./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product29_false-unreach-call_true-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product29_false-unreach-call_true-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/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 3e3582d50885fab3954063dbc23f7eb9af27e1f8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished with exit code -9 Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 04:37:42,033 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:37:42,034 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:37:42,041 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:37:42,041 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:37:42,042 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:37:42,043 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:37:42,044 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:37:42,045 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:37:42,045 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:37:42,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:37:42,046 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:37:42,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:37:42,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:37:42,048 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:37:42,049 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:37:42,049 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:37:42,051 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:37:42,052 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:37:42,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:37:42,054 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:37:42,055 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:37:42,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:37:42,056 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:37:42,057 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:37:42,057 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:37:42,058 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:37:42,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:37:42,059 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:37:42,060 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:37:42,060 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:37:42,060 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:37:42,060 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:37:42,060 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:37:42,061 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:37:42,061 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:37:42,061 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 04:37:42,068 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:37:42,068 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:37:42,069 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:37:42,069 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:37:42,069 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 04:37:42,069 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 04:37:42,069 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 04:37:42,069 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 04:37:42,069 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 04:37:42,070 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 04:37:42,070 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 04:37:42,070 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 04:37:42,070 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 04:37:42,071 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:37:42,071 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:37:42,072 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:37:42,072 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:37:42,072 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:37:42,072 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:37:42,072 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:37:42,072 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:37:42,073 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:37:42,073 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 04:37:42,074 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:37:42,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:37:42,074 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 04:37:42,074 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_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/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 -> 3e3582d50885fab3954063dbc23f7eb9af27e1f8 [2018-11-23 04:37:42,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:37:42,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:37:42,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:37:42,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:37:42,110 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:37:42,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/email_spec3_product29_false-unreach-call_true-termination.cil.c [2018-11-23 04:37:42,145 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/data/b41243b2c/afbb588cd2f14aaf9f598692e708b125/FLAGd07324d63 [2018-11-23 04:37:42,517 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:37:42,517 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/sv-benchmarks/c/product-lines/email_spec3_product29_false-unreach-call_true-termination.cil.c [2018-11-23 04:37:42,531 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/data/b41243b2c/afbb588cd2f14aaf9f598692e708b125/FLAGd07324d63 [2018-11-23 04:37:42,540 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/data/b41243b2c/afbb588cd2f14aaf9f598692e708b125 [2018-11-23 04:37:42,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:37:42,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:37:42,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:37:42,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:37:42,545 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:37:42,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:37:42" (1/1) ... [2018-11-23 04:37:42,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76880c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:42, skipping insertion in model container [2018-11-23 04:37:42,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:37:42" (1/1) ... [2018-11-23 04:37:42,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:37:42,597 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:37:42,972 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:37:42,979 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:37:43,061 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:37:43,116 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:37:43,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43 WrapperNode [2018-11-23 04:37:43,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:37:43,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:37:43,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:37:43,117 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:37:43,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:37:43,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:37:43,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:37:43,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:37:43,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... [2018-11-23 04:37:43,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:37:43,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:37:43,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:37:43,220 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:37:43,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cafd1bd-3a2a-49f3-b378-f6a58ba47bef/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:37:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2018-11-23 04:37:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2018-11-23 04:37:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2018-11-23 04:37:43,269 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2018-11-23 04:37:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2018-11-23 04:37:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2018-11-23 04:37:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2018-11-23 04:37:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2018-11-23 04:37:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2018-11-23 04:37:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2018-11-23 04:37:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2018-11-23 