./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_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:37,466 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:34:37,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:34:37,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:34:37,474 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:34:37,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:34:37,475 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:34:37,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:34:37,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:34:37,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:34:37,477 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:34:37,477 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:34:37,478 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:34:37,479 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:34:37,479 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:34:37,480 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:34:37,480 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:34:37,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:34:37,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:34:37,483 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:34:37,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:34:37,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:34:37,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:34:37,485 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:34:37,485 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:34:37,486 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:34:37,486 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:34:37,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:34:37,487 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:34:37,488 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:34:37,488 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:34:37,488 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:34:37,488 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:34:37,488 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:34:37,489 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:34:37,489 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:34:37,490 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 05:34:37,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:34:37,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:34:37,498 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:34:37,498 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:34:37,498 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:34:37,498 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:34:37,498 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:34:37,498 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 05:34:37,498 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:34:37,499 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:34:37,499 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 05:34:37,499 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 05:34:37,499 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:34:37,499 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:34:37,499 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:34:37,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:34:37,501 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:34:37,501 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:34:37,501 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:34:37,501 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:34:37,501 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:34:37,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:34:37,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 05:34:37,502 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 05:34:37,502 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_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:37,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:34:37,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:34:37,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:34:37,530 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:34:37,530 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:34:37,530 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-02 05:34:37,567 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/d68db669b/7deac093193c4f3e90f81a1a463baaf2/FLAG8a178c56d [2018-12-02 05:34:38,044 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:34:38,044 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-02 05:34:38,051 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/d68db669b/7deac093193c4f3e90f81a1a463baaf2/FLAG8a178c56d [2018-12-02 05:34:38,059 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/d68db669b/7deac093193c4f3e90f81a1a463baaf2 [2018-12-02 05:34:38,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:34:38,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:34:38,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:34:38,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:34:38,064 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:34:38,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725a737b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38, skipping insertion in model container [2018-12-02 05:34:38,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:34:38,090 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:34:38,252 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:34:38,259 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:34:38,316 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:34:38,343 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:34:38,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38 WrapperNode [2018-12-02 05:34:38,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:34:38,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:34:38,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:34:38,344 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:34:38,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:34:38,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:34:38,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:34:38,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:34:38,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... [2018-12-02 05:34:38,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:34:38,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:34:38,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:34:38,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:34:38,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:34:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-02 05:34:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-02 05:34:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-02 05:34:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-02 05:34:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 05:34:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 05:34:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:34:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 05:34:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:34:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:34:38,424 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 05:34:38,576 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:34:38,576 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 05:34:38,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:38 BoogieIcfgContainer [2018-12-02 05:34:38,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:34:38,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:34:38,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:34:38,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:34:38,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:34:38" (1/3) ... [2018-12-02 05:34:38,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33511a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:38, skipping insertion in model container [2018-12-02 05:34:38,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:38" (2/3) ... [2018-12-02 05:34:38,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33511a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:38, skipping insertion in model container [2018-12-02 05:34:38,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:38" (3/3) ... [2018-12-02 05:34:38,583 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-12-02 05:34:38,604 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,604 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,604 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,604 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,605 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,606 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,607 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:38,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 05:34:38,612 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:34:38,617 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:34:38,625 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:34:38,639 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:34:38,639 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:34:38,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:34:38,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:34:38,640 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:34:38,640 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:34:38,640 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:34:38,640 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:34:38,644 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-02 05:34:38,673 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-02 05:34:38,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-02 05:34:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:34:38,680 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:38,680 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:34:38,682 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:38,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:38,685 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-02 05:34:38,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:34:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:38,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:38,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:38,722 