./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c --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_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 3a5c86310b0cee0c3fda3eee1e81be72e3f86b95 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 15:58:20,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:58:20,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:58:20,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:58:20,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:58:20,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:58:20,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:58:20,852 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:58:20,853 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:58:20,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:58:20,854 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:58:20,854 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:58:20,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:58:20,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:58:20,855 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:58:20,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:58:20,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:58:20,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:58:20,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:58:20,859 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:58:20,859 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:58:20,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:58:20,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:58:20,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:58:20,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:58:20,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:58:20,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:58:20,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:58:20,863 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:58:20,864 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:58:20,864 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:58:20,864 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:58:20,864 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:58:20,865 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:58:20,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:58:20,865 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:58:20,866 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 15:58:20,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:58:20,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:58:20,873 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 15:58:20,874 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 15:58:20,874 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 15:58:20,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:58:20,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 15:58:20,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:58:20,876 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:58:20,876 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:58:20,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 15:58:20,877 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 15:58:20,877 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:58:20,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 15:58:20,877 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 15:58:20,877 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_e117a4cb-f141-4fc9-8598-9036e022e189/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 -> 3a5c86310b0cee0c3fda3eee1e81be72e3f86b95 [2018-12-09 15:58:20,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:58:20,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:58:20,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:58:20,904 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:58:20,904 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:58:20,905 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c [2018-12-09 15:58:20,939 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/data/d29b5c0bf/a0a11d7d5140413ba992d00b17c91fd3/FLAG9853b3da8 [2018-12-09 15:58:21,390 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:58:21,390 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/sv-benchmarks/c/eca-rers2012/Problem14_label45_true-unreach-call_false-termination.c [2018-12-09 15:58:21,397 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/data/d29b5c0bf/a0a11d7d5140413ba992d00b17c91fd3/FLAG9853b3da8 [2018-12-09 15:58:21,406 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/data/d29b5c0bf/a0a11d7d5140413ba992d00b17c91fd3 [2018-12-09 15:58:21,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:58:21,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:58:21,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:58:21,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:58:21,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:58:21,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56acabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21, skipping insertion in model container [2018-12-09 15:58:21,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:58:21,444 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:58:21,641 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:58:21,644 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:58:21,763 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:58:21,775 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:58:21,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21 WrapperNode [2018-12-09 15:58:21,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:58:21,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:58:21,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:58:21,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:58:21,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:58:21,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:58:21,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:58:21,805 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:58:21,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... [2018-12-09 15:58:21,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:58:21,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:58:21,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:58:21,859 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:58:21,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:58:21,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 15:58:21,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 15:58:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-12-09 15:58:21,896 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-12-09 15:58:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:58:21,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:58:21,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 15:58:21,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 15:58:22,583 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:58:22,583 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 15:58:22,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:22 BoogieIcfgContainer [2018-12-09 15:58:22,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:58:22,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 15:58:22,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 15:58:22,587 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 15:58:22,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:58:21" (1/3) ... [2018-12-09 15:58:22,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c3e2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:58:22, skipping insertion in model container [2018-12-09 15:58:22,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:21" (2/3) ... [2018-12-09 15:58:22,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c3e2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:58:22, skipping insertion in model container [2018-12-09 15:58:22,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:22" (3/3) ... [2018-12-09 15:58:22,590 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label45_true-unreach-call_false-termination.c [2018-12-09 15:58:22,599 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 15:58:22,606 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 15:58:22,617 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 15:58:22,642 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 15:58:22,642 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 15:58:22,642 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 15:58:22,642 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:58:22,642 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:58:22,642 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 15:58:22,642 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:58:22,643 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 15:58:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2018-12-09 15:58:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-09 15:58:22,667 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:58:22,667 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:58:22,669 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:58:22,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1020079963, now seen corresponding path program 1 times [2018-12-09 15:58:22,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:58:22,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:22,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:58:22,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:22,705 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:58:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:58:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:58:22,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:58:22,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:58:22,859 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:58:22,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:58:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:58:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:22,877 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2018-12-09 15:58:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:58:23,765 INFO L93 Difference]: Finished difference Result 890 states and 1606 transitions. [2018-12-09 15:58:23,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:58:23,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-12-09 15:58:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:58:23,777 INFO L225 Difference]: With dead ends: 890 [2018-12-09 15:58:23,778 INFO L226 Difference]: Without dead ends: 554 [2018-12-09 15:58:23,783 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:23,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-12-09 15:58:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 372. [2018-12-09 15:58:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-12-09 15:58:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 524 transitions. [2018-12-09 15:58:23,829 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 524 transitions. Word has length 42 [2018-12-09 15:58:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:58:23,829 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 524 transitions. [2018-12-09 15:58:23,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:58:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 524 transitions. [2018-12-09 15:58:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-12-09 15:58:23,832 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:58:23,832 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:58:23,833 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:58:23,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2050989129, now seen corresponding path program 1 times [2018-12-09 15:58:23,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:58:23,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:23,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:58:23,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:23,834 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:58:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:58:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:58:23,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:58:23,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:58:23,920 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:58:23,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:58:23,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:58:23,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:23,922 INFO L87 Difference]: Start difference. First operand 372 states and 524 transitions. Second operand 4 states. [2018-12-09 15:58:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:58:24,602 INFO L93 Difference]: Finished difference Result 1466 states and 2091 transitions. [2018-12-09 15:58:24,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:58:24,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2018-12-09 15:58:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:58:24,606 INFO L225 Difference]: With dead ends: 1466 [2018-12-09 15:58:24,606 INFO L226 Difference]: Without dead ends: 736 [2018-12-09 15:58:24,608 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-12-09 15:58:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 554. [2018-12-09 15:58:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-12-09 15:58:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 809 transitions. [2018-12-09 15:58:24,624 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 809 transitions. Word has length 125 [2018-12-09 15:58:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:58:24,625 INFO L480 AbstractCegarLoop]: Abstraction has 554 states and 809 transitions. [2018-12-09 15:58:24,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:58:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 809 transitions. [2018-12-09 15:58:24,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-12-09 15:58:24,627 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:58:24,627 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:58:24,627 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:58:24,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:24,627 INFO L82 PathProgramCache]: Analyzing trace with hash 488627185, now seen corresponding path program 1 times [2018-12-09 15:58:24,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:58:24,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:24,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:58:24,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:24,629 