37:47,932 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:37:47,933 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:37:47,933 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:37:47,933 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:37:47,933 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:37:47,933 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:37:47,933 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:37:47,933 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:37:47,940 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-23 13:37:47,986 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-23 13:37:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-23 13:37:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 13:37:47,995 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:47,996 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:47,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:48,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:48,003 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-23 13:37:48,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:37:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:48,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,047 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:37:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:48,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:48,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:37:48,195 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:37:48,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:37:48,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:37:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:37:48,215 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-23 13:37:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:48,307 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-11-23 13:37:48,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:37:48,308 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 13:37:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:48,321 INFO L225 Difference]: With dead ends: 1411 [2018-11-23 13:37:48,322 INFO L226 Difference]: Without dead ends: 322 [2018-11-23 13:37:48,323 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-11-23 13:37:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-11-23 13:37:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-11-23 13:37:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-11-23 13:37:48,368 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-11-23 13:37:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:48,369 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-11-23 13:37:48,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:37:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-11-23 13:37:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 13:37:48,370 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:48,370 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:48,370 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:48,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-11-23 13:37:48,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:37:48,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:48,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,376 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:37:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:48,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:48,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:37:48,442 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:37:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:37:48,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:37:48,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:37:48,444 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-11-23 13:37:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:48,480 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-11-23 13:37:48,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:37:48,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 13:37:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:48,483 INFO L225 Difference]: With dead ends: 411 [2018-11-23 13:37:48,483 INFO L226 Difference]: Without dead ends: 290 [2018-11-23 13:37:48,483 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-23 13:37:48,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-23 13:37:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-23 13:37:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-23 13:37:48,496 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-23 13:37:48,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:48,496 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-23 13:37:48,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:37:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-23 13:37:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:37:48,497 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:48,497 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:48,498 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:48,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-11-23 13:37:48,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:37:48,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:48,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,501 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:37:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:48,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:48,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 13:37:48,578 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:37:48,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:37:48,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:37:48,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:48,579 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-23 13:37:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:48,648 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-23 13:37:48,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:37:48,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 13:37:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:48,650 INFO L225 Difference]: With dead ends: 437 [2018-11-23 13:37:48,650 INFO L226 Difference]: Without dead ends: 309 [2018-11-23 13:37:48,651 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 13:37:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-11-23 13:37:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-11-23 13:37:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-11-23 13:37:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-11-23 13:37:48,663 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-11-23 13:37:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:48,663 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-11-23 13:37:48,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:37:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-11-23 13:37:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:37:48,664 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:48,665 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:48,665 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:48,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-11-23 13:37:48,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:37:48,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:48,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:37:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:48,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:48,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 13:37:48,777 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:37:48,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:37:48,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:37:48,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:48,778 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-11-23 13:37:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:48,844 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-11-23 13:37:48,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:37:48,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 13:37:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:48,845 INFO L225 Difference]: With dead ends: 456 [2018-11-23 13:37:48,845 INFO L226 Difference]: Without dead ends: 319 [2018-11-23 13:37:48,846 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 13:37:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-23 13:37:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-23 13:37:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 13:37:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-23 13:37:48,852 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-23 13:37:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:48,853 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-23 13:37:48,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:37:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-23 13:37:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:37:48,854 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:48,854 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:48,855 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:48,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:48,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-23 13:37:48,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:37:48,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:37:48,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:37:48,858 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:37:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:48,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:37:48,937 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 13:37:48,938 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:169) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-23 13:37:48,941 INFO L168 Benchmark]: Toolchain (without parser) took 1795.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 956.4 MB in the beginning and 1.0 GB in the end (delta: -44.5 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. [2018-11-23 13:37:48,942 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:37:48,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:37:48,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:37:48,944 INFO L168 Benchmark]: Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:37:48,945 INFO L168 Benchmark]: RCFGBuilder took 252.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-23 13:37:48,945 INFO L168 Benchmark]: TraceAbstraction took 1092.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 124.8 MB). Peak memory consumption was 124.8 MB. Max. memory is 11.5 GB. [2018-11-23 13:37:48,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 398.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 252.