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:34:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:38,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:38,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:34:38,820 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:34:38,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:34:38,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:34:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:34:38,838 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-02 05:34:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:38,900 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-12-02 05:34:38,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:34:38,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 05:34:38,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:38,910 INFO L225 Difference]: With dead ends: 1411 [2018-12-02 05:34:38,910 INFO L226 Difference]: Without dead ends: 322 [2018-12-02 05:34:38,911 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 [2018-12-02 05:34:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-12-02 05:34:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-12-02 05:34:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-12-02 05:34:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-12-02 05:34:38,944 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-12-02 05:34:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:38,944 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-12-02 05:34:38,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:34:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-12-02 05:34:38,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:34:38,945 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:38,945 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] [2018-12-02 05:34:38,945 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:38,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:38,946 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-02 05:34:38,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:34:38,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:38,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:38,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:38,949 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:34:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:38,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:38,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:34:38,999 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:34:39,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:34:39,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:34:39,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:34:39,001 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-12-02 05:34:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:39,030 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-12-02 05:34:39,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:34:39,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 05:34:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:39,032 INFO L225 Difference]: With dead ends: 411 [2018-12-02 05:34:39,032 INFO L226 Difference]: Without dead ends: 290 [2018-12-02 05:34:39,032 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 [2018-12-02 05:34:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-02 05:34:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-02 05:34:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-02 05:34:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-02 05:34:39,041 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-02 05:34:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:39,041 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-02 05:34:39,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:34:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-02 05:34:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 05:34:39,042 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:39,042 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] [2018-12-02 05:34:39,042 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:39,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-02 05:34:39,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:34:39,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:39,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,045 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:34:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:39,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:39,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 05:34:39,087 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:34:39,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:34:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:34:39,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:34:39,087 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-02 05:34:39,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:39,125 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-02 05:34:39,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:34:39,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 05:34:39,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:39,127 INFO L225 Difference]: With dead ends: 437 [2018-12-02 05:34:39,127 INFO L226 Difference]: Without dead ends: 309 [2018-12-02 05:34:39,127 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 [2018-12-02 05:34:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-02 05:34:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-02 05:34:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-02 05:34:39,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-02 05:34:39,134 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-02 05:34:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:39,134 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-02 05:34:39,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:34:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-02 05:34:39,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 05:34:39,135 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:39,135 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] [2018-12-02 05:34:39,135 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:39,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-02 05:34:39,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:34:39,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:39,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,138 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:34:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:39,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:39,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 05:34:39,182 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 05:34:39,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:34:39,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:34:39,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:34:39,183 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-02 05:34:39,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:39,217 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-02 05:34:39,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:34:39,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 05:34:39,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:39,219 INFO L225 Difference]: With dead ends: 456 [2018-12-02 05:34:39,219 INFO L226 Difference]: Without dead ends: 319 [2018-12-02 05:34:39,219 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 [2018-12-02 05:34:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-02 05:34:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-02 05:34:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 05:34:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-02 05:34:39,226 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-02 05:34:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:39,226 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-02 05:34:39,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:34:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-02 05:34:39,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 05:34:39,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:39,228 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] [2018-12-02 05:34:39,228 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:39,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:39,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-02 05:34:39,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 05:34:39,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:34:39,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 05:34:39,231 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 05:34:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:39,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:39,287 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 05:34:39,288 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 [2018-12-02 05:34:39,290 INFO L168 Benchmark]: Toolchain (without parser) took 1229.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 959.5 MB in the end (delta: -12.5 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:39,291 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 05:34:39,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:39,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.90 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. [2018-12-02 05:34:39,293 INFO L168 Benchmark]: Boogie Preprocessor took 14.15 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. [2018-12-02 05:34:39,293 INFO L168 Benchmark]: RCFGBuilder took 193.27 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. [2018-12-02 05:34:39,293 INFO L168 Benchmark]: TraceAbstraction took 712.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.5 MB in the end (delta: 127.3 MB). Peak memory consumption was 127.3 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:39,296 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 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.15 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 193.27 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 712.