./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 0.1.23-635dfa2 [2018-12-01 22:36:10,626 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:36:10,627 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:36:10,633 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:36:10,633 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:36:10,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:36:10,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:36:10,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:36:10,636 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:36:10,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:36:10,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:36:10,637 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:36:10,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:36:10,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:36:10,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:36:10,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:36:10,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:36:10,640 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:36:10,641 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:36:10,642 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:36:10,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:36:10,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:36:10,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:36:10,644 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:36:10,644 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:36:10,645 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:36:10,645 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:36:10,646 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:36:10,646 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:36:10,647 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:36:10,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:36:10,647 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:36:10,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:36:10,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:36:10,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:36:10,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:36:10,648 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-01 22:36:10,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:36:10,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:36:10,656 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:36:10,656 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:36:10,656 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:36:10,656 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:36:10,656 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:36:10,656 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:36:10,657 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:36:10,657 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:36:10,658 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:36:10,658 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:36:10,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 22:36:10,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 22:36:10,659 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_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:36:10,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:36:10,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:36:10,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:36:10,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:36:10,686 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:36:10,687 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-01 22:36:10,722 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/79e8bd584/19dccbad2d7b4619a651633994399d8e/FLAGd749b9bb1 [2018-12-01 22:36:11,152 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:36:11,152 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-01 22:36:11,161 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/79e8bd584/19dccbad2d7b4619a651633994399d8e/FLAGd749b9bb1 [2018-12-01 22:36:11,169 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/79e8bd584/19dccbad2d7b4619a651633994399d8e [2018-12-01 22:36:11,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:36:11,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:36:11,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:36:11,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:36:11,174 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:36:11,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7209347d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11, skipping insertion in model container [2018-12-01 22:36:11,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:36:11,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:36:11,451 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:36:11,461 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:36:11,511 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:36:11,538 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:36:11,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11 WrapperNode [2018-12-01 22:36:11,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:36:11,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:36:11,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:36:11,539 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:36:11,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:36:11,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:36:11,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:36:11,566 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:36:11,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... [2018-12-01 22:36:11,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:36:11,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:36:11,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:36:11,611 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:36:11,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:36:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-12-01 22:36:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-12-01 22:36:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:36:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 22:36:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 22:36:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 22:36:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-01 22:36:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-01 22:36:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-01 22:36:11,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-01 22:36:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 22:36:11,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:36:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:36:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:36:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:36:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 22:36:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-12-01 22:36:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-12-01 22:36:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 22:36:11,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-01 22:36:11,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-01 22:36:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:36:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-01 22:36:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-12-01 22:36:11,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-12-01 22:36:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-01 22:36:11,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:36:11,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:36:14,699 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:36:14,699 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 22:36:14,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:36:14 BoogieIcfgContainer [2018-12-01 22:36:14,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:36:14,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:36:14,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:36:14,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:36:14,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:36:11" (1/3) ... [2018-12-01 22:36:14,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3189c305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:36:14, skipping insertion in model container [2018-12-01 22:36:14,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:36:11" (2/3) ... [2018-12-01 22:36:14,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3189c305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:36:14, skipping insertion in model container [2018-12-01 22:36:14,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:36:14" (3/3) ... [2018-12-01 22:36:14,705 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-12-01 22:36:14,714 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:36:14,720 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:36:14,734 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:36:14,751 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:36:14,751 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:36:14,752 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:36:14,752 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:36:14,752 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:36:14,752 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:36:14,752 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:36:14,752 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:36:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-12-01 22:36:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:36:14,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:14,771 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:36:14,773 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:14,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-12-01 22:36:14,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:14,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:14,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:14,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:14,813 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:36:16,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:16,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:36:16,526 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:16,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 22:36:16,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 22:36:16,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:36:16,539 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-12-01 22:36:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:16,586 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-12-01 22:36:16,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 22:36:16,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-01 22:36:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:16,593 INFO L225 Difference]: With dead ends: 212 [2018-12-01 22:36:16,594 INFO L226 Difference]: Without dead ends: 104 [2018-12-01 22:36:16,596 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 [2018-12-01 22:36:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-12-01 22:36:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-12-01 22:36:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-01 22:36:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-12-01 22:36:16,626 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-12-01 22:36:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:16,627 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-12-01 22:36:16,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 22:36:16,627 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-12-01 22:36:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 22:36:16,628 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:16,628 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] [2018-12-01 22:36:16,628 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:16,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-12-01 22:36:16,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:16,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:16,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:16,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:16,630 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:36:16,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:16,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:36:16,672 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:16,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 22:36:16,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 22:36:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:36:16,674 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-12-01 22:36:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:16,694 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-12-01 22:36:16,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 22:36:16,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-01 22:36:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:16,696 INFO L225 Difference]: With dead ends: 197 [2018-12-01 22:36:16,696 INFO L226 Difference]: Without dead ends: 103 [2018-12-01 22:36:16,697 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 [2018-12-01 22:36:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-01 22:36:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-12-01 22:36:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-01 22:36:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-12-01 22:36:16,704 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-12-01 22:36:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:16,704 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-12-01 22:36:16,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 22:36:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-12-01 22:36:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:36:16,705 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:16,705 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] [2018-12-01 22:36:16,705 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:16,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-12-01 22:36:16,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:16,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:16,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:16,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:16,706 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 22:36:18,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:18,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 22:36:18,264 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:18,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 22:36:18,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 22:36:18,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-01 22:36:18,265 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 5 states. [2018-12-01 22:36:18,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:18,298 INFO L93 Difference]: Finished difference Result 189 states and 279 transitions. [2018-12-01 22:36:18,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:36:18,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-12-01 22:36:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:18,300 INFO L225 Difference]: With dead ends: 189 [2018-12-01 22:36:18,300 INFO L226 Difference]: Without dead ends: 181 [2018-12-01 22:36:18,301 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 [2018-12-01 22:36:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-12-01 22:36:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2018-12-01 22:36:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-12-01 