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:58:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:58:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:58:24,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:58:24,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:58:24,716 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:58:24,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:58:24,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:58:24,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:24,717 INFO L87 Difference]: Start difference. First operand 554 states and 809 transitions. Second operand 4 states. [2018-12-09 15:58:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:58:25,355 INFO L93 Difference]: Finished difference Result 2194 states and 3264 transitions. [2018-12-09 15:58:25,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:58:25,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2018-12-09 15:58:25,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:58:25,359 INFO L225 Difference]: With dead ends: 2194 [2018-12-09 15:58:25,360 INFO L226 Difference]: Without dead ends: 1646 [2018-12-09 15:58:25,361 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:58:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2018-12-09 15:58:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1646. [2018-12-09 15:58:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-12-09 15:58:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2286 transitions. [2018-12-09 15:58:25,386 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2286 transitions. Word has length 137 [2018-12-09 15:58:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:58:25,387 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2286 transitions. [2018-12-09 15:58:25,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:58:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2286 transitions. [2018-12-09 15:58:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-12-09 15:58:25,391 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:58:25,391 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-09 15:58:25,391 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:58:25,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1957605909, now seen corresponding path program 1 times [2018-12-09 15:58:25,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:58:25,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:25,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:58:25,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:25,392 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:58:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:58:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:58:25,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:58:25,500 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:58:25,500 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-12-09 15:58:25,502 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:58:25,528 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:58:25,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:58:25,750 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 15:58:25,751 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 1129 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1129 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 24 variables. [2018-12-09 15:58:25,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:25,763 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 15:58:26,057 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 77.72% of their original sizes. [2018-12-09 15:58:26,057 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 15:58:26,084 INFO L418 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-12-09 15:58:26,084 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 15:58:26,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 15:58:26,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-12-09 15:58:26,085 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:58:26,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 15:58:26,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 15:58:26,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-09 15:58:26,086 INFO L87 Difference]: Start difference. First operand 1646 states and 2286 transitions. Second operand 6 states. [2018-12-09 15:58:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:58:35,699 INFO L93 Difference]: Finished difference Result 3105 states and 4347 transitions. [2018-12-09 15:58:35,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 15:58:35,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2018-12-09 15:58:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:58:35,702 INFO L225 Difference]: With dead ends: 3105 [2018-12-09 15:58:35,702 INFO L226 Difference]: Without dead ends: 1647 [2018-12-09 15:58:35,703 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:58:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2018-12-09 15:58:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1646. [2018-12-09 15:58:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-12-09 15:58:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2254 transitions. [2018-12-09 15:58:35,724 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2254 transitions. Word has length 256 [2018-12-09 15:58:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:58:35,724 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2254 transitions. [2018-12-09 15:58:35,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 15:58:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2254 transitions. [2018-12-09 15:58:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-12-09 15:58:35,727 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:58:35,727 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-12-09 15:58:35,728 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:58:35,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash 453969074, now seen corresponding path program 1 times [2018-12-09 15:58:35,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:58:35,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:35,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:58:35,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:58:35,729 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:58:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:58:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 191 proven. 173 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 15:58:36,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:58:36,126 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:58:36,126 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-12-09 15:58:36,126 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:58:36,129 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:58:36,129 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:58:36,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 15:58:36,285 INFO L272 AbstractInterpreter]: Visited 128 different actions 249 times. Merged at 3 different actions 3 times. Never widened. Performed 2341 root evaluator evaluations with a maximum evaluation depth of 3. Performed 2341 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-12-09 15:58:36,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:58:36,286 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 15:58:36,535 INFO L227 lantSequenceWeakener]: Weakened 337 states. On average, predicates are now at 77.66% of their original sizes. [2018-12-09 15:58:36,536 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 15:58:36,581 INFO L418 sIntCurrentIteration]: We unified 339 AI predicates to 339 [2018-12-09 15:58:36,581 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 15:58:36,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 15:58:36,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-12-09 15:58:36,581 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:58:36,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 15:58:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 15:58:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-09 15:58:36,582 INFO L87 Difference]: Start difference. First operand 1646 states and 2254 transitions. Second operand 10 states. [2018-12-09 15:59:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:10,081 INFO L93 Difference]: Finished difference Result 3502 states and 4775 transitions. [2018-12-09 15:59:10,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 15:59:10,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2018-12-09 15:59:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:10,086 INFO L225 Difference]: With dead ends: 3502 [2018-12-09 15:59:10,087 INFO L226 Difference]: Without dead ends: 1829 [2018-12-09 15:59:10,089 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 348 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-12-09 15:59:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2018-12-09 15:59:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1828. [2018-12-09 15:59:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2018-12-09 15:59:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2447 transitions. [2018-12-09 15:59:10,124 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2447 transitions. Word has length 340 [2018-12-09 15:59:10,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:10,124 INFO L480 AbstractCegarLoop]: Abstraction has 1828 states and 2447 transitions. [2018-12-09 15:59:10,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 15:59:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2447 transitions. [2018-12-09 15:59:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-12-09 15:59:10,129 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:10,129 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:59:10,129 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:10,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:10,130 INFO L82 PathProgramCache]: Analyzing trace with hash 501990874, now seen corresponding path program 1 times [2018-12-09 15:59:10,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:10,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:10,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:10,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:10,131 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 241 proven. 124 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-12-09 15:59:10,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:10,342 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:10,342 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 381 with the following transitions: [2018-12-09 15:59:10,342 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:10,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:10,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:59:13,580 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 15:59:13,580 INFO L272 AbstractInterpreter]: Visited 128 different actions 377 times. Merged at 6 different actions 13 times. Never widened. Performed 3650 root evaluator evaluations with a maximum evaluation depth of 21. Performed 3650 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-12-09 15:59:13,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:13,583 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 15:59:14,161 INFO L227 lantSequenceWeakener]: Weakened 377 states. On average, predicates are now at 80.27% of their original sizes. [2018-12-09 15:59:14,161 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 15:59:14,185 INFO L418 sIntCurrentIteration]: We unified 379 AI predicates to 379 [2018-12-09 15:59:14,185 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 15:59:14,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 15:59:14,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-12-09 15:59:14,185 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:59:14,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 15:59:14,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 15:59:14,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-09 15:59:14,186 INFO L87 Difference]: Start difference. First operand 1828 states and 2447 transitions. Second operand 9 states. [2018-12-09 15:59:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:24,632 INFO L93 Difference]: Finished difference Result 4228 states and 5814 transitions. [2018-12-09 15:59:24,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 15:59:24,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 380 [2018-12-09 15:59:24,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:24,636 INFO L225 Difference]: With dead ends: 4228 [2018-12-09 15:59:24,636 INFO L226 Difference]: Without dead ends: 2588 [2018-12-09 15:59:24,638 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 386 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-12-09 15:59:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2018-12-09 15:59:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2574. [2018-12-09 15:59:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2574 states. [2018-12-09 15:59:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 3373 transitions. [2018-12-09 15:59:24,664 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 3373 transitions. Word has length 380 [2018-12-09 15:59:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:24,665 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 3373 transitions. [2018-12-09 15:59:24,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 15:59:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 3373 transitions. [2018-12-09 15:59:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-12-09 15:59:24,668 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:24,668 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-12-09 15:59:24,668 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:24,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1385945670, now seen corresponding path program 1 times [2018-12-09 15:59:24,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:24,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:24,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:24,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:24,670 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 318 proven. 