./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 0.1.23-635dfa2 [2018-12-09 09:14:56,488 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:14:56,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:14:56,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:14:56,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:14:56,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:14:56,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:14:56,499 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:14:56,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:14:56,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:14:56,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:14:56,501 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:14:56,502 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:14:56,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:14:56,503 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:14:56,503 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:14:56,504 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:14:56,505 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:14:56,507 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:14:56,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:14:56,508 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:14:56,509 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:14:56,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:14:56,511 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:14:56,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:14:56,512 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:14:56,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:14:56,513 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:14:56,514 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:14:56,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:14:56,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:14:56,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:14:56,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:14:56,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:14:56,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:14:56,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:14:56,517 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 09:14:56,527 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:14:56,527 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:14:56,528 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:14:56,528 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:14:56,528 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:14:56,529 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:14:56,529 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:14:56,529 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:14:56,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:14:56,529 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:14:56,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:14:56,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:14:56,530 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:14:56,531 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:14:56,531 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 09:14:56,531 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_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:14:56,553 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:14:56,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:14:56,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:14:56,562 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:14:56,562 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:14:56,563 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-09 09:14:56,596 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/0ee391ed2/d1539074b09040c184c581dea22e2ca9/FLAGc76a87f53 [2018-12-09 09:14:57,118 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:14:57,119 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-09 09:14:57,125 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/0ee391ed2/d1539074b09040c184c581dea22e2ca9/FLAGc76a87f53 [2018-12-09 09:14:57,593 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/0ee391ed2/d1539074b09040c184c581dea22e2ca9 [2018-12-09 09:14:57,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:14:57,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:14:57,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:14:57,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:14:57,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:14:57,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178df10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57, skipping insertion in model container [2018-12-09 09:14:57,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:14:57,635 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:14:57,818 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:14:57,860 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:14:57,891 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:14:57,919 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:14:57,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57 WrapperNode [2018-12-09 09:14:57,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:14:57,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:14:57,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:14:57,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:14:57,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:14:57,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:14:57,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:14:57,947 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:14:57,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... [2018-12-09 09:14:57,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:14:57,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:14:57,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:14:57,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:14:57,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:14:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:14:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 09:14:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 09:14:58,002 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 09:14:58,002 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 09:14:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 09:14:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 09:14:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:14:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 09:14:58,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:14:58,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:14:58,004 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:14:58,163 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:14:58,163 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 09:14:58,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:14:58 BoogieIcfgContainer [2018-12-09 09:14:58,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:14:58,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:14:58,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:14:58,167 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:14:58,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:14:57" (1/3) ... [2018-12-09 09:14:58,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e67d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:14:58, skipping insertion in model container [2018-12-09 09:14:58,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:14:57" (2/3) ... [2018-12-09 09:14:58,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e67d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:14:58, skipping insertion in model container [2018-12-09 09:14:58,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:14:58" (3/3) ... [2018-12-09 09:14:58,169 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-12-09 09:14:58,193 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,193 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,193 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,194 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,195 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,196 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,197 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:14:58,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:14:58,202 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:14:58,209 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:14:58,222 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:14:58,242 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:14:58,242 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:14:58,242 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:14:58,242 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:14:58,242 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:14:58,242 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:14:58,242 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:14:58,243 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:14:58,248 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-09 09:14:58,277 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-09 09:14:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-09 09:14:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 09:14:58,284 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:14:58,285 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:14:58,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:14:58,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:14:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-09 09:14:58,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:14:58,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:14:58,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,328 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:14:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:14:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:14:58,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:14:58,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:14:58,441 