22:36:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 268 transitions. [2018-12-01 22:36:18,313 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 268 transitions. Word has length 23 [2018-12-01 22:36:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:18,313 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 268 transitions. [2018-12-01 22:36:18,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 22:36:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 268 transitions. [2018-12-01 22:36:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-01 22:36:18,315 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:18,315 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] [2018-12-01 22:36:18,315 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:18,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1967376110, now seen corresponding path program 1 times [2018-12-01 22:36:18,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:18,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:18,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:18,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:18,317 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-01 22:36:20,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:20,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:36:20,118 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:36:20,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:36:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:36:20,119 INFO L87 Difference]: Start difference. First operand 180 states and 268 transitions. Second operand 4 states. [2018-12-01 22:36:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:22,200 INFO L93 Difference]: Finished difference Result 365 states and 553 transitions. [2018-12-01 22:36:22,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:36:22,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-12-01 22:36:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:22,202 INFO L225 Difference]: With dead ends: 365 [2018-12-01 22:36:22,202 INFO L226 Difference]: Without dead ends: 352 [2018-12-01 22:36:22,203 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 [2018-12-01 22:36:22,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2018-12-01 22:36:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 341. [2018-12-01 22:36:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-12-01 22:36:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 521 transitions. [2018-12-01 22:36:22,223 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 521 transitions. Word has length 79 [2018-12-01 22:36:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:22,223 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 521 transitions. [2018-12-01 22:36:22,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:36:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 521 transitions. [2018-12-01 22:36:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-01 22:36:22,225 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:22,225 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] [2018-12-01 22:36:22,225 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:22,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:22,225 INFO L82 PathProgramCache]: Analyzing trace with hash -677381746, now seen corresponding path program 1 times [2018-12-01 22:36:22,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:22,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:22,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:22,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:22,227 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-01 22:36:23,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:23,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-01 22:36:23,934 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:23,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 22:36:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 22:36:23,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-01 22:36:23,935 INFO L87 Difference]: Start difference. First operand 341 states and 521 transitions. Second operand 4 states. [2018-12-01 22:36:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:26,016 INFO L93 Difference]: Finished difference Result 590 states and 885 transitions. [2018-12-01 22:36:26,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:36:26,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2018-12-01 22:36:26,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:26,018 INFO L225 Difference]: With dead ends: 590 [2018-12-01 22:36:26,018 INFO L226 Difference]: Without dead ends: 265 [2018-12-01 22:36:26,020 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 [2018-12-01 22:36:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-12-01 22:36:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 257. [2018-12-01 22:36:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-12-01 22:36:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 371 transitions. [2018-12-01 22:36:26,034 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 371 transitions. Word has length 79 [2018-12-01 22:36:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:26,034 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 371 transitions. [2018-12-01 22:36:26,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 22:36:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 371 transitions. [2018-12-01 22:36:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-01 22:36:26,036 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:26,036 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] [2018-12-01 22:36:26,036 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:26,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:26,037 INFO L82 PathProgramCache]: Analyzing trace with hash 616356910, now seen corresponding path program 1 times [2018-12-01 22:36:26,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:26,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:26,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:26,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:26,038 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-01 22:36:27,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:36:27,610 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:36:27,611 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-12-01 22:36:27,613 INFO L205 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] [2018-12-01 22:36:27,645 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 22:36:27,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 22:36:33,342 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-01 22:36:33,343 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. [2018-12-01 22:36:33,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:33,349 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-01 22:36:41,734 INFO L227 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 62.49% of their original sizes. [2018-12-01 22:36:41,734 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-01 22:36:41,875 INFO L418 sIntCurrentIteration]: We unified 78 AI predicates to 78 [2018-12-01 22:36:41,875 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-01 22:36:41,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 22:36:41,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-12-01 22:36:41,876 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:41,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 22:36:41,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 22:36:41,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-12-01 22:36:41,876 INFO L87 Difference]: Start difference. First operand 257 states and 371 transitions. Second operand 14 states. [2018-12-01 22:36:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:48,811 INFO L93 Difference]: Finished difference Result 502 states and 729 transitions. [2018-12-01 22:36:48,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-01 22:36:48,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-12-01 22:36:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:48,813 INFO L225 Difference]: With dead ends: 502 [2018-12-01 22:36:48,813 INFO L226 Difference]: Without dead ends: 267 [2018-12-01 22:36:48,814 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-12-01 22:36:48,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-12-01 22:36:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 266. [2018-12-01 22:36:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-12-01 22:36:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 382 transitions. [2018-12-01 22:36:48,830 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 382 transitions. Word has length 79 [2018-12-01 22:36:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:48,830 INFO L480 AbstractCegarLoop]: Abstraction has 266 states and 382 transitions. [2018-12-01 22:36:48,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 22:36:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 382 transitions. [2018-12-01 22:36:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-01 22:36:48,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:48,832 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] [2018-12-01 22:36:48,832 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:48,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:48,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1749547503, now seen corresponding path program 1 times [2018-12-01 22:36:48,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:48,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:48,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:48,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:48,833 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-12-01 22:36:50,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:36:50,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-01 22:36:50,391 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 22:36:50,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 22:36:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 22:36:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-01 22:36:50,392 INFO L87 Difference]: Start difference. First operand 266 states and 382 transitions. Second operand 8 states. [2018-12-01 22:36:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:36:57,484 INFO L93 Difference]: Finished difference Result 613 states and 926 transitions. [2018-12-01 22:36:57,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 22:36:57,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-12-01 22:36:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:36:57,486 INFO L225 Difference]: With dead ends: 613 [2018-12-01 22:36:57,486 INFO L226 Difference]: Without dead ends: 378 [2018-12-01 22:36:57,488 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 [2018-12-01 22:36:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2018-12-01 22:36:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 275. [2018-12-01 22:36:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-12-01 22:36:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 409 transitions. [2018-12-01 22:36:57,507 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 409 transitions. Word has length 79 [2018-12-01 22:36:57,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:36:57,507 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 409 transitions. [2018-12-01 22:36:57,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 22:36:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 409 transitions. [2018-12-01 22:36:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-12-01 22:36:57,509 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:36:57,509 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] [2018-12-01 22:36:57,509 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:36:57,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:36:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash -912615794, now seen corresponding path program 1 times [2018-12-01 22:36:57,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:36:57,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:57,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:36:57,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:36:57,510 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:36:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:36:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-01 22:36:59,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:36:59,011 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:36:59,011 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 80 with the following transitions: [2018-12-01 22:36:59,011 INFO L205 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] [2018-12-01 22:36:59,015 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 22:36:59,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 22:37:01,999 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-01 22:37:01,999 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. [2018-12-01 22:37:02,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:37:02,004 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-01 22:37:02,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:02,004 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:37:02,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:37:02,012 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-01 22:37:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:02,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:37:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-01 22:37:02,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:37:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-01 22:37:02,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:37:02,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2018-12-01 22:37:02,222 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:37:02,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 22:37:02,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 22:37:02,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 22:37:02,223 INFO L87 Difference]: Start difference. First operand 275 states and 409 transitions. Second operand 5 states. [2018-12-01 22:37:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:37:02,245 INFO L93 Difference]: Finished difference Result 546 states and 815 transitions. [2018-12-01 22:37:02,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 22:37:02,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2018-12-01 22:37:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:37:02,246 INFO L225 Difference]: With dead ends: 546 [2018-12-01 22:37:02,247 INFO L226 Difference]: Without dead ends: 278 [2018-12-01 22:37:02,247 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 [2018-12-01 22:37:02,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-12-01 22:37:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2018-12-01 22:37:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-12-01 22:37:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 411 transitions. [2018-12-01 22:37:02,258 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 411 transitions. Word has length 79 [2018-12-01 22:37:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:37:02,258 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 411 transitions. [2018-12-01 22:37:02,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 22:37:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 411 transitions. [2018-12-01 22:37:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-01 22:37:02,259 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:37:02,259 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] [2018-12-01 22:37:02,259 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:37:02,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:37:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1519742352, now