233 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-12-09 15:59:25,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:25,083 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:25,083 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-12-09 15:59:25,084 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:25,085 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:25,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:59:25,198 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 15:59:25,199 INFO L272 AbstractInterpreter]: Visited 129 different actions 252 times. Merged at 4 different actions 4 times. Never widened. Performed 2331 root evaluator evaluations with a maximum evaluation depth of 16. Performed 2331 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-12-09 15:59:25,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:25,200 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 15:59:25,405 INFO L227 lantSequenceWeakener]: Weakened 436 states. On average, predicates are now at 77.59% of their original sizes. [2018-12-09 15:59:25,405 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 15:59:25,439 INFO L418 sIntCurrentIteration]: We unified 438 AI predicates to 438 [2018-12-09 15:59:25,440 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 15:59:25,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 15:59:25,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-12-09 15:59:25,440 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 15:59:25,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 15:59:25,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 15:59:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-09 15:59:25,440 INFO L87 Difference]: Start difference. First operand 2574 states and 3373 transitions. Second operand 10 states. [2018-12-09 15:59:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:39,106 INFO L93 Difference]: Finished difference Result 4778 states and 6365 transitions. [2018-12-09 15:59:39,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 15:59:39,106 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 439 [2018-12-09 15:59:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:39,110 INFO L225 Difference]: With dead ends: 4778 [2018-12-09 15:59:39,110 INFO L226 Difference]: Without dead ends: 2576 [2018-12-09 15:59:39,111 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 446 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-12-09 15:59:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2018-12-09 15:59:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2574. [2018-12-09 15:59:39,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2574 states. [2018-12-09 15:59:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 3365 transitions. [2018-12-09 15:59:39,151 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 3365 transitions. Word has length 439 [2018-12-09 15:59:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:39,152 INFO L480 AbstractCegarLoop]: Abstraction has 2574 states and 3365 transitions. [2018-12-09 15:59:39,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 15:59:39,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 3365 transitions. [2018-12-09 15:59:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-12-09 15:59:39,154 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:39,155 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:59:39,155 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:39,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1323887270, now seen corresponding path program 1 times [2018-12-09 15:59:39,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:39,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:39,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:39,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:39,156 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-12-09 15:59:39,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:39,302 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:39,302 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-12-09 15:59:39,302 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:39,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:39,304 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:59:43,085 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 15:59:43,085 INFO L272 AbstractInterpreter]: Visited 130 different actions 513 times. Merged at 8 different actions 26 times. Never widened. Performed 5130 root evaluator evaluations with a maximum evaluation depth of 21. Performed 5130 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-12-09 15:59:43,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:43,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 15:59:43,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:43,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 15:59:43,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:43,094 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 15:59:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:43,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:59:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-12-09 15:59:43,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 15:59:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 436 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-12-09 15:59:43,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 15:59:43,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-12-09 15:59:43,446 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 15:59:43,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 15:59:43,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 15:59:43,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:59:43,447 INFO L87 Difference]: Start difference. First operand 2574 states and 3365 transitions. Second operand 9 states. [2018-12-09 15:59:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:44,493 INFO L93 Difference]: Finished difference Result 6594 states and 9337 transitions. [2018-12-09 15:59:44,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 15:59:44,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 453 [2018-12-09 15:59:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:44,509 INFO L225 Difference]: With dead ends: 6594 [2018-12-09 15:59:44,509 INFO L226 Difference]: Without dead ends: 4392 [2018-12-09 15:59:44,513 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 907 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2018-12-09 15:59:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2018-12-09 15:59:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3378. [2018-12-09 15:59:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3378 states. [2018-12-09 15:59:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4444 transitions. [2018-12-09 15:59:44,577 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4444 transitions. Word has length 453 [2018-12-09 15:59:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:44,578 INFO L480 AbstractCegarLoop]: Abstraction has 3378 states and 4444 transitions. [2018-12-09 15:59:44,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 15:59:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4444 transitions. [2018-12-09 15:59:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-12-09 15:59:44,581 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:44,581 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:59:44,582 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:44,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1301052626, now seen corresponding path program 1 times [2018-12-09 15:59:44,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:44,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:44,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:44,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:44,582 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 330 proven. 136 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-12-09 15:59:44,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:44,782 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:44,782 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-12-09 15:59:44,782 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:44,784 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:44,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:59:48,450 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 15:59:48,450 INFO L272 AbstractInterpreter]: Visited 131 different actions 516 times. Merged at 8 different actions 25 times. Never widened. Performed 5156 root evaluator evaluations with a maximum evaluation depth of 21. Performed 5156 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-12-09 15:59:48,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:48,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 15:59:48,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:48,453 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 15:59:48,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:48,459 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 15:59:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:48,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:59:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 789 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-12-09 15:59:48,611 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 15:59:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 330 proven. 136 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-12-09 15:59:48,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 15:59:48,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-12-09 15:59:48,757 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 15:59:48,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 15:59:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 15:59:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-12-09 15:59:48,759 INFO L87 Difference]: Start difference. First operand 3378 states and 4444 transitions. Second operand 10 states. [2018-12-09 15:59:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:49,861 INFO L93 Difference]: Finished difference Result 7562 states and 10143 transitions. [2018-12-09 15:59:49,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 15:59:49,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 544 [2018-12-09 15:59:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:49,875 INFO L225 Difference]: With dead ends: 7562 [2018-12-09 15:59:49,875 INFO L226 Difference]: Without dead ends: 4368 [2018-12-09 15:59:49,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1098 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2018-12-09 15:59:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2018-12-09 15:59:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 4176. [2018-12-09 15:59:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4176 states. [2018-12-09 15:59:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5313 transitions. [2018-12-09 15:59:49,932 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5313 transitions. Word has length 544 [2018-12-09 15:59:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:49,932 INFO L480 AbstractCegarLoop]: Abstraction has 4176 states and 5313 transitions. [2018-12-09 15:59:49,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 15:59:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5313 transitions. [2018-12-09 15:59:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2018-12-09 15:59:49,936 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:49,936 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:59:49,937 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:49,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:49,937 INFO L82 PathProgramCache]: Analyzing trace with hash 642600657, now seen corresponding path program 1 times [2018-12-09 15:59:49,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:49,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:49,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:49,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:49,937 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 471 proven. 427 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-12-09 15:59:50,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:50,458 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:50,459 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 548 with the following transitions: [2018-12-09 15:59:50,459 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:50,460 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:50,460 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 15:59:54,128 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 15:59:54,128 INFO L272 AbstractInterpreter]: Visited 131 different actions 521 times. Merged at 9 different actions 30 times. Never widened. Performed 5182 root evaluator evaluations with a maximum evaluation depth of 21. Performed 5182 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-12-09 15:59:54,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:54,130 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 15:59:54,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:54,130 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 15:59:54,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:54,136 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 15:59:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:54,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:59:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 568 proven. 2 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-12-09 15:59:54,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 15:59:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 568 proven. 