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:14:58,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:14:58,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:14:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:14:58,454 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-09 09:14:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:14:58,518 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-12-09 09:14:58,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:14:58,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 09:14:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:14:58,529 INFO L225 Difference]: With dead ends: 1411 [2018-12-09 09:14:58,529 INFO L226 Difference]: Without dead ends: 322 [2018-12-09 09:14:58,530 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 [2018-12-09 09:14:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-12-09 09:14:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-12-09 09:14:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-12-09 09:14:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-12-09 09:14:58,564 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-12-09 09:14:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:14:58,564 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-12-09 09:14:58,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:14:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-12-09 09:14:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 09:14:58,565 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:14:58,565 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] [2018-12-09 09:14:58,566 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:14:58,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:14:58,566 INFO L82 PathProgramCache]: Analyzing trace with hash -158111408, now seen corresponding path program 1 times [2018-12-09 09:14:58,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:14:58,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:14:58,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,569 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:14:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:14:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:14:58,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:14:58,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:14:58,622 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:14:58,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:14:58,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:14:58,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:14:58,623 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-12-09 09:14:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:14:58,646 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-12-09 09:14:58,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:14:58,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 09:14:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:14:58,648 INFO L225 Difference]: With dead ends: 411 [2018-12-09 09:14:58,648 INFO L226 Difference]: Without dead ends: 290 [2018-12-09 09:14:58,648 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 [2018-12-09 09:14:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-09 09:14:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-09 09:14:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-09 09:14:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-09 09:14:58,657 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-09 09:14:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:14:58,657 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-09 09:14:58,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:14:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-09 09:14:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 09:14:58,658 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:14:58,658 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] [2018-12-09 09:14:58,658 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:14:58,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:14:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1832836244, now seen corresponding path program 1 times [2018-12-09 09:14:58,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:14:58,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:14:58,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,662 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:14:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:14:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:14:58,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:14:58,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:14:58,709 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:14:58,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:14:58,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:14:58,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:14:58,710 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-09 09:14:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:14:58,746 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-09 09:14:58,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:14:58,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 09:14:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:14:58,748 INFO L225 Difference]: With dead ends: 437 [2018-12-09 09:14:58,749 INFO L226 Difference]: Without dead ends: 300 [2018-12-09 09:14:58,749 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 [2018-12-09 09:14:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-12-09 09:14:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 287. [2018-12-09 09:14:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-12-09 09:14:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 708 transitions. [2018-12-09 09:14:58,759 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 708 transitions. Word has length 25 [2018-12-09 09:14:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:14:58,759 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 708 transitions. [2018-12-09 09:14:58,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:14:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 708 transitions. [2018-12-09 09:14:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 09:14:58,760 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:14:58,761 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] [2018-12-09 09:14:58,761 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:14:58,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:14:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 2 times [2018-12-09 09:14:58,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:14:58,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:14:58,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,765 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:14:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:14:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:14:58,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:14:58,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:14:58,823 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:14:58,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:14:58,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:14:58,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:14:58,824 INFO L87 Difference]: Start difference. First operand 287 states and 708 transitions. Second operand 6 states. [2018-12-09 09:14:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:14:58,858 INFO L93 Difference]: Finished difference Result 447 states and 1077 transitions. [2018-12-09 09:14:58,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:14:58,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 09:14:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:14:58,860 INFO L225 Difference]: With dead ends: 447 [2018-12-09 09:14:58,860 INFO L226 Difference]: Without dead ends: 319 [2018-12-09 09:14:58,860 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 [2018-12-09 09:14:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-09 09:14:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-09 09:14:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 09:14:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-09 09:14:58,866 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-09 09:14:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:14:58,866 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-09 09:14:58,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:14:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-09 09:14:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 09:14:58,867 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:14:58,867 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] [2018-12-09 09:14:58,867 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:14:58,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:14:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash -390066897, now seen corresponding path program 1 times [2018-12-09 09:14:58,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:14:58,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 09:14:58,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:14:58,870 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:14:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:14:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:14:58,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:14:58,910 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 09:14:58,911 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 [2018-12-09 09:14:58,913 INFO L168 Benchmark]: Toolchain (without parser) took 1317.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 945.9 MB in the beginning and 947.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 113.9 MB. Max. memory is 11.5 GB. [2018-12-09 09:14:58,914 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:14:58,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:14:58,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:14:58,915 INFO L168 Benchmark]: Boogie Preprocessor took 16.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:14:58,916 INFO L168 Benchmark]: RCFGBuilder took 200.