seen corresponding path program 2 times [2018-12-01 22:37:02,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:37:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:02,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:37:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:02,260 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:37:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-12-01 22:37:03,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:03,768 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:37:03,768 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-01 22:37:03,768 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-01 22:37:03,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:03,768 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:37:03,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 22:37:03,775 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-01 22:37:15,874 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-01 22:37:15,874 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 22:37:15,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:37:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-01 22:37:15,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:37:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-12-01 22:37:15,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:37:15,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2018-12-01 22:37:15,974 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:37:15,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:37:15,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:37:15,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:37:15,974 INFO L87 Difference]: Start difference. First operand 277 states and 411 transitions. Second operand 7 states. [2018-12-01 22:37:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:37:16,047 INFO L93 Difference]: Finished difference Result 566 states and 840 transitions. [2018-12-01 22:37:16,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-01 22:37:16,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2018-12-01 22:37:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:37:16,048 INFO L225 Difference]: With dead ends: 566 [2018-12-01 22:37:16,048 INFO L226 Difference]: Without dead ends: 296 [2018-12-01 22:37:16,049 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 [2018-12-01 22:37:16,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-12-01 22:37:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 288. [2018-12-01 22:37:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-12-01 22:37:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2018-12-01 22:37:16,059 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 81 [2018-12-01 22:37:16,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:37:16,060 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2018-12-01 22:37:16,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:37:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2018-12-01 22:37:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-01 22:37:16,061 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:37:16,061 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] [2018-12-01 22:37:16,061 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:37:16,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:37:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1820662229, now seen corresponding path program 3 times [2018-12-01 22:37:16,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:37:16,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:16,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:37:16,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:16,062 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:37:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-01 22:37:17,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:17,589 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:37:17,589 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-01 22:37:17,589 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-01 22:37:17,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:17,589 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:37:17,599 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 22:37:17,599 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-12-01 22:37:17,709 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 22:37:17,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 22:37:17,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:37:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-01 22:37:17,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:37:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-12-01 22:37:17,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:37:17,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-12-01 22:37:17,820 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:37:17,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 22:37:17,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 22:37:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-01 22:37:17,820 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand 6 states. [2018-12-01 22:37:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:37:17,859 INFO L93 Difference]: Finished difference Result 568 states and 838 transitions. [2018-12-01 22:37:17,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:37:17,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-12-01 22:37:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:37:17,861 INFO L225 Difference]: With dead ends: 568 [2018-12-01 22:37:17,861 INFO L226 Difference]: Without dead ends: 305 [2018-12-01 22:37:17,862 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 [2018-12-01 22:37:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-12-01 22:37:17,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 297. [2018-12-01 22:37:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-12-01 22:37:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 433 transitions. [2018-12-01 22:37:17,879 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 433 transitions. Word has length 92 [2018-12-01 22:37:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:37:17,880 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 433 transitions. [2018-12-01 22:37:17,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 22:37:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 433 transitions. [2018-12-01 22:37:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-12-01 22:37:17,881 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:37:17,881 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] [2018-12-01 22:37:17,881 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:37:17,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:37:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1007390222, now seen corresponding path program 4 times [2018-12-01 22:37:17,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:37:17,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:17,883 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 22:37:17,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:17,883 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:37:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-01 22:37:19,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:19,427 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:37:19,427 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-01 22:37:19,427 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-01 22:37:19,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:19,427 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:37:19,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:37:19,436 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-01 22:37:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:19,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:37:19,549 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-01 22:37:19,549 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:37:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-01 22:37:19,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-01 22:37:19,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-12-01 22:37:19,633 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-01 22:37:19,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:37:19,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:37:19,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-01 22:37:19,634 INFO L87 Difference]: Start difference. First operand 297 states and 433 transitions. Second operand 7 states. [2018-12-01 22:37:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:37:19,679 INFO L93 Difference]: Finished difference Result 577 states and 848 transitions. [2018-12-01 22:37:19,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 22:37:19,680 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-12-01 22:37:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:37:19,681 INFO L225 Difference]: With dead ends: 577 [2018-12-01 22:37:19,681 INFO L226 Difference]: Without dead ends: 314 [2018-12-01 22:37:19,682 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 [2018-12-01 22:37:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-12-01 22:37:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2018-12-01 22:37:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-12-01 22:37:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 443 transitions. [2018-12-01 22:37:19,701 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 443 transitions. Word has length 101 [2018-12-01 22:37:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:37:19,701 INFO L480 AbstractCegarLoop]: Abstraction has 306 states and 443 transitions. [2018-12-01 22:37:19,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:37:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 443 transitions. [2018-12-01 22:37:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-01 22:37:19,703 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:37:19,703 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] [2018-12-01 22:37:19,703 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:37:19,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:37:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash -786549237, now seen corresponding path program 5 times [2018-12-01 22:37:19,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 22:37:19,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:19,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:37:19,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 22:37:19,704 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 22:37:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:37:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-12-01 22:37:21,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:21,434 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 22:37:21,434 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-01 22:37:21,434 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-01 22:37:21,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:37:21,434 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:37:21,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 22:37:21,441 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-01 22:37:57,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 22:37:57,764 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 22:37:57,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:37:57,802 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 [2018-12-01 22:37:57,830 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:57,847 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 [2018-12-01 22:37:57,960 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2018-12-01 22:37:57,963 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:57,964 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:57,964 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 [2018-12-01 22:37:58,019 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,021 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,022 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,024 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,025 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,026 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 [2018-12-01 22:37:58,088 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,092 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,093 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,095 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,096 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,097 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 [2018-12-01 22:37:58,163 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,164 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,165 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,167 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,168 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,169 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,170 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,171 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,172 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 [2018-12-01 22:37:58,238 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,239 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,240 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,241 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,241 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,242 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,244 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,245 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,246 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 [2018-12-01 22:37:58,250 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 [2018-12-01 22:37:58,250 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,285 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,317 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,349 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,382 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,417 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,479 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,484 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,488 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,504 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 [2018-12-01 22:37:58,697 WARN L180 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-12-01 22:37:58,701 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,702 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,703 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,705 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,706 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,707 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 [2018-12-01 22:37:58,768 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,770 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,771 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,771 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,772 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,773 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,775 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,775 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 [2018-12-01 22:37:58,848 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,850 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,851 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,852 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,853 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,854 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,856 