./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/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 814ad0e6afd77f926a64080aad9867e43891a945 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/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 814ad0e6afd77f926a64080aad9867e43891a945 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:07:10,029 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:07:10,030 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:07:10,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:07:10,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:07:10,039 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:07:10,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:07:10,041 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:07:10,042 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:07:10,043 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:07:10,044 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:07:10,044 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:07:10,044 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:07:10,045 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:07:10,046 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:07:10,046 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:07:10,047 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:07:10,048 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:07:10,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:07:10,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:07:10,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:07:10,052 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:07:10,053 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:07:10,054 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:07:10,054 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:07:10,054 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:07:10,055 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:07:10,056 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:07:10,056 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:07:10,057 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:07:10,057 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:07:10,057 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:07:10,058 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:07:10,058 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:07:10,058 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:07:10,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:07:10,059 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 07:07:10,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:07:10,069 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:07:10,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:07:10,070 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:07:10,070 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 07:07:10,070 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 07:07:10,070 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 07:07:10,070 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 07:07:10,071 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 07:07:10,071 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 07:07:10,071 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 07:07:10,071 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 07:07:10,071 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 07:07:10,072 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:07:10,072 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:07:10,073 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:07:10,073 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:07:10,074 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:07:10,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 07:07:10,075 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 07:07:10,075 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_bdd58118-062e-4169-b553-c8e890beb290/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 -> 814ad0e6afd77f926a64080aad9867e43891a945 [2018-11-23 07:07:10,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:07:10,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:07:10,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:07:10,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:07:10,112 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:07:10,112 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-11-23 07:07:10,154 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/6496e886c/7f50f771d2ba4d9a9a2fd524843175b6/FLAG6f1d23a24 [2018-11-23 07:07:10,555 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:07:10,555 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-11-23 07:07:10,567 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/6496e886c/7f50f771d2ba4d9a9a2fd524843175b6/FLAG6f1d23a24 [2018-11-23 07:07:10,931 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/6496e886c/7f50f771d2ba4d9a9a2fd524843175b6 [2018-11-23 07:07:10,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:07:10,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:07:10,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:07:10,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:07:10,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:07:10,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:07:10" (1/1) ... [2018-11-23 07:07:10,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83d9f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:10, skipping insertion in model container [2018-11-23 07:07:10,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:07:10" (1/1) ... [2018-11-23 07:07:10,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:07:10,983 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:07:11,264 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:07:11,322 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:07:11,389 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:07:11,432 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:07:11,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11 WrapperNode [2018-11-23 07:07:11,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:07:11,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:07:11,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:07:11,433 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:07:11,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:07:11,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:07:11,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:07:11,464 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:07:11,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... [2018-11-23 07:07:11,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:07:11,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:07:11,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:07:11,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:07:11,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:07:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-11-23 07:07:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-11-23 07:07:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 07:07:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 07:07:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 07:07:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 07:07:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 07:07:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:07:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:07:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-11-23 07:07:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-11-23 07:07:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-11-23 07:07:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-11-23 07:07:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 07:07:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:07:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:07:14,288 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:07:14,288 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 07:07:14,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:07:14 BoogieIcfgContainer [2018-11-23 07:07:14,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:07:14,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:07:14,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:07:14,291 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:07:14,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:07:10" (1/3) ... [2018-11-23 07:07:14,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816dedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:07:14, skipping insertion in model container [2018-11-23 07:07:14,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:07:11" (2/3) ... [2018-11-23 07:07:14,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5816dedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:07:14, skipping insertion in model container [2018-11-23 07:07:14,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:07:14" (3/3) ... [2018-11-23 07:07:14,294 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-11-23 07:07:14,300 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:07:14,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 07:07:14,314 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 07:07:14,336 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:07:14,336 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:07:14,336 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:07:14,336 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:07:14,337 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:07:14,337 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:07:14,337 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:07:14,337 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:07:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-11-23 07:07:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 07:07:14,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:14,356 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:07:14,358 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:14,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:14,362 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-11-23 07:07:14,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:14,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:14,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:14,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:14,397 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:07:16,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:07:16,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:07:16,140 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:16,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:07:16,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:07:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:07:16,157 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-11-23 07:07:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:07:16,212 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-11-23 07:07:16,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:07:16,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 07:07:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:07:16,223 INFO L225 Difference]: With dead ends: 212 [2018-11-23 07:07:16,223 INFO L226 Difference]: Without dead ends: 104 [2018-11-23 07:07:16,226 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:07:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-23 07:07:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-11-23 07:07:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-23 07:07:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-11-23 07:07:16,270 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-11-23 07:07:16,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:07:16,270 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-11-23 07:07:16,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:07:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-11-23 07:07:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 07:07:16,272 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:16,272 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] [2018-11-23 07:07:16,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:16,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-11-23 07:07:16,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:16,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:16,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:16,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:16,275 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:07:16,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:07:16,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:07:16,337 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:16,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:07:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:07:16,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:07:16,339 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-11-23 07:07:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:07:16,377 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-11-23 07:07:16,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:07:16,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-23 07:07:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:07:16,380 INFO L225 Difference]: With dead ends: 197 [2018-11-23 07:07:16,380 INFO L226 Difference]: Without dead ends: 103 [2018-11-23 07:07:16,381 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:07:16,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-23 07:07:16,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-11-23 07:07:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-23 07:07:16,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-11-23 07:07:16,392 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-11-23 07:07:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:07:16,393 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-11-23 07:07:16,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:07:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-11-23 07:07:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 07:07:16,394 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:16,394 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] [2018-11-23 07:07:16,394 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:16,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:16,394 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-11-23 07:07:16,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:16,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:16,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:16,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:16,396 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 07:07:18,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:07:18,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:07:18,080 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:18,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:07:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:07:18,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:07:18,081 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 5 states. [2018-11-23 07:07:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:07:18,126 INFO L93 Difference]: Finished difference Result 189 states and 279 transitions. [2018-11-23 07:07:18,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:07:18,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-11-23 07:07:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:07:18,130 INFO L225 Difference]: With dead ends: 189 [2018-11-23 07:07:18,130 INFO L226 Difference]: Without dead ends: 181 [2018-11-23 07:07:18,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 07:07:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-11-23 07:07:18,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2018-11-23 07:07:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-23 07:07:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 