2 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2018-12-09 15:59:54,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 15:59:54,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-12-09 15:59:54,500 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 15:59:54,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 15:59:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 15:59:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-12-09 15:59:54,500 INFO L87 Difference]: Start difference. First operand 4176 states and 5313 transitions. Second operand 17 states. [2018-12-09 15:59:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:59:57,314 INFO L93 Difference]: Finished difference Result 7611 states and 10052 transitions. [2018-12-09 15:59:57,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-12-09 15:59:57,314 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 547 [2018-12-09 15:59:57,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:59:57,322 INFO L225 Difference]: With dead ends: 7611 [2018-12-09 15:59:57,322 INFO L226 Difference]: Without dead ends: 2737 [2018-12-09 15:59:57,331 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1112 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=819, Invalid=2963, Unknown=0, NotChecked=0, Total=3782 [2018-12-09 15:59:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2018-12-09 15:59:57,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2618. [2018-12-09 15:59:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2618 states. [2018-12-09 15:59:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 2775 transitions. [2018-12-09 15:59:57,374 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 2775 transitions. Word has length 547 [2018-12-09 15:59:57,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:59:57,374 INFO L480 AbstractCegarLoop]: Abstraction has 2618 states and 2775 transitions. [2018-12-09 15:59:57,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 15:59:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 2775 transitions. [2018-12-09 15:59:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-12-09 15:59:57,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:59:57,378 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:59:57,378 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 15:59:57,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:59:57,378 INFO L82 PathProgramCache]: Analyzing trace with hash -142539850, now seen corresponding path program 1 times [2018-12-09 15:59:57,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 15:59:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:57,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:59:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:59:57,379 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 15:59:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:59:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 527 proven. 119 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-12-09 15:59:57,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:59:57,656 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 15:59:57,656 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 677 with the following transitions: [2018-12-09 15:59:57,656 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 15:59:57,658 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 15:59:57,658 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:01,406 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:01,406 INFO L272 AbstractInterpreter]: Visited 191 different actions 768 times. Merged at 9 different actions 37 times. Widened at 1 different actions 2 times. Performed 8491 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8491 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-12-09 16:00:01,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:01,408 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:01,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:01,409 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 16:00:01,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:01,414 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:01,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 934 proven. 2 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-12-09 16:00:01,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1294 backedges. 527 proven. 119 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-12-09 16:00:01,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:01,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-12-09 16:00:01,871 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:01,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 16:00:01,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 16:00:01,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-12-09 16:00:01,872 INFO L87 Difference]: Start difference. First operand 2618 states and 2775 transitions. Second operand 7 states. [2018-12-09 16:00:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:02,525 INFO L93 Difference]: Finished difference Result 5910 states and 6668 transitions. [2018-12-09 16:00:02,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 16:00:02,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2018-12-09 16:00:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:02,534 INFO L225 Difference]: With dead ends: 5910 [2018-12-09 16:00:02,534 INFO L226 Difference]: Without dead ends: 3664 [2018-12-09 16:00:02,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1353 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-09 16:00:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2018-12-09 16:00:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3556. [2018-12-09 16:00:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3556 states. [2018-12-09 16:00:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 3814 transitions. [2018-12-09 16:00:02,590 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 3814 transitions. Word has length 676 [2018-12-09 16:00:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:02,590 INFO L480 AbstractCegarLoop]: Abstraction has 3556 states and 3814 transitions. [2018-12-09 16:00:02,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 16:00:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 3814 transitions. [2018-12-09 16:00:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-12-09 16:00:02,598 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:02,598 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:00:02,599 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:02,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash -39341501, now seen corresponding path program 1 times [2018-12-09 16:00:02,599 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:02,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:02,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:02,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:02,600 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 571 proven. 883 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-12-09 16:00:03,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:03,652 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:03,652 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 803 with the following transitions: [2018-12-09 16:00:03,652 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:03,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:03,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:07,389 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:07,389 INFO L272 AbstractInterpreter]: Visited 191 different actions 764 times. Merged at 9 different actions 33 times. Widened at 1 different actions 1 times. Performed 8409 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8409 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-12-09 16:00:07,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:07,391 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:07,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:07,391 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 16:00:07,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:07,396 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:07,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1210 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-12-09 16:00:07,872 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 695 proven. 119 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2018-12-09 16:00:08,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:08,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-12-09 16:00:08,276 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:08,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 16:00:08,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 16:00:08,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-12-09 16:00:08,278 INFO L87 Difference]: Start difference. First operand 3556 states and 3814 transitions. Second operand 18 states. [2018-12-09 16:00:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:10,747 INFO L93 Difference]: Finished difference Result 7528 states and 8176 transitions. [2018-12-09 16:00:10,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 16:00:10,747 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 802 [2018-12-09 16:00:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:10,754 INFO L225 Difference]: With dead ends: 7528 [2018-12-09 16:00:10,754 INFO L226 Difference]: Without dead ends: 4344 [2018-12-09 16:00:10,759 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1678 GetRequests, 1620 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=706, Invalid=2716, Unknown=0, NotChecked=0, Total=3422 [2018-12-09 16:00:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2018-12-09 16:00:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4122. [2018-12-09 16:00:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4122 states. [2018-12-09 16:00:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4122 states to 4122 states and 4422 transitions. [2018-12-09 16:00:10,798 INFO L78 Accepts]: Start accepts. Automaton has 4122 states and 4422 transitions. Word has length 802 [2018-12-09 16:00:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:10,798 INFO L480 AbstractCegarLoop]: Abstraction has 4122 states and 4422 transitions. [2018-12-09 16:00:10,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 16:00:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4122 states and 4422 transitions. [2018-12-09 16:00:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-12-09 16:00:10,803 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:10,803 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-09 16:00:10,803 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:10,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash 733851430, now seen corresponding path program 1 times [2018-12-09 16:00:10,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:10,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:10,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:10,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:10,804 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 771 proven. 841 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-12-09 16:00:12,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:12,278 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:12,278 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 836 with the following transitions: [2018-12-09 16:00:12,279 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:12,280 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:12,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:16,021 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:16,022 INFO L272 AbstractInterpreter]: Visited 192 different actions 766 times. Merged at 9 different actions 31 times. Never widened. Performed 8449 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8449 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-12-09 16:00:16,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:16,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:16,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:16,023 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:00:16,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:16,029 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:16,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 1250 proven. 2 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2018-12-09 16:00:16,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 728 proven. 119 refuted. 0 times theorem prover too weak. 1096 trivial. 0 not checked. [2018-12-09 16:00:16,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:16,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-12-09 16:00:16,684 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:16,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 16:00:16,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 16:00:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-12-09 16:00:16,685 INFO L87 Difference]: Start difference. First operand 4122 states and 4422 transitions. Second operand 20 states. [2018-12-09 16:00:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:20,794 INFO L93 Difference]: Finished difference Result 7908 states and 8564 transitions. [2018-12-09 16:00:20,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-12-09 16:00:20,794 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 835 [2018-12-09 16:00:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:20,800 INFO L225 Difference]: With dead ends: 7908 [2018-12-09 16:00:20,800 INFO L226 Difference]: Without dead ends: 3976 [2018-12-09 16:00:20,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1705 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=823, Invalid=4147, Unknown=0, NotChecked=0, Total=4970 [2018-12-09 16:00:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2018-12-09 16:00:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 3920. [2018-12-09 16:00:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2018-12-09 16:00:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4127 transitions. [2018-12-09 16:00:20,837 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4127 transitions. Word has length 835 [2018-12-09 16:00:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:20,837 INFO L480 AbstractCegarLoop]: Abstraction has 3920 states and 4127 transitions. [2018-12-09 16:00:20,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 16:00:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4127 transitions. [2018-12-09 16:00:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2018-12-09 16:00:20,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:20,843 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-09 16:00:20,843 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:20,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:20,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1300355757, now seen corresponding path program 1 times [2018-12-09 16:00:20,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:20,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:20,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:20,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:20,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 665 proven. 1393 refuted. 0 times theorem prover too weak. 979 trivial. 