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,857 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,858 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 [2018-12-01 22:37:58,924 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,925 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,926 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,927 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,930 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,932 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,933 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,934 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:58,935 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 [2018-12-01 22:37:58,938 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 [2018-12-01 22:37:58,939 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,970 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:58,999 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,029 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,062 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,124 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,126 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,130 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,132 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,137 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,143 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,159 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 [2018-12-01 22:37:59,358 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-12-01 22:37:59,361 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,363 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,365 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,369 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,373 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,375 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,379 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,382 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,393 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 [2018-12-01 22:37:59,610 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2018-12-01 22:37:59,613 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,614 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,615 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,617 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,618 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,619 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,620 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,621 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,622 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,623 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 [2018-12-01 22:37:59,692 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,693 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,694 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,694 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,695 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,696 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,697 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,698 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,699 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,699 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,700 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,701 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 [2018-12-01 22:37:59,704 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 [2018-12-01 22:37:59,705 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,735 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,768 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:37:59,836 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,837 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,839 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,840 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,841 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,841 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,842 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,844 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,845 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,846 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,849 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,852 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,855 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:37:59,867 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 [2018-12-01 22:38:00,084 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2018-12-01 22:38:00,088 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,089 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,091 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,091 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,092 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,093 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,094 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,095 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,095 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,096 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,097 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 [2018-12-01 22:38:00,101 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 [2018-12-01 22:38:00,102 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:00,147 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:00,230 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,231 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,232 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,233 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,234 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,235 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,236 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,236 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,237 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,239 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,240 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,240 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,241 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,242 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,243 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,245 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,253 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 [2018-12-01 22:38:00,259 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 157 treesize of output 149 [2018-12-01 22:38:00,259 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:00,397 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,397 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,398 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,399 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,399 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,400 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,401 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,401 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,403 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,403 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,404 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,405 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,406 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:00,412 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 [2018-12-01 22:38:00,412 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 2 xjuncts. [2018-12-01 22:38:00,577 INFO L267 ElimStorePlain]: Start of recursive call 24: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-01 22:38:00,742 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:38:00,962 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-12-01 22:38:01,201 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,202 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,203 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,204 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,206 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,208 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,209 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,210 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 [2018-12-01 22:38:01,278 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,280 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,281 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,283 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,284 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,285 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,286 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,288 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,289 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,290 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 [2018-12-01 22:38:01,362 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,363 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,364 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,365 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,366 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,367 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,368 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,368 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,369 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,370 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:01,371 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 [2018-12-01 22:38:01,375 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 [2018-12-01 22:38:01,376 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:01,415 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:01,451 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:01,494 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:01,782 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-12-01 22:38:02,070 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-12-01 22:38:02,383 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-12-01 22:38:02,699 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2018-12-01 22:38:03,036 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. [2018-12-01 22:38:03,037 INFO L202 ElimStorePlain]: Needed 30 recursive calls to eliminate 3 variables, input treesize:142, output treesize:1005 [2018-12-01 22:38:03,990 WARN L180 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 258 [2018-12-01 22:38:06,624 WARN L180 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 419 [2018-12-01 22:38:06,635 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,638 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,640 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,643 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,646 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,649 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,652 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,655 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,657 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,660 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,662 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,663 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,666 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,669 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,672 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,673 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 169 treesize of output 249 [2018-12-01 22:38:06,678 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 75 treesize of output 216 [2018-12-01 22:38:06,917 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-01 22:38:06,922 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,925 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,927 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,930 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,932 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,933 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,934 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,935 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,943 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:06,944 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:06,955 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:06,956 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:07,040 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:07,118 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:07,231 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:08,573 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,576 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,579 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,581 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,583 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,585 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,587 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,590 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,593 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,596 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,599 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,601 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,604 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,607 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,610 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,611 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 169 treesize of output 229 [2018-12-01 22:38:08,616 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 75 treesize of output 216 [2018-12-01 22:38:08,890 WARN L180 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-01 22:38:08,895 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,901 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,902 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,902 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,903 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,904 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,905 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,906 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,917 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:08,918 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:08,929 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:08,929 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:09,011 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:09,095 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:09,198 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:10,507 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,510 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,513 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,516 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,518 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,520 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,523 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,526 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,532 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,538 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,541 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,543 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,547 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,548 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 169 treesize of output 253 [2018-12-01 22:38:10,554 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 75 treesize of output 216 [2018-12-01 22:38:10,801 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-01 22:38:10,806 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,808 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,813 