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1092.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 124.8 MB). Peak memory consumption was 124.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: AbsInt only supports BoogieIcfgLocations and Codeblocks at the moment: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 13:37:50,501 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:37:50,503 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:37:50,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:37:50,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:37:50,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:37:50,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:37:50,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:37:50,518 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:37:50,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:37:50,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:37:50,520 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:37:50,521 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:37:50,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:37:50,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:37:50,523 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:37:50,524 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:37:50,526 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:37:50,528 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:37:50,529 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:37:50,531 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:37:50,532 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:37:50,534 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:37:50,534 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:37:50,534 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:37:50,535 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:37:50,536 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:37:50,536 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:37:50,537 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:37:50,539 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:37:50,539 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:37:50,540 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:37:50,540 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:37:50,540 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:37:50,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:37:50,541 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:37:50,542 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 13:37:50,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:37:50,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:37:50,556 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:37:50,556 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:37:50,556 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:37:50,556 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:37:50,557 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:37:50,557 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:37:50,557 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:37:50,557 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:37:50,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:37:50,559 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:37:50,559 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:37:50,559 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:37:50,559 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:37:50,560 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:37:50,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:37:50,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:37:50,561 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:37:50,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:37:50,561 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:37:50,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:37:50,562 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 13:37:50,563 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 13:37:50,563 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan 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 -> Taipan 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 -> 37ab50eb35f71bc9dfb317209ba2fdf85cde6398 [2018-11-23 13:37:50,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:37:50,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:37:50,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:37:50,612 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:37:50,612 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:37:50,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-11-23 13:37:50,659 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/7a9bf061f/aef94afac700424e969eb933271c286f/FLAGeb8966f70 [2018-11-23 13:37:51,038 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:37:51,039 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-11-23 13:37:51,048 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/7a9bf061f/aef94afac700424e969eb933271c286f/FLAGeb8966f70 [2018-11-23 13:37:51,421 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/data/7a9bf061f/aef94afac700424e969eb933271c286f [2018-11-23 13:37:51,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:37:51,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:37:51,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:37:51,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:37:51,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:37:51,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2da74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51, skipping insertion in model container [2018-11-23 13:37:51,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:37:51,473 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:37:51,741 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:37:51,753 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:37:51,789 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:37:51,843 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:37:51,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51 WrapperNode [2018-11-23 13:37:51,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:37:51,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:37:51,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:37:51,845 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:37:51,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:37:51,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:37:51,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:37:51,923 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:37:51,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... [2018-11-23 13:37:51,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:37:51,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:37:51,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:37:51,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:37:51,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/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 [2018-11-23 13:37:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 13:37:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 13:37:51,988 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 13:37:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 13:37:51,989 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 13:37:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-23 13:37:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 13:37:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 13:37:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-23 13:37:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:37:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:37:51,992 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 13:37:52,206 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:37:52,206 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 13:37:52,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:52 BoogieIcfgContainer [2018-11-23 13:37:52,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:37:52,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:37:52,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:37:52,209 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:37:52,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:37:51" (1/3) ... [2018-11-23 13:37:52,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c502b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:37:52, skipping insertion in model container [2018-11-23 13:37:52,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:51" (2/3) ... [2018-11-23 13:37:52,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c502b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:37:52, skipping insertion in model container [2018-11-23 13:37:52,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:52" (3/3) ... [2018-11-23 13:37:52,212 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-11-23 13:37:52,237 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,238 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,238 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,238 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,238 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,239 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,239 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,239 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,239 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,239 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,240 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,240 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,240 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,240 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,241 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,244 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,245 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,245 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,245 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,245 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,245 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,246 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,246 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 13:37:52,251 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 13:37:52,251 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:37:52,257 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:37:52,268 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:37:52,285 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:37:52,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:37:52,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:37:52,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:37:52,286 