268 transitions. [2018-11-23 07:07:18,153 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 268 transitions. Word has length 23 [2018-11-23 07:07:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:07:18,154 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 268 transitions. [2018-11-23 07:07:18,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:07:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 268 transitions. [2018-11-23 07:07:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 07:07:18,156 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:18,157 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:07:18,157 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:18,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:18,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1967376110, now seen corresponding path program 1 times [2018-11-23 07:07:18,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:18,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:18,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:18,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:18,159 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 07:07:20,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:07:20,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 07:07:20,052 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:20,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 07:07:20,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 07:07:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:07:20,053 INFO L87 Difference]: Start difference. First operand 180 states and 268 transitions. Second operand 4 states. [2018-11-23 07:07:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:07:22,186 INFO L93 Difference]: Finished difference Result 365 states and 553 transitions. [2018-11-23 07:07:22,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:07:22,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-11-23 07:07:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:07:22,190 INFO L225 Difference]: With dead ends: 365 [2018-11-23 07:07:22,190 INFO L226 Difference]: Without dead ends: 352 [2018-11-23 07:07:22,190 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:07:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-11-23 07:07:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 341. [2018-11-23 07:07:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-11-23 07:07:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 521 transitions. [2018-11-23 07:07:22,220 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 521 transitions. Word has length 79 [2018-11-23 07:07:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:07:22,220 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 521 transitions. [2018-11-23 07:07:22,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 07:07:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 521 transitions. [2018-11-23 07:07:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 07:07:22,224 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:22,225 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:07:22,225 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:22,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:22,225 INFO L82 PathProgramCache]: Analyzing trace with hash -677381746, now seen corresponding path program 1 times [2018-11-23 07:07:22,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:22,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:22,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:22,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:22,228 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:23,986 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 07:07:23,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:07:23,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 07:07:23,987 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:23,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 07:07:23,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 07:07:23,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 07:07:23,988 INFO L87 Difference]: Start difference. First operand 341 states and 521 transitions. Second operand 4 states. [2018-11-23 07:07:26,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:07:26,107 INFO L93 Difference]: Finished difference Result 590 states and 885 transitions. [2018-11-23 07:07:26,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:07:26,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-11-23 07:07:26,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:07:26,110 INFO L225 Difference]: With dead ends: 590 [2018-11-23 07:07:26,110 INFO L226 Difference]: Without dead ends: 265 [2018-11-23 07:07:26,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:07:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-11-23 07:07:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 257. [2018-11-23 07:07:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-11-23 07:07:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 371 transitions. [2018-11-23 07:07:26,130 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 371 transitions. Word has length 79 [2018-11-23 07:07:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:07:26,130 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 371 transitions. [2018-11-23 07:07:26,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 07:07:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 371 transitions. [2018-11-23 07:07:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 07:07:26,132 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:07:26,132 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:07:26,132 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:07:26,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:26,133 INFO L82 PathProgramCache]: Analyzing trace with hash 616356910, now seen corresponding path program 1 times [2018-11-23 07:07:26,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:07:26,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:26,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:07:26,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:07:26,134 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:07:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:07:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-23 07:07:27,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:07:27,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:07:27,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-11-23 07:07:27,796 INFO L202 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [22], [28], [33], [38], [54], [55], [61], [63], [69], [71], [73], [77], [81], [84], [86], [89], [96], [109], [111], [124], [126], [130], [131], [132], [135], [137], [150], [151], [152], [155], [157], [161], [164], [166], [172], [177], [179], [180], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [277], [278], [283], [285], [286], [291], [292], [293] [2018-11-23 07:07:27,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 07:07:27,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 07:07:35,495 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 07:07:35,496 INFO L272 AbstractInterpreter]: Visited 29 different actions 53 times. Merged at 5 different actions 16 times. Widened at 1 different actions 1 times. Performed 1311 root evaluator evaluations with a maximum evaluation depth of 7. Performed 1311 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Found 5 fixpoints after 3 different actions. Largest state had 299 variables. [2018-11-23 07:07:35,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:07:35,519 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 07:07:39,068 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 62.49% of their original sizes. [2018-11-23 07:07:39,068 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 07:07:39,229 INFO L415 sIntCurrentIteration]: We unified 78 AI predicates to 78 [2018-11-23 07:07:39,229 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 07:07:39,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 07:07:39,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-11-23 07:07:39,230 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:07:39,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 07:07:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 07:07:39,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:07:39,231 INFO L87 Difference]: Start difference. First operand 257 states and 371 transitions. Second operand 14 states. [2018-11-23 07:08:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:06,746 INFO L93 Difference]: Finished difference Result 502 states and 729 transitions. [2018-11-23 07:08:06,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 07:08:06,746 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-11-23 07:08:06,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:06,748 INFO L225 Difference]: With dead ends: 502 [2018-11-23 07:08:06,748 INFO L226 Difference]: Without dead ends: 267 [2018-11-23 07:08:06,749 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-11-23 07:08:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-11-23 07:08:06,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2018-11-23 07:08:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-11-23 07:08:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 382 transitions. [2018-11-23 07:08:06,764 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 382 transitions. Word has length 79 [2018-11-23 07:08:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:06,764 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 382 transitions. [2018-11-23 07:08:06,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 07:08:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 382 transitions. [2018-11-23 07:08:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 07:08:06,765 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:06,766 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:08:06,766 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:06,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1749547503, now seen corresponding path program 1 times [2018-11-23 07:08:06,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:06,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:06,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:06,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:06,767 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-11-23 07:08:08,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:08:08,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 07:08:08,330 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 07:08:08,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:08:08,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:08:08,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:08:08,331 INFO L87 Difference]: Start difference. First operand 266 states and 382 transitions. Second operand 8 states. [2018-11-23 07:08:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:10,718 INFO L93 Difference]: Finished difference Result 613 states and 926 transitions. [2018-11-23 07:08:10,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 07:08:10,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-11-23 07:08:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:10,725 INFO L225 Difference]: With dead ends: 613 [2018-11-23 07:08:10,725 INFO L226 Difference]: Without dead ends: 378 [2018-11-23 07:08:10,726 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:08:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-11-23 07:08:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 275. [2018-11-23 07:08:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-11-23 07:08:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 409 transitions. [2018-11-23 07:08:10,747 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 409 transitions. Word has length 79 [2018-11-23 07:08:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:10,748 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 409 transitions. [2018-11-23 07:08:10,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:08:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 409 transitions. [2018-11-23 07:08:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-23 07:08:10,749 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:10,749 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:08:10,750 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:10,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -912615794, now seen corresponding path program 1 times [2018-11-23 07:08:10,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:10,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:10,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:10,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:10,751 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-23 07:08:12,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:12,337 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:08:12,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-11-23 07:08:12,338 INFO L202 CegarAbsIntRunner]: [0], [5], [7], [12], [14], [19], [22], [28], [33], [38], [54], [55], [61], [63], [69], [71], [73], [77], [81], [84], [86], [89], [96], [109], [111], [124], [126], [130], [131], [132], [135], [137], [150], [151], [152], [156], [157], [161], [164], [166], [172], [177], [179], [180], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [277], [278], [283], [285], [286], [291], [292], [293] [2018-11-23 07:08:12,343 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 07:08:12,344 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 07:08:15,707 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-23 07:08:15,707 INFO L272 AbstractInterpreter]: Visited 64 different actions 96 times. Merged at 5 different actions 11 times. Widened at 1 different actions 1 times. Performed 1872 root evaluator evaluations with a maximum evaluation depth of 9. Performed 1872 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Found 4 fixpoints after 3 different actions. Largest state had 299 variables. [2018-11-23 07:08:15,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:15,718 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-23 07:08:15,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:15,718 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:08:15,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:15,733 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 07:08:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:15,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:08:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-23 07:08:15,892 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:08:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-23 07:08:16,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 07:08:16,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2018-11-23 07:08:16,039 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 07:08:16,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:08:16,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:08:16,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:08:16,040 INFO L87 Difference]: Start difference. First operand 275 states and 409 transitions. Second operand 5 states. [2018-11-23 07:08:16,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:16,062 INFO L93 Difference]: Finished difference Result 546 states and 815 transitions. [2018-11-23 07:08:16,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 07:08:16,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-11-23 07:08:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:16,064 INFO L225 Difference]: With dead ends: 546 [2018-11-23 07:08:16,064 INFO L226 Difference]: Without dead ends: 278 [2018-11-23 07:08:16,066 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:08:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-11-23 07:08:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2018-11-23 07:08:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-23 07:08:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 411 