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,816 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,818 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,819 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,820 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,821 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,826 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:10,827 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:10,838 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:10,839 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:10,922 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:11,001 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:11,115 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:12,369 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,372 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,375 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,378 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,380 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,383 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,386 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,388 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,391 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,395 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,397 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,399 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,402 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,404 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,406 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,407 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 169 treesize of output 253 [2018-12-01 22:38:12,413 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 75 treesize of output 216 [2018-12-01 22:38:12,652 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-01 22:38:12,657 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,659 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,663 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,666 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,668 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,670 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,672 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,673 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,674 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,680 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:12,681 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:12,692 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:12,693 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:12,774 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:12,854 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:12,971 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:14,134 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,135 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,136 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,137 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,137 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,139 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,140 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,140 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,141 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,141 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,142 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,142 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,143 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,143 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 244 [2018-12-01 22:38:14,148 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 77 treesize of output 213 [2018-12-01 22:38:14,296 WARN L180 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2018-12-01 22:38:14,299 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,301 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,302 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,303 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,304 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,305 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,305 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,306 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,306 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,310 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:14,310 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:14,323 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 240 [2018-12-01 22:38:14,323 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:14,402 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:14,480 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:14,588 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:15,767 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,769 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,772 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,775 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,777 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,780 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,783 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,786 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,789 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,791 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,792 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,795 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,797 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,800 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,803 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,811 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,814 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,817 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,820 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,822 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,825 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,837 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:15,856 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 171 treesize of output 289 [2018-12-01 22:38:15,862 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 283 treesize of output 275 [2018-12-01 22:38:16,142 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2018-12-01 22:38:16,146 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,149 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,151 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,154 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,156 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,157 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,158 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,159 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,168 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:16,182 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:16,183 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:16,263 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:16,368 INFO L267 ElimStorePlain]: Start of recursive call 23: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:16,655 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,657 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,659 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,660 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,663 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,664 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,666 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,668 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,670 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,672 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,675 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,677 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,683 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,685 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,688 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,689 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,695 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:16,709 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 281 [2018-12-01 22:38:17,454 WARN L180 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 150 [2018-12-01 22:38:17,459 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,461 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,463 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,465 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,467 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,469 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,471 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,472 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,473 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,474 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,476 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,477 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,480 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,482 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,485 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,487 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,489 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,492 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,495 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:17,502 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 324 [2018-12-01 22:38:17,527 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 57 disjoint index pairs (out of 66 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 320 treesize of output 316 [2018-12-01 22:38:17,528 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-12-01 22:38:18,077 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,079 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,080 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,082 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,082 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,084 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,085 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,087 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,090 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:18,091 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 0 case distinctions, treesize of input 248 treesize of output 348 [2018-12-01 22:38:18,092 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:18,559 INFO L267 ElimStorePlain]: Start of recursive call 27: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-01 22:38:19,102 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,104 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,105 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,106 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,107 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,107 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,108 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,108 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,109 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,113 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:19,114 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 294 [2018-12-01 22:38:19,126 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:19,127 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:19,249 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:19,761 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:38:20,394 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-12-01 22:38:21,962 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,963 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,964 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,965 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,965 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,966 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,967 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,967 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,968 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,968 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,969 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,970 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,970 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,971 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,971 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:21,972 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 169 treesize of output 251 [2018-12-01 22:38:21,977 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 77 treesize of output 216 [2018-12-01 22:38:22,131 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2018-12-01 22:38:22,134 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,140 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,141 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,141 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,142 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,143 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,143 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,144 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,148 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:38:22,149 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 252 [2018-12-01 22:38:22,163 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 47 disjoint index pairs (out of 55 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 247 [2018-12-01 22:38:22,164 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-01 22:38:22,245 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:22,330 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:22,439 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:38:23,958 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. [2018-12-01 22:38:23,958 INFO L202 ElimStorePlain]: Needed 35 recursive calls to eliminate 34 variables, input treesize:1176, output treesize:2728 [2018-12-01 22:38:27,595 WARN L180 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 867 DAG size of output: 659 [2018-12-01 22:38:46,573 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-01 22:38:46,774 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 22:38:46,775 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.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.push(DiffWrapperScript.java:93) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.push(WrapperScript.java:101) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.UndoableWrapperScript.push(UndoableWrapperScript.java:52) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$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) ... 46 more [2018-12-01 22:38:46,782 INFO L168 Benchmark]: Toolchain (without parser) took 155610.68 ms. Allocated memory was 1.0 GB in the beginning and 8.6 GB in the end (delta: 7.6 GB). Free memory was 953.5 MB in the beginning and 3.1 GB in the end (delta: -2.1 GB). Peak memory consumption was 5.4 GB. Max. memory is 11.5 GB. [2018-12-01 22:38:46,783 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-12-01 22:38:46,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-01 22:38:46,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.65 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-12-01 22:38:46,785 INFO L168 Benchmark]: Boogie Preprocessor took 44.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:38:46,785 INFO L168 Benchmark]: RCFGBuilder took 3088.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -128.6 MB). Peak memory consumption was 393.0 MB. Max. memory is 11.5 GB. [2018-12-01 22:38:46,785 INFO L168 Benchmark]: TraceAbstraction took 152080.73 ms. Allocated memory was 1.3 GB in the beginning and 8.6 GB in the end (delta: 7.2 GB). Free memory was 1.2 GB in the beginning and 3.