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:37:52,286 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:37:52,286 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:37:52,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:37:52,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:37:52,293 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-23 13:37:52,338 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-23 13:37:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-23 13:37:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 13:37:52,348 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:52,349 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:52,351 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:52,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-23 13:37:52,361 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:52,361 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:52,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:52,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:52,534 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:37:52,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:52,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:37:52,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:37:52,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:37:52,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:37:52,557 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-23 13:37:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:52,675 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-11-23 13:37:52,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:37:52,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-23 13:37:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:52,691 INFO L225 Difference]: With dead ends: 1777 [2018-11-23 13:37:52,691 INFO L226 Difference]: Without dead ends: 499 [2018-11-23 13:37:52,692 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-23 13:37:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-11-23 13:37:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-11-23 13:37:52,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-11-23 13:37:52,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-11-23 13:37:52,745 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-11-23 13:37:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:52,746 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-11-23 13:37:52,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:37:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-11-23 13:37:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 13:37:52,747 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:52,748 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:52,748 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:52,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-11-23 13:37:52,749 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:52,749 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:52,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:52,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:52,836 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:37:52,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:52,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:37:52,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:37:52,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:37:52,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:37:52,839 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-11-23 13:37:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:52,920 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-11-23 13:37:52,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:37:52,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 13:37:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:52,923 INFO L225 Difference]: With dead ends: 464 [2018-11-23 13:37:52,923 INFO L226 Difference]: Without dead ends: 343 [2018-11-23 13:37:52,924 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-11-23 13:37:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-11-23 13:37:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 13:37:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-11-23 13:37:52,939 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-11-23 13:37:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:52,940 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-11-23 13:37:52,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:37:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-11-23 13:37:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 13:37:52,941 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:52,941 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:52,941 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:52,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:52,943 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-11-23 13:37:52,943 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:52,944 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:52,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:53,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,031 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:37:53,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:53,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 13:37:53,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 13:37:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 13:37:53,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 13:37:53,034 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-11-23 13:37:53,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:53,093 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-11-23 13:37:53,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 13:37:53,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-23 13:37:53,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:53,095 INFO L225 Difference]: With dead ends: 420 [2018-11-23 13:37:53,096 INFO L226 Difference]: Without dead ends: 290 [2018-11-23 13:37:53,096 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:53,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-23 13:37:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-23 13:37:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-23 13:37:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-23 13:37:53,106 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-23 13:37:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:53,107 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-23 13:37:53,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 13:37:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-23 13:37:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:37:53,108 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:53,108 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:53,108 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:53,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:53,109 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-11-23 13:37:53,109 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:53,109 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:53,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:53,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,223 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:37:53,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:53,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 13:37:53,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:37:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:37:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:53,226 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-23 13:37:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:53,339 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-23 13:37:53,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:37:53,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 13:37:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:53,342 INFO L225 Difference]: With dead ends: 437 [2018-11-23 13:37:53,342 INFO L226 Difference]: Without dead ends: 309 [2018-11-23 13:37:53,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 13:37:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-11-23 13:37:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-11-23 13:37:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-11-23 13:37:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-11-23 13:37:53,352 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-11-23 13:37:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:53,353 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-11-23 13:37:53,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:37:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-11-23 13:37:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-23 13:37:53,354 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:53,354 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:53,355 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:53,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:53,355 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-11-23 13:37:53,356 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:53,356 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:53,389 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 13:37:53,432 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-23 13:37:53,432 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:37:53,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 13:37:53,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:37:53,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 13:37:53,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 13:37:53,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 13:37:53,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 13:37:53,479 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-11-23 13:37:53,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:53,554 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-11-23 13:37:53,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 13:37:53,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-23 13:37:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:53,558 INFO L225 Difference]: With dead ends: 456 [2018-11-23 13:37:53,558 INFO L226 Difference]: Without dead ends: 319 [2018-11-23 13:37:53,558 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 13:37:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-23 13:37:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-23 13:37:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-23 13:37:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-23 13:37:53,569 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-23 13:37:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:53,570 