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:14:58,916 INFO L168 Benchmark]: TraceAbstraction took 748.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 947.9 MB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:14:58,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 748.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 947.9 MB in the end (delta: 119.2 MB). Peak memory consumption was 119.2 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 0.1.23-635dfa2 [2018-12-09 09:15:00,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:15:00,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:15:00,323 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:15:00,323 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:15:00,324 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:15:00,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:15:00,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:15:00,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:15:00,327 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:15:00,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:15:00,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:15:00,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:15:00,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:15:00,329 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:15:00,329 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:15:00,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:15:00,331 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:15:00,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:15:00,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:15:00,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:15:00,333 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:15:00,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:15:00,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:15:00,335 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:15:00,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:15:00,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:15:00,336 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:15:00,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:15:00,337 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:15:00,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:15:00,337 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:15:00,337 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:15:00,337 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:15:00,338 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:15:00,338 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:15:00,338 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 09:15:00,345 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:15:00,346 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:15:00,346 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:15:00,346 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:15:00,346 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:15:00,346 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:15:00,346 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:15:00,346 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:15:00,347 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:15:00,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:15:00,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:15:00,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:15:00,349 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 09:15:00,349 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 09:15:00,349 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_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:00,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:15:00,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:15:00,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:15:00,377 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:15:00,377 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:15:00,377 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-09 09:15:00,412 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/f1af2393d/48c202759c8a49428028ca8a128ed375/FLAG540c59b51 [2018-12-09 09:15:00,785 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:15:00,785 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-09 09:15:00,794 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/f1af2393d/48c202759c8a49428028ca8a128ed375/FLAG540c59b51 [2018-12-09 09:15:01,168 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/data/f1af2393d/48c202759c8a49428028ca8a128ed375 [2018-12-09 09:15:01,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:15:01,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:15:01,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:15:01,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:15:01,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:15:01,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39933d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01, skipping insertion in model container [2018-12-09 09:15:01,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:15:01,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:15:01,378 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:15:01,386 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:15:01,413 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:15:01,485 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:15:01,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01 WrapperNode [2018-12-09 09:15:01,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:15:01,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:15:01,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:15:01,486 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:15:01,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:15:01,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:15:01,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:15:01,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:15:01,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... [2018-12-09 09:15:01,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:15:01,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:15:01,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:15:01,543 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:15:01,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:01,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:15:01,582 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-09 09:15:01,582 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-09 09:15:01,583 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-09 09:15:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:15:01,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:15:01,585 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-09 09:15:01,759 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:15:01,759 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 09:15:01,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:01 BoogieIcfgContainer [2018-12-09 09:15:01,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:15:01,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:15:01,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:15:01,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:15:01,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:15:01" (1/3) ... [2018-12-09 09:15:01,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb09d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:01, skipping insertion in model container [2018-12-09 09:15:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:15:01" (2/3) ... [2018-12-09 09:15:01,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb09d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:15:01, skipping insertion in model container [2018-12-09 09:15:01,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:01" (3/3) ... [2018-12-09 09:15:01,763 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,781 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,782 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,783 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,784 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,784 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,784 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,784 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,784 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 09:15:01,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-09 09:15:01,789 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:15:01,794 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:15:01,802 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:15:01,816 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:15:01,816 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:15:01,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:15:01,816 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:15:01,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:15:01,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:15:01,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:15:01,816 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:15:01,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:15:01,821 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-09 09:15:01,850 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-09 09:15:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-09 09:15:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-09 09:15:01,856 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:01,857 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:15:01,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:01,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:01,862 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-09 09:15:01,864 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:01,865 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:01,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:01,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:01,979 