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.5 MB in the end (delta: 127.3 MB). Peak memory consumption was 127.3 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 [2018-12-02 05:34:40,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 05:34:40,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 05:34:40,693 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 05:34:40,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 05:34:40,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 05:34:40,694 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 05:34:40,695 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 05:34:40,696 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 05:34:40,697 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 05:34:40,698 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 05:34:40,698 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 05:34:40,698 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 05:34:40,699 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 05:34:40,700 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 05:34:40,700 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 05:34:40,701 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 05:34:40,702 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 05:34:40,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 05:34:40,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 05:34:40,704 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 05:34:40,705 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 05:34:40,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 05:34:40,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 05:34:40,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 05:34:40,707 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 05:34:40,707 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 05:34:40,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 05:34:40,708 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 05:34:40,709 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 05:34:40,709 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 05:34:40,710 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 05:34:40,710 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 05:34:40,710 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 05:34:40,711 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 05:34:40,711 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 05:34:40,711 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-02 05:34:40,721 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 05:34:40,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 05:34:40,722 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 05:34:40,723 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 05:34:40,723 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 05:34:40,723 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 05:34:40,723 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 05:34:40,723 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 05:34:40,723 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 05:34:40,724 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 05:34:40,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 05:34:40,724 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 05:34:40,724 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 05:34:40,725 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 05:34:40,726 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 05:34:40,726 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 05:34:40,726 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 05:34:40,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 05:34:40,726 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 05:34:40,726 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 05:34:40,727 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 05:34:40,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 05:34:40,727 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 05:34:40,727 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 05:34:40,727 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 05:34:40,727 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-02 05:34:40,728 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 05:34:40,728 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 05:34:40,728 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 05:34:40,728 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_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:40,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 05:34:40,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 05:34:40,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 05:34:40,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 05:34:40,762 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 05:34:40,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/../../sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-02 05:34:40,800 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/4b251255b/f299fc68fdb342388c901ae70f325dd8/FLAGdd6ad72e3 [2018-12-02 05:34:41,178 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 05:34:41,179 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/sv-benchmarks/c/pthread/triangular-longer_true-unreach-call.i [2018-12-02 05:34:41,188 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/4b251255b/f299fc68fdb342388c901ae70f325dd8/FLAGdd6ad72e3 [2018-12-02 05:34:41,532 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/data/4b251255b/f299fc68fdb342388c901ae70f325dd8 [2018-12-02 05:34:41,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 05:34:41,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 05:34:41,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 05:34:41,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 05:34:41,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 05:34:41,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,540 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 02.12 05:34:41, skipping insertion in model container [2018-12-02 05:34:41,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 05:34:41,575 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 05:34:41,737 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:34:41,745 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 05:34:41,816 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 05:34:41,862 INFO L195 MainTranslator]: Completed translation [2018-12-02 05:34:41,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41 WrapperNode [2018-12-02 05:34:41,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 05:34:41,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 05:34:41,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 05:34:41,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 05:34:41,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 05:34:41,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 05:34:41,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 05:34:41,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 05:34:41,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... [2018-12-02 05:34:41,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 05:34:41,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 05:34:41,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 05:34:41,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 05:34:41,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-02 05:34:41,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-02 05:34:41,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 05:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-02 05:34:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-02 05:34:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 05:34:41,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 05:34:41,960 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-02 05:34:42,104 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 05:34:42,104 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-02 05:34:42,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:42 BoogieIcfgContainer [2018-12-02 05:34:42,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 05:34:42,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 05:34:42,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 05:34:42,106 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 05:34:42,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:34:41" (1/3) ... [2018-12-02 05:34:42,107 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 02.12 05:34:42, skipping insertion in model container [2018-12-02 05:34:42,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:41" (2/3) ... [2018-12-02 05:34:42,107 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 02.12 05:34:42, skipping insertion in model container [2018-12-02 05:34:42,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:42" (3/3) ... [2018-12-02 05:34:42,108 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer_true-unreach-call.i [2018-12-02 05:34:42,126 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,126 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,126 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,126 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,127 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,128 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,129 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,130 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 05:34:42,135 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-02 05:34:42,135 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 05:34:42,141 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 05:34:42,150 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 05:34:42,163 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 05:34:42,164 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 05:34:42,164 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 05:34:42,164 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 05:34:42,164 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 05:34:42,164 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 05:34:42,164 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 05:34:42,164 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 05:34:42,164 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 05:34:42,169 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-02 