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-23 13:37:53,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 13:37:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-23 13:37:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:37:53,571 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:53,571 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:53,571 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:53,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:53,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-23 13:37:53,572 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:53,572 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:53,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:37:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:53,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:37:53,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:37:53,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:53,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,876 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:53,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:37:53,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-23 13:37:53,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 13:37:53,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 13:37:53,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:37:53,918 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-11-23 13:37:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:54,385 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-11-23 13:37:54,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 13:37:54,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-11-23 13:37:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:54,388 INFO L225 Difference]: With dead ends: 760 [2018-11-23 13:37:54,388 INFO L226 Difference]: Without dead ends: 383 [2018-11-23 13:37:54,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2018-11-23 13:37:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-11-23 13:37:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-11-23 13:37:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-11-23 13:37:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-11-23 13:37:54,395 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-11-23 13:37:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:54,396 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-11-23 13:37:54,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 13:37:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-11-23 13:37:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-23 13:37:54,397 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:54,397 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:54,397 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:54,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:54,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-11-23 13:37:54,398 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:54,398 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:54,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:54,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:54,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:54,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:37:54,605 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:37:54,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:54,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:54,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:54,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:37:54,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-23 13:37:54,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-23 13:37:54,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-23 13:37:54,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-23 13:37:54,672 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-11-23 13:37:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:55,154 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-11-23 13:37:55,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 13:37:55,155 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-11-23 13:37:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:55,156 INFO L225 Difference]: With dead ends: 824 [2018-11-23 13:37:55,156 INFO L226 Difference]: Without dead ends: 447 [2018-11-23 13:37:55,156 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2018-11-23 13:37:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-11-23 13:37:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-11-23 13:37:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-23 13:37:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-23 13:37:55,164 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-11-23 13:37:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:55,164 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-23 13:37:55,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-23 13:37:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-23 13:37:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-23 13:37:55,165 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:55,165 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:55,165 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:55,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-11-23 13:37:55,166 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:55,166 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:55,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:55,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:37:55,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:37:55,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:37:55,571 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:37:55,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:37:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:37:55,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:37:55,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 13:37:55,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:37:55,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-11-23 13:37:55,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 13:37:55,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 13:37:55,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-23 13:37:55,704 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-11-23 13:37:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:37:57,045 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-11-23 13:37:57,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-23 13:37:57,045 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-11-23 13:37:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:37:57,047 INFO L225 Difference]: With dead ends: 1302 [2018-11-23 13:37:57,047 INFO L226 Difference]: Without dead ends: 643 [2018-11-23 13:37:57,048 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2018-11-23 13:37:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-11-23 13:37:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-11-23 13:37:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-23 13:37:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-23 13:37:57,058 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-11-23 13:37:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:37:57,058 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-23 13:37:57,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 13:37:57,059 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-23 13:37:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-23 13:37:57,059 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:37:57,060 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:37:57,060 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:37:57,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:37:57,060 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-11-23 13:37:57,060 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:37:57,061 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:37:57,090 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 13:37:57,193 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 13:37:57,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:37:57,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:57,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:57,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:37:57,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:37:57,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 13:37:57,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 13:37:57,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:37:57,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:37:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:57,980 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:37:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:37:58,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:37:58,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2018-11-23 13:37:58,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-23 13:37:58,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-23 13:37:58,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2018-11-23 13:37:58,058 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 25 states. [2018-11-23 13:38:00,208 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-11-23 13:38:00,443 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-11-23 13:38:00,669 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2018-11-23 13:38:00,909 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2018-11-23 13:38:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:38:01,970 INFO L93 Difference]: Finished difference Result 1718 states and 4109 transitions. [2018-11-23 13:38:01,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-23 13:38:01,971 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-11-23 13:38:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:38:01,974 INFO L225 Difference]: With dead ends: 1718 [2018-11-23 13:38:01,974 INFO L226 Difference]: Without dead ends: 767 [2018-11-23 13:38:01,975 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=758, Invalid=2434, Unknown=0, NotChecked=0, Total=3192 [2018-11-23 13:38:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-11-23 13:38:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2018-11-23 13:38:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2018-11-23 13:38:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1668 transitions. [2018-11-23 13:38:01,987 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1668 transitions. Word has length 57 [2018-11-23 13:38:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:38:01,988 INFO L480 AbstractCegarLoop]: Abstraction has 767 states and 1668 transitions. [2018-11-23 13:38:01,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-23 