04:37:43,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2018-11-23 04:37:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 04:37:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2018-11-23 04:37:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2018-11-23 04:37:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2018-11-23 04:37:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2018-11-23 04:37:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2018-11-23 04:37:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2018-11-23 04:37:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-11-23 04:37:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-11-23 04:37:43,271 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2018-11-23 04:37:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2018-11-23 04:37:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2018-11-23 04:37:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2018-11-23 04:37:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2018-11-23 04:37:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2018-11-23 04:37:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2018-11-23 04:37:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2018-11-23 04:37:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2018-11-23 04:37:43,272 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2018-11-23 04:37:43,272 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2018-11-23 04:37:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2018-11-23 04:37:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2018-11-23 04:37:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2018-11-23 04:37:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2018-11-23 04:37:43,273 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2018-11-23 04:37:43,273 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2018-11-23 04:37:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2018-11-23 04:37:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2018-11-23 04:37:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2018-11-23 04:37:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2018-11-23 04:37:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2018-11-23 04:37:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2018-11-23 04:37:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2018-11-23 04:37:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2018-11-23 04:37:43,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2018-11-23 04:37:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2018-11-23 04:37:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2018-11-23 04:37:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2018-11-23 04:37:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2018-11-23 04:37:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2018-11-23 04:37:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2018-11-23 04:37:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2018-11-23 04:37:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2018-11-23 04:37:43,278 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2018-11-23 04:37:43,278 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2018-11-23 04:37:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2018-11-23 04:37:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2018-11-23 04:37:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2018-11-23 04:37:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2018-11-23 04:37:43,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2018-11-23 04:37:43,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:37:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2018-11-23 04:37:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2018-11-23 04:37:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2018-11-23 04:37:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2018-11-23 04:37:43,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2018-11-23 04:37:43,280 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2018-11-23 04:37:43,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2018-11-23 04:37:43,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:37:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2018-11-23 04:37:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2018-11-23 04:37:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2018-11-23 04:37:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-11-23 04:37:43,282 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2018-11-23 04:37:43,282 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2018-11-23 04:37:43,283 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-11-23 04:37:43,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2018-11-23 04:37:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2018-11-23 04:37:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-11-23 04:37:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2018-11-23 04:37:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2018-11-23 04:37:43,284 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2018-11-23 04:37:43,284 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2018-11-23 04:37:43,285 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2018-11-23 04:37:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2018-11-23 04:37:43,285 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2018-11-23 04:37:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2018-11-23 04:37:43,285 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2018-11-23 04:37:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2018-11-23 04:37:43,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2018-11-23 04:37:43,285 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2018-11-23 04:37:43,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2018-11-23 04:37:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2018-11-23 04:37:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2018-11-23 04:37:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2018-11-23 04:37:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2018-11-23 04:37:43,290 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2018-11-23 04:37:43,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-11-23 04:37:43,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:37:43,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:37:44,361 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:37:44,362 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 04:37:44,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:37:44 BoogieIcfgContainer [2018-11-23 04:37:44,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:37:44,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:37:44,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:37:44,365 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:37:44,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:37:42" (1/3) ... [2018-11-23 04:37:44,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a2bf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:37:44, skipping insertion in model container [2018-11-23 04:37:44,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:37:43" (2/3) ... [2018-11-23 04:37:44,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a2bf41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:37:44, skipping insertion in model container [2018-11-23 04:37:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:37:44" (3/3) ... [2018-11-23 04:37:44,369 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product29_false-unreach-call_true-termination.cil.c [2018-11-23 04:37:44,375 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:37:44,381 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:37:44,391 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:37:44,417 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:37:44,418 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:37:44,418 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:37:44,418 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:37:44,418 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:37:44,418 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:37:44,418 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:37:44,418 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:37:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states. [2018-11-23 04:37:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-23 04:37:44,458 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:37:44,459 