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:15:01,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:01,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:15:01,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:15:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:15:01,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:15:01,994 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-09 09:15:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:02,090 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-12-09 09:15:02,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:15:02,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-09 09:15:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:02,102 INFO L225 Difference]: With dead ends: 1777 [2018-12-09 09:15:02,102 INFO L226 Difference]: Without dead ends: 499 [2018-12-09 09:15:02,103 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 [2018-12-09 09:15:02,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-12-09 09:15:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-12-09 09:15:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-09 09:15:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-12-09 09:15:02,141 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-12-09 09:15:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:02,141 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-12-09 09:15:02,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:15:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-12-09 09:15:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 09:15:02,142 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:02,142 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] [2018-12-09 09:15:02,142 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:02,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-09 09:15:02,143 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:02,143 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:02,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:02,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,222 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:15:02,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:02,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:15:02,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:15:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:15:02,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:15:02,224 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-12-09 09:15:02,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:02,270 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-12-09 09:15:02,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:15:02,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 09:15:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:02,273 INFO L225 Difference]: With dead ends: 464 [2018-12-09 09:15:02,273 INFO L226 Difference]: Without dead ends: 343 [2018-12-09 09:15:02,274 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 [2018-12-09 09:15:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-12-09 09:15:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-12-09 09:15:02,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 09:15:02,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-12-09 09:15:02,288 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-12-09 09:15:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:02,289 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-12-09 09:15:02,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:15:02,289 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-12-09 09:15:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 09:15:02,290 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:02,290 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] [2018-12-09 09:15:02,290 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:02,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-12-09 09:15:02,291 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:02,291 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:02,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:02,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,380 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:15:02,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:02,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:15:02,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:15:02,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:15:02,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:15:02,382 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-12-09 09:15:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:02,419 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-12-09 09:15:02,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:15:02,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 09:15:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:02,421 INFO L225 Difference]: With dead ends: 420 [2018-12-09 09:15:02,421 INFO L226 Difference]: Without dead ends: 290 [2018-12-09 09:15:02,421 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 [2018-12-09 09:15:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-09 09:15:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-09 09:15:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-09 09:15:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-09 09:15:02,428 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-09 09:15:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:02,428 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-09 09:15:02,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:15:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-09 09:15:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 09:15:02,429 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:02,429 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] [2018-12-09 09:15:02,429 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:02,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:02,430 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-09 09:15:02,430 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:02,430 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:02,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:02,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:02,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:15:02,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:02,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:15:02,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:15:02,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:15:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:15:02,527 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-09 09:15:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:02,602 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-09 09:15:02,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:15:02,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 09:15:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:02,604 INFO L225 Difference]: With dead ends: 437 [2018-12-09 09:15:02,604 INFO L226 Difference]: Without dead ends: 309 [2018-12-09 09:15:02,604 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 [2018-12-09 09:15:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-09 09:15:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-09 09:15:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-09 09:15:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-09 09:15:02,610 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-09 09:15:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:02,610 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-09 09:15:02,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:15:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-09 09:15:02,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 09:15:02,611 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:02,611 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] [2018-12-09 09:15:02,611 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:02,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:02,612 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-09 09:15:02,612 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:02,612 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:02,636 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 09:15:02,674 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-09 09:15:02,674 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:02,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,705 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 09:15:02,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:15:02,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:15:02,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:15:02,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:15:02,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:15:02,708 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-09 09:15:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:02,768 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-09 09:15:02,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:15:02,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-09 09:15:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:02,770 INFO L225 Difference]: With dead ends: 456 [2018-12-09 09:15:02,770 INFO L226 Difference]: Without dead ends: 319 [2018-12-09 09:15:02,770 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 [2018-12-09 09:15:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-09 09:15:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-09 09:15:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-09 09:15:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-09 09:15:02,779 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-09 09:15:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:02,779 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-09 09:15:02,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:15:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-09 09:15:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 09:15:02,780 