05:34:42,199 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-02 05:34:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-02 05:34:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 05:34:42,205 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:42,206 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 05:34:42,207 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:42,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:42,211 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-02 05:34:42,214 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:42,214 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:42,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:42,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:42,341 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:34:42,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:42,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:34:42,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:34:42,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:34:42,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:34:42,363 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-02 05:34:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:42,458 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2018-12-02 05:34:42,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:34:42,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-02 05:34:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:42,470 INFO L225 Difference]: With dead ends: 1777 [2018-12-02 05:34:42,470 INFO L226 Difference]: Without dead ends: 499 [2018-12-02 05:34:42,471 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 [2018-12-02 05:34:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-12-02 05:34:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2018-12-02 05:34:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-12-02 05:34:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2018-12-02 05:34:42,511 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2018-12-02 05:34:42,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:42,512 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2018-12-02 05:34:42,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:34:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2018-12-02 05:34:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:34:42,513 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:42,513 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] [2018-12-02 05:34:42,513 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:42,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-02 05:34:42,513 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:42,514 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:42,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:42,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:42,593 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:34:42,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:42,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:34:42,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:34:42,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:34:42,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:34:42,596 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2018-12-02 05:34:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:42,647 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2018-12-02 05:34:42,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:34:42,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 05:34:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:42,649 INFO L225 Difference]: With dead ends: 464 [2018-12-02 05:34:42,649 INFO L226 Difference]: Without dead ends: 343 [2018-12-02 05:34:42,650 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 [2018-12-02 05:34:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-12-02 05:34:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2018-12-02 05:34:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 05:34:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2018-12-02 05:34:42,659 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2018-12-02 05:34:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:42,660 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2018-12-02 05:34:42,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:34:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2018-12-02 05:34:42,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 05:34:42,660 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:42,660 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] [2018-12-02 05:34:42,661 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:42,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash 676041288, now seen corresponding path program 1 times [2018-12-02 05:34:42,661 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:42,661 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:42,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:42,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:42,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:42,740 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:34:42,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:42,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 05:34:42,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 05:34:42,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 05:34:42,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-02 05:34:42,743 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2018-12-02 05:34:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:42,783 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2018-12-02 05:34:42,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 05:34:42,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-02 05:34:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:42,785 INFO L225 Difference]: With dead ends: 420 [2018-12-02 05:34:42,785 INFO L226 Difference]: Without dead ends: 290 [2018-12-02 05:34:42,785 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 [2018-12-02 05:34:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-02 05:34:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-02 05:34:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-02 05:34:42,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-02 05:34:42,795 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-02 05:34:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:42,795 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-02 05:34:42,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 05:34:42,795 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-02 05:34:42,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 05:34:42,796 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:42,796 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] [2018-12-02 05:34:42,797 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:42,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-02 05:34:42,797 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:42,797 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:42,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:42,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:42,884 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:34:42,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:42,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 05:34:42,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:34:42,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:34:42,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:34:42,887 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-02 05:34:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:42,965 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-02 05:34:42,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:34:42,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 05:34:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:42,968 INFO L225 Difference]: With dead ends: 437 [2018-12-02 05:34:42,968 INFO L226 Difference]: Without dead ends: 309 [2018-12-02 05:34:42,968 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 [2018-12-02 05:34:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-02 05:34:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-02 05:34:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-02 05:34:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-02 05:34:42,976 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-02 05:34:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:42,977 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-02 05:34:42,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:34:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-02 05:34:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 05:34:42,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:42,978 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] [2018-12-02 05:34:42,978 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:42,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-02 05:34:42,979 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:42,979 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:42,995 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 05:34:43,029 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-02 05:34:43,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:43,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,060 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 05:34:43,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 05:34:43,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 05:34:43,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 05:34:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 05:34:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 05:34:43,063 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-02 05:34:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:43,124 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-02 05:34:43,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 05:34:43,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-02 05:34:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:43,126 INFO L225 Difference]: With dead ends: 456 [2018-12-02 05:34:43,126 INFO L226 Difference]: Without dead ends: 319 [2018-12-02 05:34:43,126 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 [2018-12-02 