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:37:44,461 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:37:44,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:37:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash -35255590, now seen corresponding path program 1 times [2018-11-23 04:37:44,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:37:44,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:44,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:37:44,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:44,497 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:37:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:37:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-23 04:37:44,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:37:44,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 04:37:44,810 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:37:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 04:37:44,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 04:37:44,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:37:44,829 INFO L87 Difference]: Start difference. First operand 568 states. Second operand 2 states. [2018-11-23 04:37:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:37:44,880 INFO L93 Difference]: Finished difference Result 869 states and 1190 transitions. [2018-11-23 04:37:44,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 04:37:44,881 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2018-11-23 04:37:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:37:44,898 INFO L225 Difference]: With dead ends: 869 [2018-11-23 04:37:44,898 INFO L226 Difference]: Without dead ends: 557 [2018-11-23 04:37:44,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 04:37:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2018-11-23 04:37:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2018-11-23 04:37:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2018-11-23 04:37:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 764 transitions. [2018-11-23 04:37:44,975 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 764 transitions. Word has length 204 [2018-11-23 04:37:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:37:44,977 INFO L480 AbstractCegarLoop]: Abstraction has 557 states and 764 transitions. [2018-11-23 04:37:44,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 04:37:44,978 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 764 transitions. [2018-11-23 04:37:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-23 04:37:44,984 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:37:44,984 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:37:44,984 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:37:44,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:37:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash -583736480, now seen corresponding path program 1 times [2018-11-23 04:37:44,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:37:44,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:44,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:37:44,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:44,988 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:37:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:37:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-23 04:37:45,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:37:45,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:37:45,161 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:37:45,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:37:45,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:37:45,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:37:45,163 INFO L87 Difference]: Start difference. First operand 557 states and 764 transitions. Second operand 3 states. [2018-11-23 04:37:45,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:37:45,209 INFO L93 Difference]: Finished difference Result 852 states and 1150 transitions. [2018-11-23 04:37:45,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:37:45,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-11-23 04:37:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:37:45,214 INFO L225 Difference]: With dead ends: 852 [2018-11-23 04:37:45,214 INFO L226 Difference]: Without dead ends: 560 [2018-11-23 04:37:45,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:37:45,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-11-23 04:37:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 559. [2018-11-23 04:37:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2018-11-23 04:37:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 766 transitions. [2018-11-23 04:37:45,245 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 766 transitions. Word has length 205 [2018-11-23 04:37:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:37:45,245 INFO L480 AbstractCegarLoop]: Abstraction has 559 states and 766 transitions. [2018-11-23 04:37:45,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:37:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 766 transitions. [2018-11-23 04:37:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-23 04:37:45,250 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:37:45,250 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:37:45,251 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:37:45,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:37:45,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1093052140, now seen corresponding path program 1 times [2018-11-23 04:37:45,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:37:45,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:45,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:37:45,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:45,252 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:37:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:37:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-23 04:37:45,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:37:45,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:37:45,377 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:37:45,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:37:45,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:37:45,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:37:45,380 INFO L87 Difference]: Start difference. First operand 559 states and 766 transitions. Second operand 3 states. [2018-11-23 04:37:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:37:45,442 INFO L93 Difference]: Finished difference Result 1094 states and 1530 transitions. [2018-11-23 04:37:45,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:37:45,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-11-23 04:37:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:37:45,447 INFO L225 Difference]: With dead ends: 1094 [2018-11-23 04:37:45,448 INFO L226 Difference]: Without dead ends: 600 [2018-11-23 04:37:45,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:37:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2018-11-23 04:37:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 599. [2018-11-23 04:37:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-11-23 04:37:45,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 835 transitions. [2018-11-23 04:37:45,472 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 835 transitions. Word has length 211 [2018-11-23 04:37:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:37:45,473 INFO L480 AbstractCegarLoop]: Abstraction has 599 states and 835 transitions. [2018-11-23 04:37:45,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:37:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 835 transitions. [2018-11-23 04:37:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-23 04:37:45,477 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:37:45,477 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:37:45,477 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:37:45,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:37:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1164628944, now seen corresponding path program 1 times [2018-11-23 04:37:45,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:37:45,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:45,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:37:45,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:37:45,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:37:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:37:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 