0 not checked. [2018-12-09 16:00:22,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:22,419 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:22,419 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 1009 with the following transitions: [2018-12-09 16:00:22,420 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:22,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:22,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:26,225 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:26,225 INFO L272 AbstractInterpreter]: Visited 194 different actions 774 times. Merged at 10 different actions 31 times. Never widened. Performed 8559 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8559 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 14 fixpoints after 6 different actions. Largest state had 24 variables. [2018-12-09 16:00:26,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:26,227 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:26,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:26,227 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:00:26,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:26,233 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:26,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 1025 proven. 2 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-12-09 16:00:26,674 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3037 backedges. 1025 proven. 2 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2018-12-09 16:00:27,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:27,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-12-09 16:00:27,534 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 16:00:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 16:00:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2018-12-09 16:00:27,535 INFO L87 Difference]: Start difference. First operand 3920 states and 4127 transitions. Second operand 18 states. [2018-12-09 16:00:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:30,653 INFO L93 Difference]: Finished difference Result 7698 states and 8157 transitions. [2018-12-09 16:00:30,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 16:00:30,653 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1008 [2018-12-09 16:00:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:30,659 INFO L225 Difference]: With dead ends: 7698 [2018-12-09 16:00:30,659 INFO L226 Difference]: Without dead ends: 3764 [2018-12-09 16:00:30,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2090 GetRequests, 2032 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=643, Invalid=2779, Unknown=0, NotChecked=0, Total=3422 [2018-12-09 16:00:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2018-12-09 16:00:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3720. [2018-12-09 16:00:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2018-12-09 16:00:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 3856 transitions. [2018-12-09 16:00:30,702 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 3856 transitions. Word has length 1008 [2018-12-09 16:00:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:30,702 INFO L480 AbstractCegarLoop]: Abstraction has 3720 states and 3856 transitions. [2018-12-09 16:00:30,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 16:00:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 3856 transitions. [2018-12-09 16:00:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1138 [2018-12-09 16:00:30,709 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:30,709 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-09 16:00:30,709 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:30,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:30,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1908903455, now seen corresponding path program 1 times [2018-12-09 16:00:30,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:30,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:30,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:30,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:30,710 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3950 backedges. 1648 proven. 355 refuted. 0 times theorem prover too weak. 1947 trivial. 0 not checked. [2018-12-09 16:00:31,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:31,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:31,289 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 1138 with the following transitions: [2018-12-09 16:00:31,289 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:31,291 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:31,291 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:35,031 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:35,032 INFO L272 AbstractInterpreter]: Visited 195 different actions 783 times. Merged at 12 different actions 36 times. Never widened. Performed 8618 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8618 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 16 fixpoints after 4 different actions. Largest state had 24 variables. [2018-12-09 16:00:35,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:35,034 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:35,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:35,034 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 16:00:35,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:35,041 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:35,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3950 backedges. 2434 proven. 6 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2018-12-09 16:00:35,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3950 backedges. 1648 proven. 359 refuted. 0 times theorem prover too weak. 1943 trivial. 0 not checked. [2018-12-09 16:00:36,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:36,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2018-12-09 16:00:36,202 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:36,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 16:00:36,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 16:00:36,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-12-09 16:00:36,203 INFO L87 Difference]: Start difference. First operand 3720 states and 3856 transitions. Second operand 9 states. [2018-12-09 16:00:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:36,899 INFO L93 Difference]: Finished difference Result 7664 states and 8001 transitions. [2018-12-09 16:00:36,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-09 16:00:36,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1137 [2018-12-09 16:00:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:36,904 INFO L225 Difference]: With dead ends: 7664 [2018-12-09 16:00:36,904 INFO L226 Difference]: Without dead ends: 4134 [2018-12-09 16:00:36,907 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2297 GetRequests, 2275 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2018-12-09 16:00:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2018-12-09 16:00:36,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 3904. [2018-12-09 16:00:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2018-12-09 16:00:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 4044 transitions. [2018-12-09 16:00:36,945 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 4044 transitions. Word has length 1137 [2018-12-09 16:00:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:36,946 INFO L480 AbstractCegarLoop]: Abstraction has 3904 states and 4044 transitions. [2018-12-09 16:00:36,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 16:00:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 4044 transitions. [2018-12-09 16:00:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1386 [2018-12-09 16:00:36,955 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:36,955 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-09 16:00:36,955 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:36,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:36,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1054917965, now seen corresponding path program 1 times [2018-12-09 16:00:36,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:36,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:36,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:36,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:36,956 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1295 proven. 3040 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2018-12-09 16:00:38,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:38,718 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:38,718 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 1386 with the following transitions: [2018-12-09 16:00:38,718 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:38,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:38,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:42,480 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:42,480 INFO L272 AbstractInterpreter]: Visited 197 different actions 792 times. Merged at 12 different actions 37 times. Widened at 1 different actions 1 times. Performed 8856 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8856 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 18 fixpoints after 9 different actions. Largest state had 24 variables. [2018-12-09 16:00:42,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:42,483 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:42,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:42,483 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:00:42,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:42,489 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:42,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 3163 proven. 2 refuted. 0 times theorem prover too weak. 2937 trivial. 0 not checked. [2018-12-09 16:00:43,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6102 backedges. 1339 proven. 244 refuted. 0 times theorem prover too weak. 4519 trivial. 0 not checked. [2018-12-09 16:00:44,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:44,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-12-09 16:00:44,395 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:44,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 16:00:44,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 16:00:44,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-12-09 16:00:44,396 INFO L87 Difference]: Start difference. First operand 3904 states and 4044 transitions. Second operand 20 states. [2018-12-09 16:00:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:00:48,124 INFO L93 Difference]: Finished difference Result 8456 states and 9331 transitions. [2018-12-09 16:00:48,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-09 16:00:48,124 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 1385 [2018-12-09 16:00:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:00:48,135 INFO L225 Difference]: With dead ends: 8456 [2018-12-09 16:00:48,135 INFO L226 Difference]: Without dead ends: 4742 [2018-12-09 16:00:48,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2861 GetRequests, 2790 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=978, Invalid=4134, Unknown=0, NotChecked=0, Total=5112 [2018-12-09 16:00:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2018-12-09 16:00:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 3904. [2018-12-09 16:00:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2018-12-09 16:00:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 4030 transitions. [2018-12-09 16:00:48,199 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 4030 transitions. Word has length 1385 [2018-12-09 16:00:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:00:48,200 INFO L480 AbstractCegarLoop]: Abstraction has 3904 states and 4030 transitions. [2018-12-09 16:00:48,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 16:00:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 4030 transitions. [2018-12-09 16:00:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2018-12-09 16:00:48,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:00:48,212 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-12-09 16:00:48,212 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:00:48,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:48,213 INFO L82 PathProgramCache]: Analyzing trace with hash 245384140, now seen corresponding path program 1 times [2018-12-09 16:00:48,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:00:48,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:48,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:48,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:00:48,213 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:00:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8825 backedges. 1915 proven. 5275 refuted. 0 times theorem prover too weak. 1635 trivial. 0 not checked. [2018-12-09 16:00:51,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:51,525 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:00:51,525 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 1691 with the following transitions: [2018-12-09 16:00:51,525 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:00:51,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:00:51,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:00:55,309 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:00:55,309 INFO L272 AbstractInterpreter]: Visited 202 different actions 812 times. Merged at 11 different actions 37 times. Widened at 1 different actions 2 times. Performed 9123 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9123 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 20 fixpoints after 11 different actions. Largest state had 24 variables. [2018-12-09 16:00:55,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:00:55,312 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:00:55,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:00:55,312 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 16:00:55,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:00:55,318 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:00:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:00:55,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:00:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8825 backedges. 2841 proven. 82 refuted. 0 times theorem prover too weak. 5902 trivial. 0 not checked. [2018-12-09 16:00:56,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:00:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8825 backedges. 2915 proven. 121 refuted. 0 times theorem prover too weak. 5789 trivial. 