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 5.4 GB. Max. memory is 11.5 GB. [2018-12-01 22:38:46,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -148.9 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.65 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3088.78 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 180.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -128.6 MB). Peak memory consumption was 393.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 152080.73 ms. Allocated memory was 1.3 GB in the beginning and 8.6 GB in the end (delta: 7.2 GB). Free memory was 1.2 GB in the beginning and 3.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 5.4 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 0.1.23-635dfa2 [2018-12-01 22:38:48,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 22:38:48,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 22:38:48,045 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 22:38:48,045 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 22:38:48,046 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 22:38:48,046 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 22:38:48,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 22:38:48,048 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 22:38:48,048 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 22:38:48,049 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 22:38:48,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 22:38:48,049 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 22:38:48,050 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 22:38:48,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 22:38:48,051 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 22:38:48,051 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 22:38:48,052 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 22:38:48,053 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 22:38:48,054 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 22:38:48,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 22:38:48,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 22:38:48,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 22:38:48,056 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 22:38:48,056 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 22:38:48,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 22:38:48,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 22:38:48,057 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 22:38:48,058 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 22:38:48,058 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 22:38:48,058 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 22:38:48,059 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 22:38:48,059 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 22:38:48,059 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 22:38:48,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 22:38:48,060 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 22:38:48,060 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-01 22:38:48,068 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 22:38:48,068 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 22:38:48,068 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 22:38:48,068 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 22:38:48,069 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 22:38:48,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 22:38:48,069 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 22:38:48,070 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 22:38:48,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:38:48,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 22:38:48,071 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-01 22:38:48,072 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 22:38:48,072 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 22:38:48,072 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 22:38:48,072 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_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:38:48,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 22:38:48,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 22:38:48,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 22:38:48,103 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 22:38:48,104 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 22:38:48,104 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/../../sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-01 22:38:48,145 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/a3cc52d7b/fd405a161b8d41b6ac9741fa04823621/FLAG68865808e [2018-12-01 22:38:48,572 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 22:38:48,572 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/sv-benchmarks/c/seq-pthread/cs_fib_longer_true-unreach-call.i [2018-12-01 22:38:48,583 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/a3cc52d7b/fd405a161b8d41b6ac9741fa04823621/FLAG68865808e [2018-12-01 22:38:48,594 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/data/a3cc52d7b/fd405a161b8d41b6ac9741fa04823621 [2018-12-01 22:38:48,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 22:38:48,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 22:38:48,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 22:38:48,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 22:38:48,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 22:38:48,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:38:48" (1/1) ... [2018-12-01 22:38:48,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d6b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:48, skipping insertion in model container [2018-12-01 22:38:48,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 10:38:48" (1/1) ... [2018-12-01 22:38:48,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 22:38:48,629 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 22:38:48,853 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:38:48,865 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 22:38:48,984 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 22:38:49,025 INFO L195 MainTranslator]: Completed translation [2018-12-01 22:38:49,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49 WrapperNode [2018-12-01 22:38:49,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 22:38:49,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 22:38:49,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 22:38:49,026 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 22:38:49,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 22:38:49,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 22:38:49,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 22:38:49,052 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 22:38:49,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... [2018-12-01 22:38:49,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 22:38:49,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 22:38:49,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 22:38:49,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 22:38:49,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 22:38:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2018-12-01 22:38:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-01 22:38:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-01 22:38:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-01 22:38:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-01 22:38:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 22:38:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 22:38:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2018-12-01 22:38:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-01 22:38:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2018-12-01 22:38:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2018-12-01 22:38:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2018-12-01 22:38:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 22:38:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 22:38:52,627 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 22:38:52,627 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-01 22:38:52,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:38:52 BoogieIcfgContainer [2018-12-01 22:38:52,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 22:38:52,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 22:38:52,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 22:38:52,630 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 22:38:52,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 10:38:48" (1/3) ... [2018-12-01 22:38:52,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9ef0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:38:52, skipping insertion in model container [2018-12-01 22:38:52,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 10:38:49" (2/3) ... [2018-12-01 22:38:52,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9ef0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 10:38:52, skipping insertion in model container [2018-12-01 22:38:52,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 10:38:52" (3/3) ... [2018-12-01 22:38:52,632 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_fib_longer_true-unreach-call.i [2018-12-01 22:38:52,637 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 22:38:52,642 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 22:38:52,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 22:38:52,667 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 22:38:52,668 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 22:38:52,668 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 22:38:52,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 22:38:52,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 22:38:52,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 22:38:52,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 22:38:52,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 22:38:52,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 22:38:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2018-12-01 22:38:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 22:38:52,682 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:52,683 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 22:38:52,684 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:52,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:52,687 INFO L82 PathProgramCache]: Analyzing trace with hash 649759861, now seen corresponding path program 1 times [2018-12-01 22:38:52,691 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:52,691 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:52,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:53,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:38:53,055 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:53,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:38:53,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:38:53,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 22:38:53,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 22:38:53,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:38:53,075 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2018-12-01 22:38:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:38:53,280 INFO L93 Difference]: Finished difference Result 212 states and 322 transitions. [2018-12-01 22:38:53,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 22:38:53,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-01 22:38:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:38:53,294 INFO L225 Difference]: With dead ends: 212 [2018-12-01 22:38:53,294 INFO L226 Difference]: Without dead ends: 104 [2018-12-01 22:38:53,298 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 [2018-12-01 22:38:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-12-01 22:38:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-12-01 22:38:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-01 22:38:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 146 transitions. [2018-12-01 22:38:53,329 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 146 transitions. Word has length 18 [2018-12-01 22:38:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:38:53,329 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 146 transitions. [2018-12-01 22:38:53,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 22:38:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 146 transitions. [2018-12-01 22:38:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 22:38:53,330 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:53,331 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] [2018-12-01 22:38:53,331 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:53,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:53,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1255387306, now seen corresponding path program 1 times [2018-12-01 22:38:53,332 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:53,332 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:53,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:53,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:38:53,624 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:53,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:38:53,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 22:38:53,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 22:38:53,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 22:38:53,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 22:38:53,629 INFO L87 Difference]: Start difference. First operand 101 states and 146 transitions. Second operand 3 states. [2018-12-01 22:38:53,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:38:53,699 INFO L93 Difference]: Finished difference Result 197 states and 288 transitions. [2018-12-01 22:38:53,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 22:38:53,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-12-01 22:38:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:38:53,704 INFO L225 Difference]: With dead ends: 197 [2018-12-01 22:38:53,704 INFO L226 Difference]: Without dead ends: 103 [2018-12-01 22:38:53,705 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 [2018-12-01 22:38:53,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-01 22:38:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-12-01 22:38:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-01 22:38:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2018-12-01 22:38:53,712 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 21 [2018-12-01 22:38:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:38:53,712 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2018-12-01 22:38:53,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 22:38:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2018-12-01 22:38:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 22:38:53,713 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:53,713 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] [2018-12-01 22:38:53,713 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:53,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash -744986184, now seen corresponding path program 1 times [2018-12-01 22:38:53,714 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:53,714 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:53,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:53,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:38:53,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:38:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 22:38:54,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:38:54,020 