transitions. [2018-11-23 07:08:16,081 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 411 transitions. Word has length 79 [2018-11-23 07:08:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:16,081 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 411 transitions. [2018-11-23 07:08:16,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:08:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 411 transitions. [2018-11-23 07:08:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-23 07:08:16,082 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:16,082 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2018-11-23 07:08:16,083 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:16,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:16,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1519742352, now seen corresponding path program 2 times [2018-11-23 07:08:16,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:16,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:16,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:16,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:16,086 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-23 07:08:17,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:17,632 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:08:17,632 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 07:08:17,632 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 07:08:17,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:17,633 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:08:17,649 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:08:17,649 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 07:08:29,799 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-23 07:08:29,799 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:08:29,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:08:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-23 07:08:29,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:08:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-23 07:08:29,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 07:08:29,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2018-11-23 07:08:29,929 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 07:08:29,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 07:08:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 07:08:29,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:08:29,930 INFO L87 Difference]: Start difference. First operand 277 states and 411 transitions. Second operand 7 states. [2018-11-23 07:08:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:30,003 INFO L93 Difference]: Finished difference Result 566 states and 840 transitions. [2018-11-23 07:08:30,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 07:08:30,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2018-11-23 07:08:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:30,005 INFO L225 Difference]: With dead ends: 566 [2018-11-23 07:08:30,005 INFO L226 Difference]: Without dead ends: 296 [2018-11-23 07:08:30,006 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-11-23 07:08:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-11-23 07:08:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 288. [2018-11-23 07:08:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-11-23 07:08:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2018-11-23 07:08:30,019 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 81 [2018-11-23 07:08:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:30,020 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2018-11-23 07:08:30,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 07:08:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2018-11-23 07:08:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-23 07:08:30,021 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:30,021 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 2, 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, 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, 1, 1] [2018-11-23 07:08:30,021 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:30,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1820662229, now seen corresponding path program 3 times [2018-11-23 07:08:30,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:30,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:30,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:08:30,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:30,022 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-23 07:08:31,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:31,557 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:08:31,557 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 07:08:31,557 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 07:08:31,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:31,557 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:08:31,564 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 07:08:31,564 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-23 07:08:31,672 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 07:08:31,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:08:31,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:08:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-23 07:08:31,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:08:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-11-23 07:08:31,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 07:08:31,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-23 07:08:31,776 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 07:08:31,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 07:08:31,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 07:08:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:08:31,777 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand 6 states. [2018-11-23 07:08:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:31,807 INFO L93 Difference]: Finished difference Result 568 states and 838 transitions. [2018-11-23 07:08:31,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:08:31,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-11-23 07:08:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:31,809 INFO L225 Difference]: With dead ends: 568 [2018-11-23 07:08:31,809 INFO L226 Difference]: Without dead ends: 305 [2018-11-23 07:08:31,810 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:08:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-11-23 07:08:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 297. [2018-11-23 07:08:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-11-23 07:08:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 433 transitions. [2018-11-23 07:08:31,822 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 433 transitions. Word has length 92 [2018-11-23 07:08:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:31,822 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 433 transitions. [2018-11-23 07:08:31,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 07:08:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 433 transitions. [2018-11-23 07:08:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-23 07:08:31,823 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:31,823 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 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, 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, 1, 1] [2018-11-23 07:08:31,824 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:31,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1007390222, now seen corresponding path program 4 times [2018-11-23 07:08:31,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:31,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:31,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:08:31,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:31,825 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-23 07:08:33,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:33,377 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:08:33,377 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 07:08:33,377 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 07:08:33,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:33,377 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:08:33,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:33,392 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-23 07:08:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:33,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:08:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-23 07:08:33,524 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:08:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-23 07:08:33,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-23 07:08:33,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-11-23 07:08:33,674 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-23 07:08:33,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 07:08:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 07:08:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:08:33,675 INFO L87 Difference]: Start difference. First operand 297 states and 433 transitions. Second operand 7 states. [2018-11-23 07:08:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:08:33,719 INFO L93 Difference]: Finished difference Result 577 states and 848 transitions. [2018-11-23 07:08:33,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 07:08:33,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-11-23 07:08:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:08:33,721 INFO L225 Difference]: With dead ends: 577 [2018-11-23 07:08:33,721 INFO L226 Difference]: Without dead ends: 314 [2018-11-23 07:08:33,722 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:08:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-11-23 07:08:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2018-11-23 07:08:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-11-23 07:08:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 443 transitions. [2018-11-23 07:08:33,741 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 443 transitions. Word has length 101 [2018-11-23 07:08:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:08:33,741 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 443 transitions. [2018-11-23 07:08:33,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 07:08:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 443 transitions. [2018-11-23 07:08:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-23 07:08:33,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:08:33,743 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1] [2018-11-23 07:08:33,743 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:08:33,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:08:33,743 INFO L82 PathProgramCache]: Analyzing trace with hash -786549237, now seen corresponding path program 5 times [2018-11-23 07:08:33,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 07:08:33,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:33,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:08:33,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:08:33,744 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 07:08:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:08:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-23 07:08:35,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:35,424 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 07:08:35,424 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-23 07:08:35,424 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-23 07:08:35,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:08:35,424 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:08:35,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:08:35,442 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-23 07:09:11,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-23 07:09:11,729 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:09:11,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:09:11,765 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 123 [2018-11-23 07:09:11,790 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:11,813 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 120 treesize of output 121 [2018-11-23 07:09:11,961 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-11-23 07:09:11,964 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:11,965 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:11,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 107 [2018-11-23 07:09:12,020 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,021 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,022 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,024 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,025 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,026 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 102 [2018-11-23 07:09:12,086 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,087 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,088 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,089 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,090 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,091 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,092 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 106 [2018-11-23 07:09:12,170 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,172 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,173 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,174 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,175 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,176 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,177 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,179 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,179 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 117 [2018-11-23 07:09:12,245 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,246 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,246 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,247 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,248 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,249 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,249 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,250 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,251 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,252 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,252 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-11-23 07:09:12,259 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-11-23 07:09:12,259 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,291 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,320 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,359 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,404 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,440 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,502 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,508 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,511 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,527 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 117 [2018-11-23 07:09:12,694 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-11-23 07:09:12,698 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,700 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,701 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,703 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,705 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,706 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 108 [2018-11-23 07:09:12,777 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,779 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,780 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,781 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,783 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,784 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,785 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,786 