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:02,780 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] [2018-12-09 09:15:02,780 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:02,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-09 09:15:02,781 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:02,781 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:02,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 09:15:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:02,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,871 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:02,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:02,975 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:02,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:03,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:03,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-09 09:15:03,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 09:15:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 09:15:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 09:15:03,039 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-12-09 09:15:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:03,469 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-12-09 09:15:03,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 09:15:03,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-09 09:15:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:03,471 INFO L225 Difference]: With dead ends: 760 [2018-12-09 09:15:03,471 INFO L226 Difference]: Without dead ends: 383 [2018-12-09 09:15:03,471 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 [2018-12-09 09:15:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-12-09 09:15:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-12-09 09:15:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-12-09 09:15:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-12-09 09:15:03,476 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-12-09 09:15:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:03,477 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-12-09 09:15:03,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 09:15:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-12-09 09:15:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-09 09:15:03,477 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:03,477 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] [2018-12-09 09:15:03,478 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:03,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:03,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-12-09 09:15:03,478 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:03,478 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:03,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:03,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:03,662 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:03,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:03,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:03,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:03,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-09 09:15:03,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 09:15:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 09:15:03,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-09 09:15:03,706 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-12-09 09:15:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:04,131 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-12-09 09:15:04,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 09:15:04,131 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-09 09:15:04,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:04,133 INFO L225 Difference]: With dead ends: 824 [2018-12-09 09:15:04,133 INFO L226 Difference]: Without dead ends: 447 [2018-12-09 09:15:04,133 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 [2018-12-09 09:15:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-12-09 09:15:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-12-09 09:15:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-09 09:15:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-09 09:15:04,138 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-12-09 09:15:04,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:04,139 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-09 09:15:04,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 09:15:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-09 09:15:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 09:15:04,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:04,140 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] [2018-12-09 09:15:04,140 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:04,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-12-09 09:15:04,140 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:04,140 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:04,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:04,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:15:04,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:15:04,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:04,515 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:04,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:15:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:15:04,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:15:04,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 09:15:04,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:04,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-12-09 09:15:04,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 09:15:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 09:15:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-12-09 09:15:04,588 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-12-09 09:15:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:06,027 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-12-09 09:15:06,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-09 09:15:06,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-12-09 09:15:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:06,029 INFO L225 Difference]: With dead ends: 1302 [2018-12-09 09:15:06,030 INFO L226 Difference]: Without dead ends: 643 [2018-12-09 09:15:06,030 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 [2018-12-09 09:15:06,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-12-09 09:15:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-12-09 09:15:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-09 09:15:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-09 09:15:06,038 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-12-09 09:15:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:06,038 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-09 09:15:06,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 09:15:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-09 09:15:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 09:15:06,039 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:06,039 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] [2018-12-09 09:15:06,040 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:06,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:06,040 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-12-09 09:15:06,040 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:06,040 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:06,055 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-09 09:15:06,129 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 09:15:06,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:06,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:06,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:07,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:07,081 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:07,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 09:15:07,112 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 09:15:07,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:07,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:07,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:07,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:07,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2018-12-09 09:15:07,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 09:15:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 09:15:07,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2018-12-09 09:15:07,188 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 25 states. [2018-12-09 09:15:09,273 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-12-09 09:15:09,496 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-12-09 09:15:09,708 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2018-12-09 09:15:09,929 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2018-12-09 09:15:10,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:10,931 INFO L93 Difference]: Finished difference Result 1718 states and 4109 transitions. [2018-12-09 09:15:10,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 09:15:10,932 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-12-09 09:15:10,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:10,934 INFO L225 Difference]: With dead ends: 1718 [2018-12-09 09:15:10,934 INFO L226 Difference]: Without dead ends: 767 [2018-12-09 09:15:10,935 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=758, Invalid=2434, Unknown=0, NotChecked=0, Total=3192 [2018-12-09 09:15:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-12-09 09:15:10,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2018-12-09 09:15:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2018-12-09 09:15:10,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1668 transitions. [2018-12-09 09:15:10,942 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1668 transitions. Word has length 57 [2018-12-09 09:15:10,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:10,942 INFO L480 AbstractCegarLoop]: Abstraction has 767 states and 1668 transitions. [2018-12-09 