0 not checked. [2018-12-09 16:00:57,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:00:57,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 9] total 39 [2018-12-09 16:00:57,848 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:00:57,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-12-09 16:00:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-12-09 16:00:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2018-12-09 16:00:57,850 INFO L87 Difference]: Start difference. First operand 3904 states and 4030 transitions. Second operand 33 states. [2018-12-09 16:01:07,391 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-12-09 16:01:12,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:01:12,828 INFO L93 Difference]: Finished difference Result 8533 states and 8986 transitions. [2018-12-09 16:01:12,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-12-09 16:01:12,829 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1690 [2018-12-09 16:01:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:01:12,842 INFO L225 Difference]: With dead ends: 8533 [2018-12-09 16:01:12,843 INFO L226 Difference]: Without dead ends: 4631 [2018-12-09 16:01:12,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3560 GetRequests, 3412 SyntacticMatches, 3 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3414, Invalid=18048, Unknown=0, NotChecked=0, Total=21462 [2018-12-09 16:01:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2018-12-09 16:01:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4090. [2018-12-09 16:01:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4090 states. [2018-12-09 16:01:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 4188 transitions. [2018-12-09 16:01:12,903 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 4188 transitions. Word has length 1690 [2018-12-09 16:01:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:01:12,904 INFO L480 AbstractCegarLoop]: Abstraction has 4090 states and 4188 transitions. [2018-12-09 16:01:12,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-12-09 16:01:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 4188 transitions. [2018-12-09 16:01:12,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1943 [2018-12-09 16:01:12,922 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:01:12,923 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:01:12,923 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:01:12,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:01:12,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1961048688, now seen corresponding path program 1 times [2018-12-09 16:01:12,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:01:12,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:12,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:01:12,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:12,924 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:01:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:01:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11966 backedges. 2511 proven. 6788 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2018-12-09 16:01:16,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:01:16,636 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:01:16,637 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 1943 with the following transitions: [2018-12-09 16:01:16,637 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [718], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:01:16,638 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:01:16,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:01:20,452 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:01:20,453 INFO L272 AbstractInterpreter]: Visited 203 different actions 816 times. Merged at 11 different actions 37 times. Widened at 1 different actions 1 times. Performed 9193 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9193 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 21 fixpoints after 12 different actions. Largest state had 24 variables. [2018-12-09 16:01:20,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:01:20,454 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:01:20,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:01:20,454 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:01:20,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:01:20,460 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:01:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:01:20,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:01:22,646 WARN L180 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-12-09 16:01:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11966 backedges. 5770 proven. 12 refuted. 0 times theorem prover too weak. 6184 trivial. 0 not checked. [2018-12-09 16:01:23,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:01:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11966 backedges. 4301 proven. 718 refuted. 0 times theorem prover too weak. 6947 trivial. 0 not checked. [2018-12-09 16:01:27,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:01:27,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9, 11] total 41 [2018-12-09 16:01:27,278 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:01:27,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-12-09 16:01:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-12-09 16:01:27,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1447, Unknown=1, NotChecked=0, Total=1640 [2018-12-09 16:01:27,279 INFO L87 Difference]: Start difference. First operand 4090 states and 4188 transitions. Second operand 33 states. [2018-12-09 16:01:37,480 WARN L180 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2018-12-09 16:01:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:01:48,367 INFO L93 Difference]: Finished difference Result 10131 states and 10674 transitions. [2018-12-09 16:01:48,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-12-09 16:01:48,367 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1942 [2018-12-09 16:01:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:01:48,377 INFO L225 Difference]: With dead ends: 10131 [2018-12-09 16:01:48,377 INFO L226 Difference]: Without dead ends: 5845 [2018-12-09 16:01:48,384 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4076 GetRequests, 3917 SyntacticMatches, 3 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7789 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=3995, Invalid=20809, Unknown=2, NotChecked=0, Total=24806 [2018-12-09 16:01:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5845 states. [2018-12-09 16:01:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5845 to 4268. [2018-12-09 16:01:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2018-12-09 16:01:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 4341 transitions. [2018-12-09 16:01:48,436 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 4341 transitions. Word has length 1942 [2018-12-09 16:01:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:01:48,437 INFO L480 AbstractCegarLoop]: Abstraction has 4268 states and 4341 transitions. [2018-12-09 16:01:48,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-12-09 16:01:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 4341 transitions. [2018-12-09 16:01:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2201 [2018-12-09 16:01:48,455 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:01:48,455 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-12-09 16:01:48,455 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:01:48,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:01:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1114158568, now seen corresponding path program 1 times [2018-12-09 16:01:48,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:01:48,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:48,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:01:48,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:48,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:01:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:01:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 15194 backedges. 6664 proven. 2405 refuted. 0 times theorem prover too weak. 6125 trivial. 0 not checked. [2018-12-09 16:01:50,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:01:50,406 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:01:50,406 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 2201 with the following transitions: [2018-12-09 16:01:50,406 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [718], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:01:50,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:01:50,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:01:54,162 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:01:54,162 INFO L272 AbstractInterpreter]: Visited 204 different actions 820 times. Merged at 11 different actions 37 times. Widened at 1 different actions 1 times. Performed 9221 root evaluator evaluations with a maximum evaluation depth of 21. Performed 9221 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 22 fixpoints after 13 different actions. Largest state had 24 variables. [2018-12-09 16:01:54,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:01:54,164 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:01:54,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:01:54,164 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/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 [2018-12-09 16:01:54,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:01:54,171 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:01:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:01:54,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:01:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15194 backedges. 5616 proven. 2 refuted. 0 times theorem prover too weak. 9576 trivial. 0 not checked. [2018-12-09 16:01:55,500 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:01:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15194 backedges. 2474 proven. 244 refuted. 0 times theorem prover too weak. 12476 trivial. 0 not checked. [2018-12-09 16:01:56,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:01:56,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-12-09 16:01:56,825 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:01:56,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 16:01:56,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 16:01:56,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-09 16:01:56,827 INFO L87 Difference]: Start difference. First operand 4268 states and 4341 transitions. Second operand 10 states. [2018-12-09 16:01:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:01:57,622 INFO L93 Difference]: Finished difference Result 7974 states and 8106 transitions. [2018-12-09 16:01:57,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 16:01:57,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2200 [2018-12-09 16:01:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:01:57,627 INFO L225 Difference]: With dead ends: 7974 [2018-12-09 16:01:57,628 INFO L226 Difference]: Without dead ends: 3896 [2018-12-09 16:01:57,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4433 GetRequests, 4414 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-12-09 16:01:57,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2018-12-09 16:01:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3894. [2018-12-09 16:01:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2018-12-09 16:01:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 3944 transitions. [2018-12-09 16:01:57,673 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 3944 transitions. Word has length 2200 [2018-12-09 16:01:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:01:57,673 INFO L480 AbstractCegarLoop]: Abstraction has 3894 states and 3944 transitions. [2018-12-09 16:01:57,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 16:01:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 3944 transitions. [2018-12-09 16:01:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2324 [2018-12-09 16:01:57,693 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 16:01:57,694 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 13, 13, 13, 12, 12, 12, 12, 11, 10, 9, 9, 9, 9, 9, 9, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 16:01:57,694 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 16:01:57,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:01:57,694 INFO L82 PathProgramCache]: Analyzing trace with hash 415764510, now seen corresponding path program 1 times [2018-12-09 16:01:57,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 16:01:57,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:57,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:01:57,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 16:01:57,695 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 16:01:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:02:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 6668 proven. 6104 refuted. 0 times theorem prover too weak. 4389 trivial. 0 not checked. [2018-12-09 16:02:03,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:02:03,051 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 16:02:03,051 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 2324 with the following transitions: [2018-12-09 16:02:03,051 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [686], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [718], [719], [723], [726], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [906], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [961], [965], [967], [972], [973], [974], [976], [977] [2018-12-09 16:02:03,053 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 16:02:03,053 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 16:02:07,373 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 16:02:07,373 INFO L272 AbstractInterpreter]: Visited 206 different actions 1046 times. Merged at 13 different actions 59 times. Widened at 1 different actions 3 times. Performed 12207 root evaluator evaluations with a maximum evaluation depth of 21. Performed 12207 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 40 fixpoints after 14 different actions. Largest state had 24 variables. [2018-12-09 16:02:07,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 16:02:07,375 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 16:02:07,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 16:02:07,375 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 16:02:07,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 16:02:07,380 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 16:02:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 16:02:07,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 16:02:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 7301 proven. 