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 106 [2018-11-23 07:09:12,860 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,861 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,862 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,864 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,865 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,866 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,867 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,868 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,869 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 119 [2018-11-23 07:09:12,937 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,938 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,940 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,941 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,942 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,943 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,944 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,947 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,948 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,951 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:12,952 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-11-23 07:09:12,956 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-11-23 07:09:12,956 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:12,987 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,017 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,048 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,081 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,142 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,143 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,150 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,152 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,155 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,157 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,160 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,173 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 116 [2018-11-23 07:09:13,360 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-11-23 07:09:13,364 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,365 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,367 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,370 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,372 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,373 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,374 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,376 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,380 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,383 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,393 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 124 [2018-11-23 07:09:13,595 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-11-23 07:09:13,598 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,600 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,601 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,602 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,603 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,604 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,605 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,606 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,607 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,608 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 127 [2018-11-23 07:09:13,677 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,678 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,679 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,680 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,681 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,682 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,683 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,684 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,685 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,686 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,687 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,688 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-11-23 07:09:13,692 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-11-23 07:09:13,692 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,726 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,760 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:13,829 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,831 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,832 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,833 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,835 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,836 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,837 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,838 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,839 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,841 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,844 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,847 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,850 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:13,862 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 139 [2018-11-23 07:09:14,121 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-11-23 07:09:14,125 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,126 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,139 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,140 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,141 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,142 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,143 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,144 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,145 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,145 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,146 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,147 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 141 [2018-11-23 07:09:14,151 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-11-23 07:09:14,152 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:14,213 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:14,290 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,291 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,292 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,293 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,294 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,294 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,295 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,296 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,297 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,299 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,300 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,301 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,301 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,302 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,303 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,306 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,313 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 27 disjoint index pairs (out of 28 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 163 [2018-11-23 07:09:14,317 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 149 [2018-11-23 07:09:14,317 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:14,460 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,460 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,461 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,462 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,463 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,463 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,464 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,465 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,466 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,467 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,469 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,469 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,471 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:14,476 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 159 [2018-11-23 07:09:14,477 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-11-23 07:09:14,633 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 07:09:14,792 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:09:14,986 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-23 07:09:15,216 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,218 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,219 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,220 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,222 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,223 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,225 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,226 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 106 [2018-11-23 07:09:15,295 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,296 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,297 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,299 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,300 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,301 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,302 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,303 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,304 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,305 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 119 [2018-11-23 07:09:15,371 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,372 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,373 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,374 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,374 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,375 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,376 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,376 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,377 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,378 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:15,378 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 137 [2018-11-23 07:09:15,383 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 22 disjoint index pairs (out of 21 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 129 [2018-11-23 07:09:15,384 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:15,433 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:15,468 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:15,503 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:15,735 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-23 07:09:16,016 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-11-23 07:09:16,318 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-23 07:09:16,680 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-11-23 07:09:17,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 14 dim-0 vars, and 8 xjuncts. [2018-11-23 07:09:17,003 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 3 variables, input treesize:142, output treesize:1005 [2018-11-23 07:09:17,538 WARN L180 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 258 [2018-11-23 07:09:19,724 WARN L180 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 419 [2018-11-23 07:09:19,733 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,736 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,738 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,740 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,742 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,745 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,747 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,750 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,752 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,754 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,756 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,759 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,761 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,764 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,766 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:19,767 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 246 [2018-11-23 07:09:20,053 WARN L180 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2018-11-23 07:09:20,057 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,059 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,060 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,062 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,063 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,065 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,066 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,068 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,069 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,070 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,072 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,073 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,074 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,076 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,077 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,078 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,080 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:20,081 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 249 [2018-11-23 07:09:20,086 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 246 [2018-11-23 07:09:20,101 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:20,102 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:20,181 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:20,261 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:20,357 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:21,465 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,468 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,470 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,472 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,475 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,477 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,480 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,482 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,484 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,486 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,488 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,490 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,492 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,494 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,497 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,498 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 226 [2018-11-23 07:09:21,776 WARN L180 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2018-11-23 07:09:21,781 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,783 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,784 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,785 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,787 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,788 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,790 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,791 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,793 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,794 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,795 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,797 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,798 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,800 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,801 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,803 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,804 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:21,805 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 251 [2018-11-23 07:09:21,810 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 