05:34:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-02 05:34:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-02 05:34:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-02 05:34:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-02 05:34:43,132 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-02 05:34:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:43,132 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-02 05:34:43,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 05:34:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-02 05:34:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 05:34:43,133 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:43,133 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] [2018-12-02 05:34:43,133 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:43,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-02 05:34:43,134 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:43,134 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:43,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 05:34:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:43,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:43,319 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:43,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:43,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:43,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-02 05:34:43,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:34:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:34:43,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:34:43,377 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 11 states. [2018-12-02 05:34:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:43,885 INFO L93 Difference]: Finished difference Result 760 states and 1850 transitions. [2018-12-02 05:34:43,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-02 05:34:43,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-02 05:34:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:43,887 INFO L225 Difference]: With dead ends: 760 [2018-12-02 05:34:43,887 INFO L226 Difference]: Without dead ends: 383 [2018-12-02 05:34:43,887 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 [2018-12-02 05:34:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-12-02 05:34:43,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 351. [2018-12-02 05:34:43,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-12-02 05:34:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-12-02 05:34:43,897 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-12-02 05:34:43,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:43,897 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-12-02 05:34:43,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:34:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-12-02 05:34:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-02 05:34:43,899 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:43,899 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] [2018-12-02 05:34:43,899 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:43,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-12-02 05:34:43,900 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:43,900 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:43,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:43,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:43,992 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:44,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:44,090 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:44,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:44,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:44,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:44,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:44,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-12-02 05:34:44,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 05:34:44,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 05:34:44,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-12-02 05:34:44,147 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 11 states. [2018-12-02 05:34:44,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:44,572 INFO L93 Difference]: Finished difference Result 824 states and 1978 transitions. [2018-12-02 05:34:44,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-02 05:34:44,572 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-12-02 05:34:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:44,574 INFO L225 Difference]: With dead ends: 824 [2018-12-02 05:34:44,574 INFO L226 Difference]: Without dead ends: 447 [2018-12-02 05:34:44,574 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 [2018-12-02 05:34:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-12-02 05:34:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-12-02 05:34:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-02 05:34:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-02 05:34:44,579 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 29 [2018-12-02 05:34:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:44,579 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-02 05:34:44,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 05:34:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-02 05:34:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 05:34:44,580 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:44,580 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] [2018-12-02 05:34:44,580 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:44,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -956668217, now seen corresponding path program 1 times [2018-12-02 05:34:44,580 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:44,580 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:44,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:44,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:34:44,704 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:34:44,927 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:44,927 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:44,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 05:34:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 05:34:44,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:34:44,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 05:34:45,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:45,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 17 [2018-12-02 05:34:45,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 05:34:45,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 05:34:45,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-12-02 05:34:45,009 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 17 states. [2018-12-02 05:34:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:46,319 INFO L93 Difference]: Finished difference Result 1302 states and 3081 transitions. [2018-12-02 05:34:46,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-02 05:34:46,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2018-12-02 05:34:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:46,323 INFO L225 Difference]: With dead ends: 1302 [2018-12-02 05:34:46,324 INFO L226 Difference]: Without dead ends: 643 [2018-12-02 05:34:46,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=324, Invalid=936, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 05:34:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-12-02 05:34:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 447. [2018-12-02 05:34:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-02 05:34:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-02 05:34:46,338 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 45 [2018-12-02 05:34:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:46,338 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-02 05:34:46,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 05:34:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-02 05:34:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-02 05:34:46,340 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:46,340 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] [2018-12-02 05:34:46,340 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:46,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 2 times [2018-12-02 05:34:46,341 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:46,342 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:46,373 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 05:34:46,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:34:46,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:46,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:46,536 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:47,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:47,330 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:47,340 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 05:34:47,385 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 05:34:47,385 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:47,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:47,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:47,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:47,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 25 [2018-12-02 05:34:47,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-02 05:34:47,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-02 05:34:47,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2018-12-02 05:34:47,464 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 25 states. [2018-12-02 05:34:49,449 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-12-02 05:34:49,663 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-12-02 05:34:49,875 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 21 [2018-12-02 05:34:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:51,082 INFO L93 Difference]: Finished difference Result 1718 states and 4109 transitions. [2018-12-02 05:34:51,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-02 05:34:51,082 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2018-12-02 05:34:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:51,084 INFO L225 Difference]: With dead ends: 1718 [2018-12-02 05:34:51,084 INFO L226 Difference]: Without dead ends: 767 [2018-12-02 05:34:51,084 