2 refuted. 0 times theorem prover too weak. 9858 trivial. 0 not checked. [2018-12-09 16:02:09,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 16:02:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 17161 backedges. 2546 proven. 372 refuted. 0 times theorem prover too weak. 14243 trivial. 0 not checked. [2018-12-09 16:02:11,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 16:02:11,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-12-09 16:02:11,781 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 16:02:11,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 16:02:11,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 16:02:11,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2018-12-09 16:02:11,783 INFO L87 Difference]: Start difference. First operand 3894 states and 3944 transitions. Second operand 20 states. [2018-12-09 16:02:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 16:02:14,914 INFO L93 Difference]: Finished difference Result 5030 states and 5123 transitions. [2018-12-09 16:02:14,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 16:02:14,915 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 2323 [2018-12-09 16:02:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 16:02:14,916 INFO L225 Difference]: With dead ends: 5030 [2018-12-09 16:02:14,916 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 16:02:14,920 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4734 GetRequests, 4674 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=730, Invalid=2930, Unknown=0, NotChecked=0, Total=3660 [2018-12-09 16:02:14,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 16:02:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 16:02:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 16:02:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 16:02:14,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2323 [2018-12-09 16:02:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 16:02:14,920 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 16:02:14,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 16:02:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 16:02:14,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 16:02:14,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 16:02:14,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:14,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:14,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:14,996 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:14,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:14,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:15,982 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,218 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 818 DAG size of output: 701 [2018-12-09 16:02:16,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,940 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:16,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:17,036 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 16:02:17,182 WARN L180 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 798 DAG size of output: 678 [2018-12-09 16:02:18,699 WARN L180 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 404 DAG size of output: 139 [2018-12-09 16:02:24,996 WARN L180 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 695 DAG size of output: 116 [2018-12-09 16:02:28,987 WARN L180 SmtUtils]: Spent 3.98 s on a formula simplification. DAG size of input: 675 DAG size of output: 121 [2018-12-09 16:02:28,988 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:02:28,988 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a12~0 |old(~a12~0)|) (= ~a24~0 |old(~a24~0)|) (= ~a21~0 |old(~a21~0)|) (= |old(~a15~0)| ~a15~0)) [2018-12-09 16:02:28,988 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L432(lines 432 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L366(lines 366 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L235(lines 235 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L169(line 169) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L764(lines 764 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L632(lines 632 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L500(lines 500 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L831(lines 831 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L700(lines 700 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L568(lines 568 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L172(line 172) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L106(line 106) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L305(lines 305 870) no Hoare annotation was computed. [2018-12-09 16:02:28,989 INFO L448 ceAbstractionStarter]: For program point L438(lines 438 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L372(lines 372 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L241(lines 241 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L175(line 175) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L109(line 109) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L638(lines 638 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L506(lines 506 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L837(lines 837 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L771(lines 771 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L573(lines 573 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L706(lines 706 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L178(line 178) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L311(lines 311 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L444(lines 444 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L378(lines 378 870) no Hoare annotation was computed. [2018-12-09 16:02:28,990 INFO L448 ceAbstractionStarter]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L247(lines 247 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L181(line 181) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L115(line 115) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L842(lines 842 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L644(lines 644 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L512(lines 512 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L777(lines 777 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L579(lines 579 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L712(lines 712 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L184(line 184) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L118(line 118) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L449(lines 449 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L317(lines 317 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L384(lines 384 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L252(lines 252 870) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,991 INFO L448 ceAbstractionStarter]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L187(line 187) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L55(line 55) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L848(lines 848 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L650(lines 650 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L518(lines 518 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L783(lines 783 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L585(lines 585 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L718(lines 718 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L454(lines 454 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L190(line 190) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L124(line 124) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L323(lines 323 870) no Hoare annotation was computed. [2018-12-09 16:02:28,992 INFO L444 ceAbstractionStarter]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse25 (= 1 ~a24~0)) (.cse22 (= 7 |old(~a21~0)|)) (.cse26 (= ~a24~0 1)) (.cse17 (= ~a12~0 |old(~a12~0)|)) (.cse18 (= ~a24~0 |old(~a24~0)|)) (.cse19 (= ~a21~0 |old(~a21~0)|)) (.cse0 (= |old(~a15~0)| ~a15~0))) (let ((.cse2 (not (= 5 |old(~a15~0)|))) (.cse11 (and .cse17 .cse18 .cse19 .cse0)) (.cse3 (not (= 6 |old(~a15~0)|))) (.cse23 (<= (+ ~a12~0 43) 0)) (.cse20 (< 0 (+ |old(~a12~0)| 43))) (.cse13 (not (= 10 |old(~a21~0)|))) (.cse9 (not (= 6 |old(~a21~0)|))) (.cse15 (not (= 8 |old(~a15~0)|))) (.cse12 (and .cse17 .cse19 (= 8 ~a15~0) .cse26)) (.cse4 (not (= 9 |old(~a21~0)|))) (.cse14 (< 11 |old(~a12~0)|)) (.cse1 (not .cse22)) (.cse24 (< 7 |old(~a15~0)|)) (.cse6 (and .cse17 .cse19 .cse25 (= 9 ~a15~0))) (.cse5 (not (= 9 |old(~a15~0)|))) (.cse16 (= |calculate_output_#in~input| 0)) (.cse7 (<= |old(~a12~0)| 80)) (.cse21 (not (= |old(~a15~0)| 8))) (.cse10 (not (= 8 |old(~a21~0)|))) (.cse8 (not (= 1 |old(~a24~0)|)))) (and (or (and .cse0 (= 7 ~a21~0)) .cse1 .cse2) (or .cse3 (= 6 ~a15~0)) (or .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse9 (< 80 |old(~a12~0)|) .cse8 (<= ~a12~0 80) .cse2) (or .cse5 (and .cse1 .cse10) .cse8 .cse7 .cse11) (or .cse12 (or .cse13 .cse8 .cse14 .cse15 .cse16)) (or (and .cse17 .cse18 .cse19 (= 5 ~a15~0)) .cse9 .cse20 .cse2) (or .cse18 .cse2 .cse8) (or .cse13 .cse12 .cse8 .cse15 .cse16 .cse7) (or .cse6 .cse10 .cse5 .cse8 .cse14) (or (or (or .cse16 .cse1 .cse14) .cse8) .cse21 .cse12) (or .cse6 .cse5 (or .cse9 .cse8) (< 95434 |old(~a12~0)|) (<= |old(~a12~0)| 95380)) (or (or (= 0 |old(~a21~0)|) (< 76 |old(~a12~0)|) .cse22 .cse16) .cse12 (< |old(~a12~0)| 19) .cse8 .cse21) (or .cse5 (or .cse13 .cse7) .cse11 .cse8) (or .cse23 .cse3 .cse20) (or .cse9 .cse23 .cse8 .cse24 .cse20) (or .cse5 .cse13 .cse8 .cse14 .cse6) (or .cse8 (and .cse18 .cse19 .cse0) .cse24 .cse22) (or .cse12 (< |old(~a12~0)| 286349) (or .cse9 .cse8 .cse15 .cse16)) (or .cse12 (or .cse4 .cse14 .cse16) .cse8 .cse21) (or (< 0 (+ |old(~a12~0)| 460233)) .cse1 .cse8 (and .cse17 .cse19 .cse0 .cse25) .cse24) (or (< 72 |old(~a12~0)|) .cse10 .cse6 .cse5 .cse8 (<= |old(~a12~0)| 18)) (or (and .cse17 (= ~a21~0 8) .cse0 .cse26) .cse16 .cse7 .cse21 .cse10 .cse8 (< 73282 |old(~a12~0)|))))) [2018-12-09 16:02:28,992 INFO L448 ceAbstractionStarter]: For program point L390(lines 390 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L258(lines 258 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L193(line 193) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L127(line 127) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L854(lines 854 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L656(lines 656 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L524(lines 524 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L789(lines 789 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L591(lines 591 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L724(lines 724 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L460(lines 460 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L196(line 196) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L130(line 130) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L329(lines 329 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L396(lines 396 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L264(lines 264 870) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,993 INFO L448 ceAbstractionStarter]: For program point L859(lines 859 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L199(line 199) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L133(line 133) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L67(line 67) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L662(lines 662 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L530(lines 530 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L795(lines 795 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L597(lines 597 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L730(lines 730 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L202(line 202) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L136(line 136) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L467(lines 467 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L335(lines 335 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L269(lines 269 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L402(lines 402 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L865(lines 865 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L139(line 139) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L668(lines 668 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L536(lines 536 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L801(lines 801 870) no Hoare annotation was computed. [2018-12-09 16:02:28,994 INFO L448 ceAbstractionStarter]: For program point L735(lines 735 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L603(lines 603 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L472(lines 472 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L76(line 76) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L341(lines 341 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L275(lines 275 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L408(lines 408 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L541(lines 541 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L211(lines 211 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L145(line 145) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L674(lines 674 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L807(lines 807 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L741(lines 741 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L609(lines 609 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L478(lines 478 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L280(lines 280 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L148(line 148) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L677(lines 677 870) no Hoare annotation was computed. [2018-12-09 16:02:28,995 INFO L448 ceAbstractionStarter]: For program point L347(lines 347 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L414(lines 414 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L547(lines 547 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L217(lines 217 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L151(line 151) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L747(lines 747 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L615(lines 615 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L814(lines 814 