09:15:10,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 09:15:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1668 transitions. [2018-12-09 09:15:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-09 09:15:10,943 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:10,943 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] [2018-12-09 09:15:10,944 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:10,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash 690225639, now seen corresponding path program 3 times [2018-12-09 09:15:10,944 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:10,944 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:10,960 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-09 09:15:11,061 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-09 09:15:11,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:11,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:11,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:11,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:11,926 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:11,933 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 09:15:11,981 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-09 09:15:11,981 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:11,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:11,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:12,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:12,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17] total 31 [2018-12-09 09:15:12,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-09 09:15:12,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-09 09:15:12,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2018-12-09 09:15:12,032 INFO L87 Difference]: Start difference. First operand 767 states and 1668 transitions. Second operand 31 states. [2018-12-09 09:15:12,648 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-12-09 09:15:13,612 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-12-09 09:15:14,066 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2018-12-09 09:15:14,515 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2018-12-09 09:15:16,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:16,180 INFO L93 Difference]: Finished difference Result 1894 states and 4461 transitions. [2018-12-09 09:15:16,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-09 09:15:16,181 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2018-12-09 09:15:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:16,182 INFO L225 Difference]: With dead ends: 1894 [2018-12-09 09:15:16,182 INFO L226 Difference]: Without dead ends: 943 [2018-12-09 09:15:16,183 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=891, Invalid=3269, Unknown=0, NotChecked=0, Total=4160 [2018-12-09 09:15:16,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2018-12-09 09:15:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 623. [2018-12-09 09:15:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-12-09 09:15:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1380 transitions. [2018-12-09 09:15:16,189 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1380 transitions. Word has length 69 [2018-12-09 09:15:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:16,190 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 1380 transitions. [2018-12-09 09:15:16,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-09 09:15:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1380 transitions. [2018-12-09 09:15:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-12-09 09:15:16,191 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:15:16,191 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] [2018-12-09 09:15:16,191 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:15:16,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:15:16,191 INFO L82 PathProgramCache]: Analyzing trace with hash -313198963, now seen corresponding path program 4 times [2018-12-09 09:15:16,191 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-09 09:15:16,191 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-09 09:15:16,207 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 09:15:16,342 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 09:15:16,342 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:16,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:16,552 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:17,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:15:17,789 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/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 [2018-12-09 09:15:17,795 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 09:15:17,825 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 09:15:17,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 09:15:17,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:15:17,838 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:17,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 09:15:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:15:17,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-09 09:15:17,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23] total 44 [2018-12-09 09:15:17,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-09 09:15:17,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-09 09:15:17,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2018-12-09 09:15:17,872 INFO L87 Difference]: Start difference. First operand 623 states and 1380 transitions. Second operand 44 states. [2018-12-09 09:15:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:15:18,638 INFO L93 Difference]: Finished difference Result 2323 states and 4537 transitions. [2018-12-09 09:15:18,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-09 09:15:18,638 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 101 [2018-12-09 09:15:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:15:18,639 INFO L225 Difference]: With dead ends: 2323 [2018-12-09 09:15:18,639 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 09:15:18,639 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 [2018-12-09 09:15:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 09:15:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 09:15:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 09:15:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 09:15:18,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2018-12-09 09:15:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:15:18,640 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 09:15:18,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-09 09:15:18,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 09:15:18,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 09:15:18,642 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-09 09:15:18,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:15:18 BasicIcfg [2018-12-09 09:15:18,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:15:18,643 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:15:18,643 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:15:18,643 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:15:18,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:15:01" (3/4) ... [2018-12-09 09:15:18,645 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 09:15:18,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-12-09 09:15:18,649 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-12-09 09:15:18,651 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-09 09:15:18,652 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 09:15:18,652 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 09:15:18,673 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8949d247-8a8c-4584-9cce-8d569886bd9a/bin-2019/utaipan/witness.graphml [2018-12-09 09:15:18,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:15:18,673 INFO L168 Benchmark]: Toolchain (without parser) took 17498.67 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 336.6 MB). Free memory was 938.0 MB in the beginning and 1.0 GB in the end (delta: -107.0 MB). Peak memory consumption was 229.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,673 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:15:18,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.33 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,674 INFO L168 Benchmark]: Boogie Preprocessor took 25.29 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. [2018-12-09 09:15:18,674 INFO L168 Benchmark]: RCFGBuilder took 215.97 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,674 INFO L168 Benchmark]: TraceAbstraction took 16883.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 193.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 239.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,675 INFO L168 Benchmark]: Witness Printer took 29.78 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 11.5 GB. [2018-12-09 09:15:18,676 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.33 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.29 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 215.97 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: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16883.18 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 193.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.0 MB). Peak memory consumption was 239.5 MB. Max. memory is 11.5 GB. * Witness Printer took 29.78 ms. Allocated memory is still 1.4 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 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, 16.8s OverallTime, 11 OverallIterations, 11 TraceHistogramMax, 11.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 981 SDtfs, 5719 SDslu, 10447 SDs, 0 SdLazy, 2045 SolverSat, 584 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1558 GetRequests, 1277 SyntacticMatches, 3 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 13.0s 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: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 694 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s 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...