246 [2018-11-23 07:09:21,821 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:21,821 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:21,898 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:21,982 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:22,086 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:23,197 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,200 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,202 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,204 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,206 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,209 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,211 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,213 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,216 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,218 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,221 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,223 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,225 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,227 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,228 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 250 [2018-11-23 07:09:23,540 WARN L180 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2018-11-23 07:09:23,545 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,546 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,547 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,549 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,550 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,552 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,553 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,554 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,556 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,557 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,559 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,560 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,561 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,563 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,564 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,565 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,567 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:23,568 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 249 [2018-11-23 07:09:23,573 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 246 [2018-11-23 07:09:23,587 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:23,588 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:23,663 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:23,748 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:23,844 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:24,951 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,954 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,956 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,958 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,961 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,963 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,965 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,968 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,970 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,973 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,974 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,977 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,978 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,981 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,983 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:24,984 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 239 [2018-11-23 07:09:25,258 WARN L180 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 99 [2018-11-23 07:09:25,263 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,264 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,266 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,267 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,269 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,270 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,272 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,283 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,285 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,287 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,289 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,291 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,293 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,295 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,297 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,299 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,301 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:25,302 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 246 [2018-11-23 07:09:25,311 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 243 [2018-11-23 07:09:25,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 236 [2018-11-23 07:09:25,323 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:25,395 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:25,503 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:25,597 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:26,656 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,659 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,660 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,661 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,661 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,662 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,663 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,664 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,665 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,666 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,666 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,667 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,668 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,669 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,670 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,671 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 248 [2018-11-23 07:09:26,963 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 101 [2018-11-23 07:09:26,967 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,969 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,970 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,972 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,973 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,975 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,976 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,977 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,979 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,980 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,982 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,983 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,985 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,988 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,989 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:26,991 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 249 [2018-11-23 07:09:27,012 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 246 [2018-11-23 07:09:27,026 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:27,027 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:27,108 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:27,188 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:27,282 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:28,445 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,448 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,450 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,454 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,456 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,459 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,461 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,463 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,466 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,468 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,470 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,472 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,474 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,476 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,478 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,479 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 37 disjoint index pairs (out of 36 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 252 [2018-11-23 07:09:28,777 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 101 [2018-11-23 07:09:28,782 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,784 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,785 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,787 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,788 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,790 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,791 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,792 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,794 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,795 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,797 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,798 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,800 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,801 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,802 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,804 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,805 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:28,806 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 251 [2018-11-23 07:09:28,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 246 [2018-11-23 07:09:28,824 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:28,825 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:28,901 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:28,982 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:29,079 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:29,984 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,985 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,987 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,988 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,988 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,989 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,989 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,990 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,992 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,993 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,994 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,994 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,995 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,996 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,996 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,997 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:29,998 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:30,000 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:30,015 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 44 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 286 [2018-11-23 07:09:31,048 WARN L180 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 178 DAG size of output: 132 [2018-11-23 07:09:31,053 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,055 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,056 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,057 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,059 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,060 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,061 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,063 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,064 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,065 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,067 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,068 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,069 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,070 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,072 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,073 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,074 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,075 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 280 [2018-11-23 07:09:31,081 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 246 [2018-11-23 07:09:31,094 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:31,095 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:31,170 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:31,283 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:31,498 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,500 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,502 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,503 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,504 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,506 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,507 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,509 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,510 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,512 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,513 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,515 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,516 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,517 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,521 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,522 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,524 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,525 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,527 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,530 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,532 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,534 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,535 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,537 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,541 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,551 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 54 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 314 [2018-11-23 07:09:31,568 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 310 treesize of output 315 [2018-11-23 07:09:31,584 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 302 [2018-11-23 07:09:31,585 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:31,977 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,979 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,980 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,982 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,983 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,985 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,986 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,988 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,990 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,991 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:31,994 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:32,000 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 245 treesize of output 312 [2018-11-23 07:09:32,001 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 2 xjuncts. [2018-11-23 07:09:32,526 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 07:09:33,093 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,094 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,096 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,097 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,098 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,099 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,100 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,101 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,102 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,103 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:09:33,104 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 277 [2018-11-23 07:09:33,116 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 240 [2018-11-23 07:09:33,117 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-11-23 07:09:33,234 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:09:33,763 INFO L267 ElimStorePlain]: Start of recursive call 30: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:09:34,366 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-23 07:09:35,842 INFO L267 ElimStorePlain]: Start of recursive call 1: 27 dim-0 vars, 7 dim-1 vars, End of recursive call: 41 dim-0 vars, and 11 xjuncts. [2018-11-23 07:09:35,843 INFO L202 ElimStorePlain]: Needed 35 recursive calls to eliminate 34 variables, input treesize:1155, output treesize:2684 [2018-11-23 07:09:40,503 WARN L180 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 857 DAG size of output: 657 [2018-11-23 07:10:05,105 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-23 07:10:05,306 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:10:05,306 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:191) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) 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:126) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2018-11-23 07:10:05,309 INFO L168 Benchmark]: Toolchain (without parser) took 174375.03 ms. Allocated memory was 1.0 GB in the beginning and 8.9 GB in the end (delta: 7.9 GB). Free memory was 956.4 MB in the beginning and 4.4 GB in the end (delta: -3.4 GB). Peak memory consumption was 4.5 GB. Max. memory is 11.5 GB. [2018-11-23 07:10:05,309 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:10:05,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 497.