04:37:45,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:37:45,803 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:37:45,804 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-23 04:37:45,805 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:37:45,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:37:45,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:37:46,941 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:37:46,942 INFO L272 AbstractInterpreter]: Visited 44 different actions 46 times. Never merged. Never widened. Performed 5609 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5609 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 397 variables. [2018-11-23 04:37:46,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:37:46,954 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:37:47,395 INFO L227 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 95.86% of their original sizes. [2018-11-23 04:37:47,395 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:37:47,563 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-23 04:37:47,563 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:37:47,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:37:47,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [19] total 36 [2018-11-23 04:37:47,564 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:37:47,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-23 04:37:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-23 04:37:47,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2018-11-23 04:37:47,565 INFO L87 Difference]: Start difference. First operand 599 states and 835 transitions. Second operand 19 states. [2018-11-23 04:38:00,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:38:00,191 INFO L93 Difference]: Finished difference Result 1720 states and 2449 transitions. [2018-11-23 04:38:00,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-23 04:38:00,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 212 [2018-11-23 04:38:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:38:00,194 INFO L225 Difference]: With dead ends: 1720 [2018-11-23 04:38:00,195 INFO L226 Difference]: Without dead ends: 1146 [2018-11-23 04:38:00,196 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2018-11-23 04:38:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2018-11-23 04:38:00,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 854. [2018-11-23 04:38:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2018-11-23 04:38:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1245 transitions. [2018-11-23 04:38:00,229 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1245 transitions. Word has length 212 [2018-11-23 04:38:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:38:00,230 INFO L480 AbstractCegarLoop]: Abstraction has 854 states and 1245 transitions. [2018-11-23 04:38:00,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-23 04:38:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1245 transitions. [2018-11-23 04:38:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-23 04:38:00,233 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:38:00,233 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:38:00,234 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:38:00,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash 872832042, now seen corresponding path program 1 times [2018-11-23 04:38:00,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:38:00,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:00,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:38:00,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:00,235 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:38:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:38:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 04:38:00,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:38:00,464 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:38:00,464 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-11-23 04:38:00,465 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:38:00,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:38:00,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:38:01,019 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:38:01,020 INFO L272 AbstractInterpreter]: Visited 50 different actions 56 times. Never merged. Never widened. Performed 6017 root evaluator evaluations with a maximum evaluation depth of 3. Performed 6017 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 397 variables. [2018-11-23 04:38:01,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:01,021 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:38:01,453 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 95.9% of their original sizes. [2018-11-23 04:38:01,453 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:38:01,631 INFO L415 sIntCurrentIteration]: We unified 212 AI predicates to 212 [2018-11-23 04:38:01,631 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:38:01,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:38:01,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [19] total 38 [2018-11-23 04:38:01,632 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:38:01,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-23 04:38:01,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-23 04:38:01,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-11-23 04:38:01,632 INFO L87 Difference]: Start difference. First operand 854 states and 1245 transitions. Second operand 21 states. [2018-11-23 04:38:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:38:15,534 INFO L93 Difference]: Finished difference Result 1953 states and 2830 transitions. [2018-11-23 04:38:15,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-23 04:38:15,534 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 213 [2018-11-23 04:38:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:38:15,539 INFO L225 Difference]: With dead ends: 1953 [2018-11-23 04:38:15,539 INFO L226 Difference]: Without dead ends: 1151 [2018-11-23 04:38:15,542 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2018-11-23 04:38:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2018-11-23 04:38:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 859. [2018-11-23 04:38:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2018-11-23 04:38:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1249 transitions. [2018-11-23 04:38:15,586 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1249 transitions. Word has length 213 [2018-11-23 04:38:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:38:15,587 INFO L480 AbstractCegarLoop]: Abstraction has 859 states and 1249 transitions. [2018-11-23 04:38:15,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-23 04:38:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1249 transitions. [2018-11-23 04:38:15,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-23 04:38:15,592 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:38:15,592 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:38:15,592 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:38:15,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1182363088, now seen corresponding path program 1 times [2018-11-23 04:38:15,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:38:15,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:15,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:38:15,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:15,594 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:38:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:38:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-23 04:38:15,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:38:15,860 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:38:15,860 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-11-23 04:38:15,860 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:38:15,863 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:38:15,863 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:38:16,463 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:38:16,463 INFO L272 AbstractInterpreter]: Visited 61 different actions 73 times. Never merged. Never widened. Performed 7218 root evaluator evaluations with a maximum evaluation depth of 3. Performed 7218 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 397 variables. [2018-11-23 04:38:16,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:16,466 