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:38:54,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:54,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 22:38:54,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:54,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-01 22:38:54,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2018-12-01 22:38:54,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 22:38:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 22:38:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-01 22:38:54,223 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand 7 states. [2018-12-01 22:38:54,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:38:54,531 INFO L93 Difference]: Finished difference Result 201 states and 293 transitions. [2018-12-01 22:38:54,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 22:38:54,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-12-01 22:38:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:38:54,533 INFO L225 Difference]: With dead ends: 201 [2018-12-01 22:38:54,533 INFO L226 Difference]: Without dead ends: 106 [2018-12-01 22:38:54,533 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 [2018-12-01 22:38:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-12-01 22:38:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-12-01 22:38:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-12-01 22:38:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2018-12-01 22:38:54,540 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 23 [2018-12-01 22:38:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:38:54,540 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2018-12-01 22:38:54,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 22:38:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2018-12-01 22:38:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-01 22:38:54,541 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:54,541 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] [2018-12-01 22:38:54,541 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:54,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:54,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2081995969, now seen corresponding path program 1 times [2018-12-01 22:38:54,542 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:54,542 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:54,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:54,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 22:38:54,775 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:54,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:38:54,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-01 22:38:54,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 22:38:54,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 22:38:54,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-01 22:38:54,778 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 8 states. [2018-12-01 22:38:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:38:56,865 INFO L93 Difference]: Finished difference Result 454 states and 743 transitions. [2018-12-01 22:38:56,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 22:38:56,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2018-12-01 22:38:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:38:56,870 INFO L225 Difference]: With dead ends: 454 [2018-12-01 22:38:56,871 INFO L226 Difference]: Without dead ends: 367 [2018-12-01 22:38:56,871 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 [2018-12-01 22:38:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-12-01 22:38:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 267. [2018-12-01 22:38:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-12-01 22:38:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 430 transitions. [2018-12-01 22:38:56,911 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 430 transitions. Word has length 47 [2018-12-01 22:38:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:38:56,912 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 430 transitions. [2018-12-01 22:38:56,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 22:38:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 430 transitions. [2018-12-01 22:38:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-01 22:38:56,914 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:56,914 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] [2018-12-01 22:38:56,914 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:56,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1863141251, now seen corresponding path program 1 times [2018-12-01 22:38:56,915 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:56,915 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:56,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:57,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 22:38:57,107 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:57,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:38:57,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-01 22:38:57,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 22:38:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 22:38:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-01 22:38:57,110 INFO L87 Difference]: Start difference. First operand 267 states and 430 transitions. Second operand 5 states. [2018-12-01 22:38:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:38:57,427 INFO L93 Difference]: Finished difference Result 533 states and 852 transitions. [2018-12-01 22:38:57,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 22:38:57,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2018-12-01 22:38:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:38:57,429 INFO L225 Difference]: With dead ends: 533 [2018-12-01 22:38:57,429 INFO L226 Difference]: Without dead ends: 285 [2018-12-01 22:38:57,430 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 [2018-12-01 22:38:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-12-01 22:38:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2018-12-01 22:38:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-12-01 22:38:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 383 transitions. [2018-12-01 22:38:57,443 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 383 transitions. Word has length 47 [2018-12-01 22:38:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:38:57,443 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 383 transitions. [2018-12-01 22:38:57,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 22:38:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 383 transitions. [2018-12-01 22:38:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-01 22:38:57,444 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:38:57,444 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] [2018-12-01 22:38:57,444 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:38:57,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:38:57,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1470114241, now seen corresponding path program 1 times [2018-12-01 22:38:57,445 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:38:57,445 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:38:57,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:57,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 22:38:57,753 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:38:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-01 22:38:57,789 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:38:57,789 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:38:57,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:38:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:38:57,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:38:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-01 22:38:57,993 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:38:58,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-01 22:38:58,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4] total 14 [2018-12-01 22:38:58,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 22:38:58,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 22:38:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-01 22:38:58,011 INFO L87 Difference]: Start difference. First operand 271 states and 383 transitions. Second operand 14 states. [2018-12-01 22:39:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:39:02,250 INFO L93 Difference]: Finished difference Result 583 states and 815 transitions. [2018-12-01 22:39:02,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-01 22:39:02,250 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2018-12-01 22:39:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:39:02,252 INFO L225 Difference]: With dead ends: 583 [2018-12-01 22:39:02,252 INFO L226 Difference]: Without dead ends: 316 [2018-12-01 22:39:02,253 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 [2018-12-01 22:39:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2018-12-01 22:39:02,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2018-12-01 22:39:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-12-01 22:39:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 410 transitions. [2018-12-01 22:39:02,266 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 410 transitions. Word has length 47 [2018-12-01 22:39:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:39:02,266 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 410 transitions. [2018-12-01 22:39:02,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 22:39:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 410 transitions. [2018-12-01 22:39:02,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-01 22:39:02,267 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:39:02,267 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] [2018-12-01 22:39:02,268 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:39:02,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:39:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1120246192, now seen corresponding path program 1 times [2018-12-01 22:39:02,268 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:39:02,268 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:39:02,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:39:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:39:02,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:39:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-12-01 22:39:02,560 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:39:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-01 22:39:02,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:39:02,734 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:39:02,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:39:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:39:02,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:39:02,928 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-01 22:39:02,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:39:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-12-01 22:39:03,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-01 22:39:03,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 6, 5] total 10 [2018-12-01 22:39:03,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 22:39:03,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 22:39:03,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-01 22:39:03,111 INFO L87 Difference]: Start difference. First operand 298 states and 410 transitions. Second operand 10 states. [2018-12-01 22:39:13,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:39:13,347 INFO L93 Difference]: Finished difference Result 857 states and 1230 transitions. [2018-12-01 22:39:13,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-01 22:39:13,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2018-12-01 22:39:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:39:13,350 INFO L225 Difference]: With dead ends: 857 [2018-12-01 22:39:13,350 INFO L226 Difference]: Without dead ends: 605 [2018-12-01 22:39:13,351 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 [2018-12-01 22:39:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2018-12-01 22:39:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 557. [2018-12-01 22:39:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-12-01 22:39:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 766 transitions. [2018-12-01 22:39:13,382 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 766 transitions. Word has length 130 [2018-12-01 22:39:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:39:13,383 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 766 transitions. [2018-12-01 22:39:13,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 22:39:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 766 transitions. [2018-12-01 22:39:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-01 22:39:13,385 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:39:13,385 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] [2018-12-01 22:39:13,385 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:39:13,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:39:13,386 INFO L82 PathProgramCache]: Analyzing trace with hash -178289648, now seen corresponding path program 1 times [2018-12-01 22:39:13,386 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:39:13,387 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:39:13,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:39:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:39:13,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:39:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-12-01 22:39:13,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:39:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-12-01 22:39:14,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 22:39:14,024 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/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 [2018-12-01 22:39:14,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:39:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:39:14,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:39:14,228 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 [2018-12-01 22:39:14,233 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 [2018-12-01 22:39:14,235 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 [2018-12-01 22:39:14,236 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,243 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,246 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,251 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:12, output treesize:16 [2018-12-01 22:39:14,279 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:39:14,280 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 [2018-12-01 22:39:14,281 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,289 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:16 [2018-12-01 22:39:14,319 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:39:14,320 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 [2018-12-01 22:39:14,320 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,323 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,324 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:3 [2018-12-01 22:39:14,341 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:39:14,342 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 [2018-12-01 22:39:14,342 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,343 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:1 [2018-12-01 22:39:14,359 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-01 22:39:14,360 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,360 