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. [2018-11-23 07:10:05,309 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:10:05,310 INFO L168 Benchmark]: Boogie Preprocessor took 60.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:10:05,310 INFO L168 Benchmark]: RCFGBuilder took 2764.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.4 MB in the end (delta: 169.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:10:05,310 INFO L168 Benchmark]: TraceAbstraction took 171018.83 ms. Allocated memory was 1.2 GB in the beginning and 8.9 GB in the end (delta: 7.8 GB). Free memory was 931.4 MB in the beginning and 4.4 GB in the end (delta: -3.4 GB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. [2018-11-23 07:10:05,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 497.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -151.4 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.55 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 60.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2764.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 931.4 MB in the end (delta: 169.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 171018.83 ms. Allocated memory was 1.2 GB in the beginning and 8.9 GB in the end (delta: 7.8 GB). Free memory was 931.4 MB in the beginning and 4.4 GB in the end (delta: -3.4 GB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 07:10:06,711 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:10:06,712 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:10:06,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:10:06,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:10:06,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:10:06,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:10:06,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:10:06,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:10:06,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:10:06,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:10:06,726 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:10:06,727 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:10:06,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:10:06,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:10:06,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:10:06,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:10:06,731 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:10:06,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:10:06,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:10:06,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:10:06,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:10:06,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:10:06,737 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:10:06,737 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:10:06,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:10:06,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:10:06,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:10:06,740 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:10:06,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:10:06,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:10:06,741 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:10:06,741 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:10:06,741 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:10:06,742 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:10:06,742 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:10:06,742 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 07:10:06,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:10:06,753 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:10:06,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:10:06,754 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:10:06,754 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 07:10:06,754 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 07:10:06,754 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 07:10:06,755 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 07:10:06,755 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 07:10:06,755 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 07:10:06,755 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:10:06,755 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 07:10:06,756 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:10:06,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:10:06,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:10:06,758 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 07:10:06,758 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 07:10:06,758 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_bdd58118-062e-4169-b553-c8e890beb290/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 -> 814ad0e6afd77f926a64080aad9867e43891a945 [2018-11-23 07:10:06,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:10:06,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:10:06,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:10:06,804 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:10:06,804 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:10:06,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-11-23 07:10:06,843 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/e8cd430d4/1c602a8d4dc747d4b8a03dfe1142c103/FLAGd478f48bf [2018-11-23 07:10:07,199 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:10:07,200 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-11-23 07:10:07,211 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/e8cd430d4/1c602a8d4dc747d4b8a03dfe1142c103/FLAGd478f48bf [2018-11-23 07:10:07,222 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/data/e8cd430d4/1c602a8d4dc747d4b8a03dfe1142c103 [2018-11-23 07:10:07,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:10:07,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:10:07,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:10:07,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:10:07,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:10:07,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2edc941c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07, skipping insertion in model container [2018-11-23 07:10:07,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:10:07,277 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:10:07,583 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:10:07,603 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:10:07,741 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:10:07,780 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:10:07,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07 WrapperNode [2018-11-23 07:10:07,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:10:07,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:10:07,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:10:07,781 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:10:07,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:10:07,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:10:07,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:10:07,816 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:10:07,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... [2018-11-23 07:10:07,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:10:07,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:10:07,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:10:07,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:10:07,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:10:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-11-23 07:10:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-11-23 07:10:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-23 07:10:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 07:10:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-23 07:10:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 07:10:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 07:10:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-23 07:10:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-23 07:10:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-23 07:10:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-23 07:10:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:10:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:10:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:10:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:10:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-23 07:10:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-11-23 07:10:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-11-23 07:10:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-23 07:10:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-11-23 07:10:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-11-23 07:10:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-11-23 07:10:07,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-11-23 07:10:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:10:07,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:10:11,160 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:10:11,160 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 07:10:11,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:10:11 BoogieIcfgContainer [2018-11-23 07:10:11,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:10:11,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:10:11,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:10:11,163 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:10:11,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:10:07" (1/3) ... [2018-11-23 07:10:11,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ef0d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:10:11, skipping insertion in model container [2018-11-23 07:10:11,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:10:07" (2/3) ... [2018-11-23 07:10:11,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ef0d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:10:11, skipping insertion in model container [2018-11-23 07:10:11,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:10:11" (3/3) ... [2018-11-23 07:10:11,165 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-11-23 07:10:11,171 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:10:11,175 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 07:10:11,185 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 07:10:11,204 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:10:11,205 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:10:11,205 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:10:11,205 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:10:11,205 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:10:11,205 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:10:11,206 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:10:11,206 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:10:11,206 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:10:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-11-23 07:10:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 07:10:11,221 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:11,222 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:11,223 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:11,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-11-23 07:10:11,233 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:11,233 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:11,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:11,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:10:11,674 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:11,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:10:11,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:10:11,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:10:11,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:10:11,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:10:11,691 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-11-23 07:10:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:11,936 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-11-23 07:10:11,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:10:11,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-23 07:10:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:11,947 INFO L225 Difference]: With dead ends: 212 [2018-11-23 07:10:11,947 INFO L226 Difference]: Without dead ends: 104 [2018-11-23 07:10:11,950 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:10:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-23 07:10:11,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-11-23 07:10:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-23 07:10:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-11-23 07:10:11,986 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-11-23 07:10:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:11,986 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-11-23 07:10:11,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:10:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-11-23 07:10:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-23 07:10:11,988 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:11,988 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] [2018-11-23 07:10:11,988 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:11,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:11,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-11-23 07:10:11,989 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:11,989 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:12,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:12,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:10:12,311 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:12,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:10:12,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 07:10:12,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 07:10:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 07:10:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:10:12,318 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-11-23 07:10:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:12,382 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-11-23 