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=758, Invalid=2434, Unknown=0, NotChecked=0, Total=3192 [2018-12-02 05:34:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-12-02 05:34:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2018-12-02 05:34:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2018-12-02 05:34:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1668 transitions. [2018-12-02 05:34:51,091 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1668 transitions. Word has length 57 [2018-12-02 05:34:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:51,091 INFO L480 AbstractCegarLoop]: Abstraction has 767 states and 1668 transitions. [2018-12-02 05:34:51,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-02 05:34:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1668 transitions. [2018-12-02 05:34:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-02 05:34:51,092 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:51,092 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] [2018-12-02 05:34:51,092 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:51,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash 690225639, now seen corresponding path program 3 times [2018-12-02 05:34:51,092 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:51,092 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:51,109 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-12-02 05:34:51,237 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-02 05:34:51,237 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:51,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:51,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:52,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:52,078 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:52,085 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 05:34:52,154 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-02 05:34:52,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:52,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:52,168 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:52,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:52,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17] total 31 [2018-12-02 05:34:52,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-02 05:34:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-02 05:34:52,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2018-12-02 05:34:52,212 INFO L87 Difference]: Start difference. First operand 767 states and 1668 transitions. Second operand 31 states. [2018-12-02 05:34:52,850 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-12-02 05:34:54,715 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 21 [2018-12-02 05:34:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:56,502 INFO L93 Difference]: Finished difference Result 1894 states and 4461 transitions. [2018-12-02 05:34:56,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-02 05:34:56,503 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2018-12-02 05:34:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:56,505 INFO L225 Difference]: With dead ends: 1894 [2018-12-02 05:34:56,505 INFO L226 Difference]: Without dead ends: 943 [2018-12-02 05:34:56,506 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 [2018-12-02 05:34:56,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2018-12-02 05:34:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 623. [2018-12-02 05:34:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-12-02 05:34:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1380 transitions. [2018-12-02 05:34:56,514 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1380 transitions. Word has length 69 [2018-12-02 05:34:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:56,514 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 1380 transitions. [2018-12-02 05:34:56,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-02 05:34:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1380 transitions. [2018-12-02 05:34:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-12-02 05:34:56,516 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 05:34:56,516 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] [2018-12-02 05:34:56,516 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 05:34:56,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 05:34:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash -313198963, now seen corresponding path program 4 times [2018-12-02 05:34:56,516 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 05:34:56,516 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:56,532 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:34:56,662 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:34:56,662 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:56,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:56,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:58,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 05:34:58,067 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/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 [2018-12-02 05:34:58,074 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 05:34:58,105 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 05:34:58,105 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 05:34:58,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 05:34:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:58,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 05:34:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 05:34:58,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-02 05:34:58,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23, 23] total 44 [2018-12-02 05:34:58,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-02 05:34:58,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-02 05:34:58,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1686, Unknown=0, NotChecked=0, Total=1892 [2018-12-02 05:34:58,146 INFO L87 Difference]: Start difference. First operand 623 states and 1380 transitions. Second operand 44 states. [2018-12-02 05:34:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 05:34:58,891 INFO L93 Difference]: Finished difference Result 2323 states and 4537 transitions. [2018-12-02 05:34:58,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-02 05:34:58,891 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 101 [2018-12-02 05:34:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 05:34:58,892 INFO L225 Difference]: With dead ends: 2323 [2018-12-02 05:34:58,892 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 05:34:58,892 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 [2018-12-02 05:34:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 05:34:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 05:34:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 05:34:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 05:34:58,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2018-12-02 05:34:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 05:34:58,893 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 05:34:58,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-02 05:34:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 05:34:58,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 05:34:58,895 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-02 05:34:58,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:34:58 BasicIcfg [2018-12-02 05:34:58,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 05:34:58,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 05:34:58,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 05:34:58,896 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 05:34:58,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:42" (3/4) ... [2018-12-02 05:34:58,898 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 05:34:58,902 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-12-02 05:34:58,902 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-12-02 05:34:58,905 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-02 05:34:58,905 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-02 05:34:58,905 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 05:34:58,926 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_98db862f-db33-4a31-83a3-892d4d5e063e/bin-2019/utaipan/witness.graphml [2018-12-02 05:34:58,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 05:34:58,926 INFO L168 Benchmark]: Toolchain (without parser) took 17392.10 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 340.3 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -132.6 MB). Peak memory consumption was 207.6 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:58,927 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-12-02 05:34:58,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:58,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.22 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. [2018-12-02 05:34:58,927 INFO L168 Benchmark]: Boogie Preprocessor took 23.61 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. [2018-12-02 05:34:58,928 INFO L168 Benchmark]: RCFGBuilder took 184.61 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:58,928 INFO L168 Benchmark]: TraceAbstraction took 16790.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 200.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 215.8 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:58,928 INFO L168 Benchmark]: Witness Printer took 29.82 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 11.5 GB. [2018-12-02 05:34:58,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 327.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.61 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 184.61 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16790.99 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 200.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 215.8 MB. Max. memory is 11.5 GB. * Witness Printer took 29.82 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 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, 16.7s OverallTime, 11 OverallIterations, 11 TraceHistogramMax, 11.2s 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, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 694 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.0s 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...