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,361 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:1 [2018-12-01 22:39:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-12-01 22:39:14,375 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 22:39:14,410 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 [2018-12-01 22:39:14,410 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,411 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:3 [2018-12-01 22:39:14,477 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 [2018-12-01 22:39:14,478 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:39:14,481 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:12 [2018-12-01 22:39:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-12-01 22:39:14,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-12-01 22:39:14,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 5] total 18 [2018-12-01 22:39:14,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 22:39:14,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 22:39:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-12-01 22:39:14,544 INFO L87 Difference]: Start difference. First operand 557 states and 766 transitions. Second operand 18 states. [2018-12-01 22:39:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 22:39:23,802 INFO L93 Difference]: Finished difference Result 1142 states and 1571 transitions. [2018-12-01 22:39:23,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-01 22:39:23,803 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2018-12-01 22:39:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 22:39:23,804 INFO L225 Difference]: With dead ends: 1142 [2018-12-01 22:39:23,804 INFO L226 Difference]: Without dead ends: 542 [2018-12-01 22:39:23,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 502 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2018-12-01 22:39:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-12-01 22:39:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 510. [2018-12-01 22:39:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2018-12-01 22:39:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 691 transitions. [2018-12-01 22:39:23,829 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 691 transitions. Word has length 130 [2018-12-01 22:39:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 22:39:23,829 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 691 transitions. [2018-12-01 22:39:23,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 22:39:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 691 transitions. [2018-12-01 22:39:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-12-01 22:39:23,830 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 22:39:23,830 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] [2018-12-01 22:39:23,830 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 22:39:23,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 22:39:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash 612811314, now seen corresponding path program 1 times [2018-12-01 22:39:23,831 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-01 22:39:23,831 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_65df3b39-66b1-4cd9-8013-0a6cf8f207c5/bin-2019/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-01 22:39:23,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 22:45:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 22:45:43,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 22:45:43,019 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 [2018-12-01 22:45:43,039 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,064 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 [2018-12-01 22:45:43,137 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,152 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,153 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 [2018-12-01 22:45:43,153 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,188 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,189 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:43,189 INFO L683 Elim1Store]: detected equality via solver [2018-12-01 22:45:43,190 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 [2018-12-01 22:45:43,190 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,201 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,210 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,224 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,224 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:35, output treesize:22 [2018-12-01 22:45:43,479 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 [2018-12-01 22:45:43,495 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 [2018-12-01 22:45:43,495 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,607 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 [2018-12-01 22:45:43,617 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 [2018-12-01 22:45:43,618 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,700 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 [2018-12-01 22:45:43,708 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 [2018-12-01 22:45:43,708 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:43,920 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 [2018-12-01 22:45:43,920 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-12-01 22:45:43,938 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 [2018-12-01 22:45:43,938 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:45,434 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 [2018-12-01 22:45:45,434 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:45,832 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 [2018-12-01 22:45:45,832 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:46,738 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 [2018-12-01 22:45:46,739 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:46,873 INFO L267 ElimStorePlain]: Start of recursive call 8: 8 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:45:46,999 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:45:47,114 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:45:47,224 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:45:47,386 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-01 22:45:47,386 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 1 variables, input treesize:215, output treesize:283 [2018-12-01 22:45:47,704 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-12-01 22:45:48,625 WARN L180 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-12-01 22:45:49,132 WARN L180 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2018-12-01 22:45:50,148 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2018-12-01 22:45:50,273 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 [2018-12-01 22:45:50,285 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:50,289 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 [2018-12-01 22:45:50,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:50,429 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:50,431 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:50,462 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 [2018-12-01 22:45:50,463 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:50,568 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-01 22:45:50,689 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. [2018-12-01 22:45:50,690 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:70, output treesize:131 [2018-12-01 22:45:52,098 WARN L180 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-12-01 22:45:52,122 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 [2018-12-01 22:45:52,134 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:52,138 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 [2018-12-01 22:45:52,138 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:52,166 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 [2018-12-01 22:45:52,167 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:52,182 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 [2018-12-01 22:45:52,182 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:52,191 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:45:52,373 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 [2018-12-01 22:45:52,387 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:52,391 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 [2018-12-01 22:45:52,392 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:53,062 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 [2018-12-01 22:45:53,062 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:53,684 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:53,684 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 [2018-12-01 22:45:53,685 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:54,254 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:54,257 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:54,259 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:54,261 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:54,275 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:54,281 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 [2018-12-01 22:45:54,282 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:54,918 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 [2018-12-01 22:45:54,919 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:55,425 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:55,429 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:55,431 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:55,466 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 [2018-12-01 22:45:55,467 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-12-01 22:45:56,190 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:56,194 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 [2018-12-01 22:45:56,194 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:56,880 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 [2018-12-01 22:45:56,881 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:57,510 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:57,516 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:45:57,535 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 [2018-12-01 22:45:57,535 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-12-01 22:45:58,236 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 [2018-12-01 22:45:58,236 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:58,239 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 [2018-12-01 22:45:58,239 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:58,765 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 [2018-12-01 22:45:58,765 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:58,770 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 [2018-12-01 22:45:58,770 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:58,774 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 [2018-12-01 22:45:58,775 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:58,778 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 [2018-12-01 22:45:58,778 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:59,253 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 [2018-12-01 22:45:59,253 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-12-01 22:45:59,729 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 [2018-12-01 22:45:59,730 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-01 22:46:00,193 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:46:00,197 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 [2018-12-01 22:46:00,197 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-01 22:46:00,602 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:46:00,603 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 [2018-12-01 22:46:00,603 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-01 22:46:01,201 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 [2018-12-01 22:46:01,201 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-01 22:46:01,465 INFO L701 Elim1Store]: detected not equals via solver [2018-12-01 22:46:01,468 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 [2018-12-01 22:46:01,468 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-01 22:46:01,570 INFO L267 ElimStorePlain]: Start of recursive call 6: 19 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-01 22:46:01,624 INFO L267 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-01 22:46:01,624 INFO L202 ElimStorePlain]: Needed 27 recursive calls to eliminate 17 variables, input treesize:137, output treesize:5 [2018-12-01 22:46:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-12-01 22:46:01,786 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 22:46:01,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 22:46:01,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-12-01 22:46:01,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 22:46:01,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 22:46:01,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-12-01 22:46:01,917 INFO L87 Difference]: Start difference. First operand 510 states and 691 transitions. Second operand 15 states. [2018-12-01 22:46:13,629 WARN L180 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2018-12-01 22:46:17,733 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-12-01 22:46:27,231 WARN L180 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 111 DAG size of output: 111 [2018-12-01 22:46:37,862 WARN L180 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2018-12-01 22:46:43,393 WARN L180 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2018-12-01 22:47:00,876 WARN L180 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2018-12-01 22:47:25,282 WARN L180 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 119 DAG size of output: 119 [2018-12-01 22:47:26,596 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-01 22:47:26,597 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 [2018-12-01 22:47:26,600 INFO L168 Benchmark]: Toolchain (without parser) took 518003.46 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 332.9 MB). Free memory was 938.0 MB in the beginning and 1.3 GB in the end (delta: -359.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:47:26,600 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:47:26,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. [2018-12-01 22:47:26,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:47:26,601 INFO L168 Benchmark]: Boogie Preprocessor took 59.77 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-01 22:47:26,601 INFO L168 Benchmark]: RCFGBuilder took 3515.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -50.7 MB). Peak memory consumption was 374.0 MB. Max. memory is 11.5 GB. [2018-12-01 22:47:26,602 INFO L168 Benchmark]: TraceAbstraction took 513971.37 ms. Allocated memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 3.7 MB). Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -143.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 22:47:26,603 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 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 427.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.47 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 59.77 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3515.31 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 185.6 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -50.7 MB). Peak memory consumption was 374.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 513971.37 ms. Allocated memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 3.7 MB). Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -143.6 MB). There was no memory consumed. 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...