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L484(lines 484 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L286(lines 286 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L683(lines 683 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L353(lines 353 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L552(lines 552 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L420(lines 420 870) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,996 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L223(lines 223 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L157(line 157) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L752(lines 752 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L819(lines 819 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L621(lines 621 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L555(lines 555 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L688(lines 688 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L490(lines 490 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L160(line 160) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L94(line 94) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L359(lines 359 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L293(lines 293 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L426(lines 426 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L229(lines 229 870) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L163(line 163) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L97(line 97) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-12-09 16:02:28,997 INFO L448 ceAbstractionStarter]: For program point L758(lines 758 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L626(lines 626 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L825(lines 825 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L561(lines 561 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L495(lines 495 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L694(lines 694 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L166(line 166) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L100(line 100) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point L299(lines 299 870) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 8 ~a15~0) (= (+ ~a12~0 49) 0) (= ~a24~0 1) (= ~a21~0 7)) [2018-12-09 16:02:28,998 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 8 |old(~a15~0)|)) (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (not (= 0 (+ |old(~a12~0)| 49))) (and (= (+ ~a12~0 49) 0) (= 7 ~a21~0) (= |old(~a15~0)| ~a15~0) (= ~a24~0 1))) [2018-12-09 16:02:28,998 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2018-12-09 16:02:28,998 INFO L444 ceAbstractionStarter]: At program point L888(line 888) the Hoare annotation is: (let ((.cse8 (= 7 ~a21~0)) (.cse19 (not (= 1 |old(~a24~0)|))) (.cse2 (= 9 ~a21~0))) (let ((.cse1 (= 1 ~a24~0)) (.cse20 (not .cse2)) (.cse21 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse19)) (.cse22 (not (= ~a21~0 0))) (.cse17 (not .cse8)) (.cse9 (not (= main_~input~0 0))) (.cse23 (= ~a15~0 8)) (.cse24 (= ~a24~0 1))) (let ((.cse6 (and .cse22 .cse17 .cse9 .cse23 .cse24)) (.cse0 (= 5 ~a15~0)) (.cse11 (= 8 ~a15~0)) (.cse18 (<= ~a15~0 7)) (.cse13 (= ~a24~0 |old(~a24~0)|)) (.cse16 (= ~a21~0 6)) (.cse14 (= 8 ~a21~0)) (.cse7 (<= 19 ~a12~0)) (.cse5 (and .cse20 .cse22 .cse17 .cse9 .cse23 .cse24 .cse21)) (.cse10 (<= ~a12~0 11)) (.cse12 (= ~a21~0 10)) (.cse15 (and .cse20 .cse17 .cse1 .cse21)) (.cse3 (< 80 ~a12~0)) (.cse4 (= 9 ~a15~0))) (or (and .cse0 (= 6 ~a21~0) (<= (+ ~a12~0 43) 0)) (not (= 8 |old(~a15~0)|)) (and .cse1 .cse2 .cse3 .cse4) (and (and (<= ~a12~0 73282) (and .cse5 (= ~a21~0 8))) .cse3) (and (and (<= ~a12~0 76) .cse6) .cse7) (= 6 ~a15~0) (and (and (and (and .cse8 .cse9) .cse10) .cse11) .cse1) (and (and .cse10 .cse12) .cse13 .cse4) (and .cse2 .cse10 .cse6) (and (or (and .cse1 .cse8) (and .cse14 .cse15)) .cse3 .cse4) (not (= 7 |old(~a21~0)|)) (not (= 0 (+ |old(~a12~0)| 49))) (and .cse8 .cse0) (and (and (and .cse15 .cse10) .cse14) .cse4) (and (<= 286349 ~a12~0) (and (and (and .cse16 .cse9) .cse11) .cse1)) (and .cse17 .cse1 .cse18) (and (<= (+ ~a12~0 460233) 0) .cse1 .cse18) (and .cse13 .cse4 (and (<= ~a12~0 95434) .cse16 (< 95380 ~a12~0))) (and (and (and .cse14 .cse15 (<= ~a12~0 72)) .cse7) .cse4) .cse19 (and .cse3 (and .cse5 .cse12)) (and (and .cse5 .cse10) .cse12) (and (and .cse12 .cse15 .cse3) .cse4))))) [2018-12-09 16:02:28,999 INFO L448 ceAbstractionStarter]: For program point L888-1(line 888) no Hoare annotation was computed. [2018-12-09 16:02:28,999 INFO L448 ceAbstractionStarter]: For program point L885(line 885) no Hoare annotation was computed. [2018-12-09 16:02:28,999 INFO L444 ceAbstractionStarter]: At program point L880-2(lines 880 889) the Hoare annotation is: (let ((.cse20 (not (= 1 |old(~a24~0)|))) (.cse13 (= 7 ~a21~0)) (.cse5 (= 9 ~a21~0))) (let ((.cse4 (= 1 ~a24~0)) (.cse21 (not .cse5)) (.cse8 (not (= ~a21~0 0))) (.cse9 (not .cse13)) (.cse10 (= ~a15~0 8)) (.cse11 (= ~a24~0 1)) (.cse22 (or (not (= 6 |old(~a21~0)|)) (not (= 5 |old(~a15~0)|)) .cse20))) (let ((.cse15 (= 8 ~a15~0)) (.cse3 (= 5 ~a15~0)) (.cse2 (<= ~a12~0 11)) (.cse19 (<= ~a15~0 7)) (.cse14 (= ~a24~0 |old(~a24~0)|)) (.cse16 (= ~a21~0 6)) (.cse17 (= 8 ~a21~0)) (.cse12 (<= 19 ~a12~0)) (.cse1 (and .cse21 .cse8 .cse9 .cse10 .cse11 .cse22)) (.cse0 (= ~a21~0 10)) (.cse18 (and .cse21 .cse9 .cse4 .cse22)) (.cse6 (< 80 ~a12~0)) (.cse7 (= 9 ~a15~0))) (or (and .cse0 (and .cse1 .cse2)) (and .cse3 (= 6 ~a21~0) (<= (+ ~a12~0 43) 0)) (not (= 8 |old(~a15~0)|)) (and .cse4 .cse5 .cse6 .cse7) (and (and (<= ~a12~0 76) (and .cse8 .cse9 .cse10 .cse11)) .cse12) (and (and .cse13 .cse2) .cse14 (= |old(~a15~0)| ~a15~0)) (and .cse15 .cse5 .cse14 .cse2) (and (<= 286349 ~a12~0) (and (and .cse16 .cse14) .cse15)) (= 6 ~a15~0) (and (and .cse2 .cse0) .cse14 .cse7) (and (or (and .cse4 .cse13) (and .cse17 .cse18)) .cse6 .cse7) (not (= 7 |old(~a21~0)|)) (not (= 0 (+ |old(~a12~0)| 49))) (and .cse13 .cse3) (and (and (and .cse18 .cse2) .cse17) .cse7) (and .cse6 (and (<= ~a12~0 73282) (and .cse1 (= ~a21~0 8)))) (and .cse9 .cse4 .cse19) (and (<= (+ ~a12~0 460233) 0) .cse4 .cse19) (and .cse14 .cse7 (and (<= ~a12~0 95434) .cse16 (< 95380 ~a12~0))) (and (and (and .cse17 .cse18 (<= ~a12~0 72)) .cse12) .cse7) .cse20 (and .cse6 (and .cse1 .cse0)) (and (and .cse0 .cse18 .cse6) .cse7))))) [2018-12-09 16:02:28,999 INFO L448 ceAbstractionStarter]: For program point L880-3(lines 874 890) no Hoare annotation was computed. [2018-12-09 16:02:29,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:02:29 BoogieIcfgContainer [2018-12-09 16:02:29,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 16:02:29,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 16:02:29,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 16:02:29,010 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 16:02:29,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:58:22" (3/4) ... [2018-12-09 16:02:29,013 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 16:02:29,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 16:02:29,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure calculate_output [2018-12-09 16:02:29,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 16:02:29,025 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-09 16:02:29,026 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 16:02:29,043 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((a21 == 10 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) || ((5 == a15 && 6 == a21) && a12 + 43 <= 0)) || !(8 == \old(a15))) || (((1 == a24 && 9 == a21) && 80 < a12) && 9 == a15)) || ((a12 <= 76 && ((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && 19 <= a12)) || (((7 == a21 && a12 <= 11) && a24 == \old(a24)) && \old(a15) == a15)) || (((8 == a15 && 9 == a21) && a24 == \old(a24)) && a12 <= 11)) || (286349 <= a12 && (a21 == 6 && a24 == \old(a24)) && 8 == a15)) || 6 == a15) || (((a12 <= 11 && a21 == 10) && a24 == \old(a24)) && 9 == a15)) || ((((1 == a24 && 7 == a21) || (8 == a21 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24))))) && 80 < a12) && 9 == a15)) || !(7 == \old(a21))) || !(0 == \old(a12) + 49)) || (7 == a21 && 5 == a15)) || ((((((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) && 8 == a21) && 9 == a15)) || (80 < a12 && a12 <= 73282 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 8)) || ((!(7 == a21) && 1 == a24) && a15 <= 7)) || ((a12 + 460233 <= 0 && 1 == a24) && a15 <= 7)) || ((a24 == \old(a24) && 9 == a15) && (a12 <= 95434 && a21 == 6) && 95380 < a12)) || ((((8 == a21 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 72) && 19 <= a12) && 9 == a15)) || !(1 == \old(a24))) || (80 < a12 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 10)) || (((a21 == 10 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 80 < a12) && 9 == a15) [2018-12-09 16:02:29,109 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e117a4cb-f141-4fc9-8598-9036e022e189/bin-2019/utaipan/witness.graphml [2018-12-09 16:02:29,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 16:02:29,110 INFO L168 Benchmark]: Toolchain (without parser) took 247702.21 ms. Allocated memory was 1.0 GB in the beginning and 5.1 GB in the end (delta: 4.0 GB). Free memory was 951.7 MB in the beginning and 2.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.6 GB. Max. memory is 11.5 GB. [2018-12-09 16:02:29,111 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:02:29,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:02:29,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.95 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. [2018-12-09 16:02:29,111 INFO L168 Benchmark]: Boogie Preprocessor took 54.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 16:02:29,111 INFO L168 Benchmark]: RCFGBuilder took 724.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 126.0 MB). Peak memory consumption was 126.0 MB. Max. memory is 11.5 GB. [2018-12-09 16:02:29,112 INFO L168 Benchmark]: TraceAbstraction took 246425.77 ms. Allocated memory was 1.2 GB in the beginning and 5.1 GB in the end (delta: 3.9 GB). Free memory was 1.0 GB in the beginning and 2.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. [2018-12-09 16:02:29,112 INFO L168 Benchmark]: Witness Printer took 99.02 ms. Allocated memory is still 5.1 GB. Free memory was 2.5 GB in the beginning and 2.4 GB in the end (delta: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 11.5 GB. [2018-12-09 16:02:29,113 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.95 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 54.60 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 724.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 126.0 MB). Peak memory consumption was 126.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 246425.77 ms. Allocated memory was 1.2 GB in the beginning and 5.1 GB in the end (delta: 3.9 GB). Free memory was 1.0 GB in the beginning and 2.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 4.3 GB. Max. memory is 11.5 GB. * Witness Printer took 99.02 ms. Allocated memory is still 5.1 GB. Free memory was 2.5 GB in the beginning and 2.4 GB in the end (delta: 82.5 MB). Peak memory consumption was 82.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 112]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 880]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((a21 == 10 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) || ((5 == a15 && 6 == a21) && a12 + 43 <= 0)) || !(8 == \old(a15))) || (((1 == a24 && 9 == a21) && 80 < a12) && 9 == a15)) || ((a12 <= 76 && ((!(a21 == 0) && !(7 == a21)) && a15 == 8) && a24 == 1) && 19 <= a12)) || (((7 == a21 && a12 <= 11) && a24 == \old(a24)) && \old(a15) == a15)) || (((8 == a15 && 9 == a21) && a24 == \old(a24)) && a12 <= 11)) || (286349 <= a12 && (a21 == 6 && a24 == \old(a24)) && 8 == a15)) || 6 == a15) || (((a12 <= 11 && a21 == 10) && a24 == \old(a24)) && 9 == a15)) || ((((1 == a24 && 7 == a21) || (8 == a21 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24))))) && 80 < a12) && 9 == a15)) || !(7 == \old(a21))) || !(0 == \old(a12) + 49)) || (7 == a21 && 5 == a15)) || ((((((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 11) && 8 == a21) && 9 == a15)) || (80 < a12 && a12 <= 73282 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 8)) || ((!(7 == a21) && 1 == a24) && a15 <= 7)) || ((a12 + 460233 <= 0 && 1 == a24) && a15 <= 7)) || ((a24 == \old(a24) && 9 == a15) && (a12 <= 95434 && a21 == 6) && 95380 < a12)) || ((((8 == a21 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a12 <= 72) && 19 <= a12) && 9 == a15)) || !(1 == \old(a24))) || (80 < a12 && (((((!(9 == a21) && !(a21 == 0)) && !(7 == a21)) && a15 == 8) && a24 == 1) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && a21 == 10)) || (((a21 == 10 && ((!(9 == a21) && !(7 == a21)) && 1 == a24) && ((!(6 == \old(a21)) || !(5 == \old(a15))) || !(1 == \old(a24)))) && 80 < a12) && 9 == a15) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 1 error locations. SAFE Result, 246.3s OverallTime, 20 OverallIterations, 19 TraceHistogramMax, 129.4s AutomataDifference, 0.0s DeadEndRemovalTime, 14.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1486 SDtfs, 52738 SDslu, 4066 SDs, 0 SdLazy, 71250 SolverSat, 8504 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 91.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 33546 GetRequests, 32703 SyntacticMatches, 25 SemanticMatches, 818 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21748 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4268occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 53.1s AbstIntTime, 17 AbstIntIterations, 4 AbstIntStrong, 0.997245757025407 AbsIntWeakeningRatio, 0.09071580439404678 AbsIntAvgWeakeningVarsNumRemoved, 16.20340184266478 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 20 MinimizatonAttempts, 5325 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 360 PreInvPairs, 472 NumberOfFragments, 1662 HoareAnnotationTreeSize, 360 FomulaSimplifications, 59674831 FormulaSimplificationTreeSizeReduction, 2.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 9294930 FormulaSimplificationTreeSizeReductionInter, 11.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 32803 NumberOfCodeBlocks, 32803 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 48299 ConstructedInterpolants, 256 QuantifiedInterpolants, 261959032 SizeOfPredicates, 21 NumberOfNonLiveVariables, 21567 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 46 InterpolantComputations, 3 PerfectInterpolantSequences, 193303/224280 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...