07:10:12,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 07:10:12,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-11-23 07:10:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:12,387 INFO L225 Difference]: With dead ends: 197 [2018-11-23 07:10:12,387 INFO L226 Difference]: Without dead ends: 103 [2018-11-23 07:10:12,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 07:10:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-23 07:10:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-11-23 07:10:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-23 07:10:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-11-23 07:10:12,397 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-11-23 07:10:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:12,397 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-11-23 07:10:12,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 07:10:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-11-23 07:10:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-23 07:10:12,398 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:12,399 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] [2018-11-23 07:10:12,399 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:12,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-11-23 07:10:12,400 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:12,400 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:12,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:12,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:10:12,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:10:12,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:10:12,807 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:10:12,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:12,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 07:10:12,959 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:12,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:10:12,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2018-11-23 07:10:12,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 07:10:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 07:10:12,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 07:10:12,978 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 7 states. [2018-11-23 07:10:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:13,288 INFO L93 Difference]: Finished difference Result 201 states and 293 transitions. [2018-11-23 07:10:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 07:10:13,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-23 07:10:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:13,289 INFO L225 Difference]: With dead ends: 201 [2018-11-23 07:10:13,289 INFO L226 Difference]: Without dead ends: 106 [2018-11-23 07:10:13,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-23 07:10:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-11-23 07:10:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-11-23 07:10:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-23 07:10:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2018-11-23 07:10:13,300 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 23 [2018-11-23 07:10:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:13,300 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2018-11-23 07:10:13,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 07:10:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2018-11-23 07:10:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-23 07:10:13,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:13,301 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:13,301 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:13,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2081995969, now seen corresponding path program 1 times [2018-11-23 07:10:13,302 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:13,302 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:13,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:13,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 07:10:13,542 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:13,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:10:13,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 07:10:13,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:10:13,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:10:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:10:13,546 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 8 states. [2018-11-23 07:10:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:15,520 INFO L93 Difference]: Finished difference Result 454 states and 743 transitions. [2018-11-23 07:10:15,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 07:10:15,521 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2018-11-23 07:10:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:15,523 INFO L225 Difference]: With dead ends: 454 [2018-11-23 07:10:15,524 INFO L226 Difference]: Without dead ends: 367 [2018-11-23 07:10:15,524 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-11-23 07:10:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-11-23 07:10:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 267. [2018-11-23 07:10:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-11-23 07:10:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 430 transitions. [2018-11-23 07:10:15,558 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 430 transitions. Word has length 47 [2018-11-23 07:10:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:15,559 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 430 transitions. [2018-11-23 07:10:15,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:10:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 430 transitions. [2018-11-23 07:10:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-23 07:10:15,560 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:15,561 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:15,561 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:15,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:15,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1863141251, now seen corresponding path program 1 times [2018-11-23 07:10:15,562 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:15,562 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:15,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:15,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 07:10:15,770 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:15,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:10:15,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:10:15,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:10:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:10:15,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:10:15,773 INFO L87 Difference]: Start difference. First operand 267 states and 430 transitions. Second operand 5 states. [2018-11-23 07:10:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:16,179 INFO L93 Difference]: Finished difference Result 533 states and 852 transitions. [2018-11-23 07:10:16,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:10:16,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2018-11-23 07:10:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:16,181 INFO L225 Difference]: With dead ends: 533 [2018-11-23 07:10:16,181 INFO L226 Difference]: Without dead ends: 285 [2018-11-23 07:10:16,182 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:10:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-11-23 07:10:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2018-11-23 07:10:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-11-23 07:10:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 383 transitions. [2018-11-23 07:10:16,207 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 383 transitions. Word has length 47 [2018-11-23 07:10:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:16,208 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 383 transitions. [2018-11-23 07:10:16,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:10:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 383 transitions. [2018-11-23 07:10:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-23 07:10:16,210 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:16,210 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:16,210 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:16,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1470114241, now seen corresponding path program 1 times [2018-11-23 07:10:16,211 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:16,211 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:16,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:16,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 07:10:16,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 07:10:16,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:10:16,605 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:10:16,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:16,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 07:10:16,827 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:10:16,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:10:16,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4] total 14 [2018-11-23 07:10:16,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 07:10:16,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 07:10:16,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:10:16,845 INFO L87 Difference]: Start difference. First operand 271 states and 383 transitions. Second operand 14 states. [2018-11-23 07:10:20,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:20,625 INFO L93 Difference]: Finished difference Result 583 states and 815 transitions. [2018-11-23 07:10:20,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 07:10:20,625 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2018-11-23 07:10:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:20,627 INFO L225 Difference]: With dead ends: 583 [2018-11-23 07:10:20,627 INFO L226 Difference]: Without dead ends: 316 [2018-11-23 07:10:20,628 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2018-11-23 07:10:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-11-23 07:10:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2018-11-23 07:10:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-11-23 07:10:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 410 transitions. [2018-11-23 07:10:20,645 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 410 transitions. Word has length 47 [2018-11-23 07:10:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:20,645 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 410 transitions. [2018-11-23 07:10:20,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 07:10:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 410 transitions. [2018-11-23 07:10:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-23 07:10:20,646 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:20,647 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:20,647 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:20,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1120246192, now seen corresponding path program 1 times [2018-11-23 07:10:20,648 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:20,648 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:20,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:20,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-23 07:10:20,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-11-23 07:10:21,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:10:21,127 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:10:21,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:21,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-11-23 07:10:21,402 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-11-23 07:10:21,695 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 07:10:21,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 6, 5] total 10 [2018-11-23 07:10:21,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 07:10:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 07:10:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-23 07:10:21,696 INFO L87 Difference]: Start difference. First operand 298 states and 410 transitions. Second operand 10 states. [2018-11-23 07:10:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:26,445 INFO L93 Difference]: Finished difference Result 857 states and 1230 transitions. [2018-11-23 07:10:26,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 07:10:26,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2018-11-23 07:10:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:26,449 INFO L225 Difference]: With dead ends: 857 [2018-11-23 07:10:26,449 INFO L226 Difference]: Without dead ends: 605 [2018-11-23 07:10:26,450 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-11-23 07:10:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2018-11-23 07:10:26,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 557. [2018-11-23 07:10:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-11-23 07:10:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 766 transitions. [2018-11-23 07:10:26,488 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 766 transitions. Word has length 130 [2018-11-23 07:10:26,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:26,488 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 766 transitions. [2018-11-23 07:10:26,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 07:10:26,489 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 766 transitions. [2018-11-23 07:10:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-23 07:10:26,491 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:26,491 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:10:26,491 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:26,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:26,491 INFO L82 PathProgramCache]: Analyzing trace with hash -178289648, now seen corresponding path program 1 times [2018-11-23 07:10:26,492 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:26,492 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:26,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:27,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-23 07:10:27,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-23 07:10:27,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:10:27,202 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:10:27,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:27,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:27,454 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-11-23 07:10:27,458 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2018-11-23 07:10:27,460 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-23 07:10:27,461 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,465 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,480 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:12, output treesize:16 [2018-11-23 07:10:27,503 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:27,504 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2018-11-23 07:10:27,505 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,521 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,521 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:16 [2018-11-23 07:10:27,541 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:27,542 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-11-23 07:10:27,542 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,545 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,545 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2018-11-23 07:10:27,564 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:27,565 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-11-23 07:10:27,565 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,567 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,567 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:1 [2018-11-23 07:10:27,593 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-23 