13:38:01,988 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1668 transitions. [2018-11-23 13:38:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-23 13:38:01,989 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:38:01,989 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:38:01,990 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:38:01,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:38:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash 690225639, now seen corresponding path program 3 times [2018-11-23 13:38:01,990 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:38:01,990 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:38:02,019 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 13:38:02,482 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 13:38:02,482 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:38:02,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:38:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:02,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:38:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:03,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:38:03,415 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:38:03,424 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 13:38:03,521 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 13:38:03,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:38:03,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:38:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:03,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:38:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:03,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:38:03,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17] total 31 [2018-11-23 13:38:03,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-23 13:38:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-23 13:38:03,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2018-11-23 13:38:03,580 INFO L87 Difference]: Start difference. First operand 767 states and 1668 transitions. Second operand 31 states. [2018-11-23 13:38:04,275 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-11-23 13:38:05,364 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-11-23 13:38:05,859 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2018-11-23 13:38:06,350 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2018-11-23 13:38:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:38:08,097 INFO L93 Difference]: Finished difference Result 1894 states and 4461 transitions. [2018-11-23 13:38:08,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-23 13:38:08,097 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2018-11-23 13:38:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:38:08,100 INFO L225 Difference]: With dead ends: 1894 [2018-11-23 13:38:08,100 INFO L226 Difference]: Without dead ends: 943 [2018-11-23 13:38:08,101 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=891, Invalid=3269, Unknown=0, NotChecked=0, Total=4160 [2018-11-23 13:38:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2018-11-23 13:38:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 623. [2018-11-23 13:38:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-11-23 13:38:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1380 transitions. [2018-11-23 13:38:08,111 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1380 transitions. Word has length 69 [2018-11-23 13:38:08,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:38:08,111 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 1380 transitions. [2018-11-23 13:38:08,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-23 13:38:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1380 transitions. [2018-11-23 13:38:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-23 13:38:08,112 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:38:08,113 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:38:08,113 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:38:08,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:38:08,113 INFO L82 PathProgramCache]: Analyzing trace with hash -313198963, now seen corresponding path program 4 times [2018-11-23 13:38:08,113 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 13:38:08,113 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 13:38:08,129 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 13:38:08,222 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 13:38:08,222 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:38:08,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:38:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:08,512 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:38:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:09,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 13:38:09,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 13:38:09,623 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 13:38:09,657 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 13:38:09,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 13:38:09,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:38:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:09,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 13:38:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:38:09,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 13:38:09,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23] total 44 [2018-11-23 13:38:09,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-23 13:38:09,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-23 13:38:09,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 13:38:09,720 INFO L87 Difference]: Start difference. First operand 623 states and 1380 transitions. Second operand 44 states. [2018-11-23 13:38:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:38:10,543 INFO L93 Difference]: Finished difference Result 2323 states and 4537 transitions. [2018-11-23 13:38:10,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-23 13:38:10,543 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 101 [2018-11-23 13:38:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:38:10,544 INFO L225 Difference]: With dead ends: 2323 [2018-11-23 13:38:10,544 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:38:10,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=516, Invalid=3516, Unknown=0, NotChecked=0, Total=4032 [2018-11-23 13:38:10,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:38:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:38:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:38:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:38:10,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2018-11-23 13:38:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:38:10,545 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:38:10,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-23 13:38:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:38:10,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:38:10,548 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 13:38:10,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:38:10 BasicIcfg [2018-11-23 13:38:10,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:38:10,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:38:10,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:38:10,550 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:38:10,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:52" (3/4) ... [2018-11-23 13:38:10,553 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:38:10,557 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-11-23 13:38:10,557 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-11-23 13:38:10,560 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 13:38:10,560 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 13:38:10,560 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:38:10,585 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad18e903-9ce5-4c75-a4eb-e1889f213b6d/bin-2019/utaipan/witness.graphml [2018-11-23 13:38:10,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:38:10,586 INFO L168 Benchmark]: Toolchain (without parser) took 19161.69 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 347.1 MB). Free memory was 944.4 MB in the beginning and 999.8 MB in the end (delta: -55.4 MB). Peak memory consumption was 291.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,587 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:38:10,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.80 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 912.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 912.2 MB in the beginning and 1.1 GB in the end (delta: -230.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,588 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:38:10,588 INFO L168 Benchmark]: RCFGBuilder took 260.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,588 INFO L168 Benchmark]: TraceAbstraction took 18342.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 192.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.1 MB). Peak memory consumption was 304.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,589 INFO L168 Benchmark]: Witness Printer took 35.88 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:38:10,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 418.80 ms. Allocated memory is still 1.0 GB. Free memory was 944.4 MB in the beginning and 912.2 MB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 912.2 MB in the beginning and 1.1 GB in the end (delta: -230.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 260.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18342.11 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 192.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 111.1 MB). Peak memory consumption was 304.1 MB. Max. memory is 11.5 GB. * Witness Printer took 35.88 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: 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 5 procedures, 64 locations, 1 error locations. SAFE Result, 18.2s OverallTime, 11 OverallIterations, 11 TraceHistogramMax, 12.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 981 SDtfs, 5719 SDslu, 10447 SDs, 0 SdLazy, 2045 SolverSat, 584 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1558 GetRequests, 1277 SyntacticMatches, 3 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 694 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 773 NumberOfCodeBlocks, 773 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1404 ConstructedInterpolants, 0 QuantifiedInterpolants, 516364 SizeOfPredicates, 164 NumberOfNonLiveVariables, 1246 ConjunctsInSsa, 181 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 16/2132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...