07:10:27,593 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,599 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,599 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:1 [2018-11-23 07:10:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-23 07:10:27,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 07:10:27,658 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-11-23 07:10:27,658 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,660 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,660 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2018-11-23 07:10:27,745 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-11-23 07:10:27,745 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,749 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:27,749 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:12 [2018-11-23 07:10:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-23 07:10:27,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-23 07:10:27,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 5] total 18 [2018-11-23 07:10:27,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 07:10:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 07:10:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-23 07:10:27,839 INFO L87 Difference]: Start difference. First operand 557 states and 766 transitions. Second operand 18 states. [2018-11-23 07:10:38,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:10:38,981 INFO L93 Difference]: Finished difference Result 1142 states and 1571 transitions. [2018-11-23 07:10:38,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 07:10:38,982 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2018-11-23 07:10:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:10:38,984 INFO L225 Difference]: With dead ends: 1142 [2018-11-23 07:10:38,984 INFO L226 Difference]: Without dead ends: 542 [2018-11-23 07:10:38,986 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 502 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2018-11-23 07:10:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-11-23 07:10:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 510. [2018-11-23 07:10:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2018-11-23 07:10:39,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 691 transitions. [2018-11-23 07:10:39,024 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 691 transitions. Word has length 130 [2018-11-23 07:10:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:10:39,024 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 691 transitions. [2018-11-23 07:10:39,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 07:10:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 691 transitions. [2018-11-23 07:10:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-23 07:10:39,026 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:10:39,026 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 4, 4, 4, 4, 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, 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, 1, 1] [2018-11-23 07:10:39,026 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:10:39,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:10:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash 612811314, now seen corresponding path program 1 times [2018-11-23 07:10:39,027 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 07:10:39,028 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bdd58118-062e-4169-b553-c8e890beb290/bin-2019/utaipan/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 07:10:39,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:10:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:10:52,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:10:52,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-11-23 07:10:52,756 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2018-11-23 07:10:52,885 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2018-11-23 07:10:52,897 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,898 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,909 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,910 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2018-11-23 07:10:52,911 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:52,960 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,963 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:52,963 INFO L683 Elim1Store]: detected equality via solver [2018-11-23 07:10:52,964 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-11-23 07:10:52,965 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:52,978 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,007 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,023 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,023 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:35, output treesize:22 [2018-11-23 07:10:53,324 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 105 [2018-11-23 07:10:53,336 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 07:10:53,336 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,416 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 72 [2018-11-23 07:10:53,426 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-23 07:10:53,426 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,507 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2018-11-23 07:10:53,516 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-11-23 07:10:53,516 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:53,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 50 treesize of output 104 [2018-11-23 07:10:53,709 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-23 07:10:53,738 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 70 [2018-11-23 07:10:53,738 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:55,211 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 56 [2018-11-23 07:10:55,211 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-23 07:10:55,584 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 60 [2018-11-23 07:10:55,584 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-23 07:10:56,382 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 56 [2018-11-23 07:10:56,382 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-23 07:10:56,504 INFO L267 ElimStorePlain]: Start of recursive call 8: 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:10:56,597 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:10:56,705 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:10:56,791 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:10:56,919 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-23 07:10:56,920 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 1 variables, input treesize:215, output treesize:283 [2018-11-23 07:10:57,228 WARN L180 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-23 07:10:58,099 WARN L180 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-11-23 07:10:58,560 WARN L180 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-11-23 07:10:59,453 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2018-11-23 07:10:59,580 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 77 [2018-11-23 07:10:59,592 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:59,595 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 79 [2018-11-23 07:10:59,596 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 07:10:59,722 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:59,726 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:10:59,763 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 82 [2018-11-23 07:10:59,764 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-11-23 07:10:59,860 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-23 07:10:59,973 INFO L267 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: 13 dim-0 vars, and 2 xjuncts. [2018-11-23 07:10:59,973 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:70, output treesize:131 [2018-11-23 07:11:05,132 WARN L180 SmtUtils]: Spent 4.94 s on a formula simplification that was a NOOP. DAG size: 84 [2018-11-23 07:11:05,157 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 69 [2018-11-23 07:11:05,166 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:05,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2018-11-23 07:11:05,169 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:05,195 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2018-11-23 07:11:05,196 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:05,211 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-11-23 07:11:05,211 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:05,220 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:11:05,385 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 89 [2018-11-23 07:11:05,397 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:05,401 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 61 [2018-11-23 07:11:05,401 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:06,016 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 58 [2018-11-23 07:11:06,017 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:06,532 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:06,532 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2018-11-23 07:11:06,532 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:07,022 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:07,025 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:07,027 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:07,028 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:07,038 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:07,044 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 79 [2018-11-23 07:11:07,044 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-23 07:11:07,610 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2018-11-23 07:11:07,610 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:08,025 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:08,029 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:08,031 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:08,059 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 85 [2018-11-23 07:11:08,060 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-11-23 07:11:08,680 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:08,683 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2018-11-23 07:11:08,684 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:09,289 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-11-23 07:11:09,289 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:09,859 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:09,863 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:09,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 67 [2018-11-23 07:11:09,881 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-11-23 07:11:10,557 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 33 [2018-11-23 07:11:10,557 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:10,560 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2018-11-23 07:11:10,560 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,008 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 38 [2018-11-23 07:11:11,008 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,010 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-11-23 07:11:11,011 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,013 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2018-11-23 07:11:11,013 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,017 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 36 [2018-11-23 07:11:11,017 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,423 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2018-11-23 07:11:11,423 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:11,827 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-11-23 07:11:11,828 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:12,225 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:12,229 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2018-11-23 07:11:12,229 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:12,590 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:12,590 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-11-23 07:11:12,590 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:13,112 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2018-11-23 07:11:13,112 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:13,325 INFO L701 Elim1Store]: detected not equals via solver [2018-11-23 07:11:13,328 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2018-11-23 07:11:13,329 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-11-23 07:11:13,416 INFO L267 ElimStorePlain]: Start of recursive call 6: 19 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-23 07:11:13,460 INFO L267 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-23 07:11:13,460 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 17 variables, input treesize:137, output treesize:5 [2018-11-23 07:11:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-11-23 07:11:13,642 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 07:11:13,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:11:13,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-11-23 07:11:13,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 07:11:13,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 07:11:13,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-23 07:11:13,651 INFO L87 Difference]: Start difference. First operand 510 states and 691 transitions. Second operand 15 states. [2018-11-23 07:11:25,491 WARN L180 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2018-11-23 07:11:29,574 WARN L180 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-11-23 07:11:36,902 WARN L180 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2018-11-23 07:11:46,211 WARN L180 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2018-11-23 07:11:49,278 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2018-11-23 07:12:02,543 WARN L180 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-11-23 07:12:03,270 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-23 07:12:03,270 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:651) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:255) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:270) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) 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:126) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-11-23 07:12:03,273 INFO L168 Benchmark]: Toolchain (without parser) took 116047.82 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 390.6 MB). Free memory was 945.4 MB in the beginning and 900.7 MB in the end (delta: 44.8 MB). Peak memory consumption was 435.4 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,273 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:12:03,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,274 INFO L168 Benchmark]: Boogie Preprocessor took 74.04 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,274 INFO L168 Benchmark]: RCFGBuilder took 3270.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 180.9 MB). Peak memory consumption was 180.9 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,274 INFO L168 Benchmark]: TraceAbstraction took 112111.10 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 242.2 MB). Free memory was 913.3 MB in the beginning and 900.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 254.8 MB. Max. memory is 11.5 GB. [2018-11-23 07:12:03,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 553.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 74.04 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3270.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.3 MB in the end (delta: 180.9 MB). Peak memory consumption was 180.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 112111.10 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 242.2 MB). Free memory was 913.3 MB in the beginning and 900.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 254.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...