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:38:16,785 INFO L227 lantSequenceWeakener]: Weakened 65 states. On average, predicates are now at 96.01% of their original sizes. [2018-11-23 04:38:16,785 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:38:17,046 INFO L415 sIntCurrentIteration]: We unified 213 AI predicates to 213 [2018-11-23 04:38:17,046 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:38:17,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:38:17,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [19] total 45 [2018-11-23 04:38:17,046 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:38:17,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-23 04:38:17,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-23 04:38:17,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2018-11-23 04:38:17,047 INFO L87 Difference]: Start difference. First operand 859 states and 1249 transitions. Second operand 28 states. [2018-11-23 04:38:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:38:36,669 INFO L93 Difference]: Finished difference Result 1941 states and 2812 transitions. [2018-11-23 04:38:36,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-23 04:38:36,670 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 214 [2018-11-23 04:38:36,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:38:36,674 INFO L225 Difference]: With dead ends: 1941 [2018-11-23 04:38:36,674 INFO L226 Difference]: Without dead ends: 1151 [2018-11-23 04:38:36,676 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=2018, Unknown=0, NotChecked=0, Total=2256 [2018-11-23 04:38:36,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2018-11-23 04:38:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 859. [2018-11-23 04:38:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2018-11-23 04:38:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1246 transitions. [2018-11-23 04:38:36,711 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1246 transitions. Word has length 214 [2018-11-23 04:38:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:38:36,711 INFO L480 AbstractCegarLoop]: Abstraction has 859 states and 1246 transitions. [2018-11-23 04:38:36,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-23 04:38:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1246 transitions. [2018-11-23 04:38:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-23 04:38:36,715 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:38:36,715 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:38:36,715 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:38:36,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1510891061, now seen corresponding path program 1 times [2018-11-23 04:38:36,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:38:36,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:36,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:38:36,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:36,716 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:38:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:38:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-11-23 04:38:36,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:38:36,975 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:38:36,975 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-23 04:38:36,976 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:38:36,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:38:36,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:38:37,791 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:38:37,791 INFO L272 AbstractInterpreter]: Visited 67 different actions 85 times. Never merged. Never widened. Performed 7631 root evaluator evaluations with a maximum evaluation depth of 3. Performed 7631 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 397 variables. [2018-11-23 04:38:37,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:37,797 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:38:38,135 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 95.91% of their original sizes. [2018-11-23 04:38:38,135 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:38:38,460 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-23 04:38:38,461 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:38:38,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:38:38,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [33] imperfect sequences [19] total 50 [2018-11-23 04:38:38,461 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:38:38,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-23 04:38:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-23 04:38:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2018-11-23 04:38:38,462 INFO L87 Difference]: Start difference. First operand 859 states and 1246 transitions. Second operand 33 states. [2018-11-23 04:38:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:38:59,823 INFO L93 Difference]: Finished difference Result 1942 states and 2812 transitions. [2018-11-23 04:38:59,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-23 04:38:59,823 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 216 [2018-11-23 04:38:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:38:59,827 INFO L225 Difference]: With dead ends: 1942 [2018-11-23 04:38:59,827 INFO L226 Difference]: Without dead ends: 1157 [2018-11-23 04:38:59,829 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=356, Invalid=2950, Unknown=0, NotChecked=0, Total=3306 [2018-11-23 04:38:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-11-23 04:38:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 623. [2018-11-23 04:38:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-11-23 04:38:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 851 transitions. [2018-11-23 04:38:59,855 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 851 transitions. Word has length 216 [2018-11-23 04:38:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:38:59,855 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 851 transitions. [2018-11-23 04:38:59,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-23 04:38:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 851 transitions. [2018-11-23 04:38:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-23 04:38:59,857 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:38:59,858 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:38:59,858 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:38:59,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:38:59,858 INFO L82 PathProgramCache]: Analyzing trace with hash -506019952, now seen corresponding path program 1 times [2018-11-23 04:38:59,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:38:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:59,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:38:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:38:59,859 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:38:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-23 04:39:00,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:39:00,089 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:39:00,090 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-23 04:39:00,090 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [946], [949], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:39:00,092 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:39:00,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:39:00,848 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:39:00,848 INFO L272 AbstractInterpreter]: Visited 85 different actions 112 times. Merged at 6 different actions 6 times. Never widened. Performed 8126 root evaluator evaluations with a maximum evaluation depth of 3. Performed 8126 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 413 variables. [2018-11-23 04:39:00,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:00,866 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:39:01,722 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 95.91% of their original sizes. [2018-11-23 04:39:01,722 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:39:02,280 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-23 04:39:02,280 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:39:02,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:39:02,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [40] imperfect sequences [19] total 57 [2018-11-23 04:39:02,280 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:02,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-23 04:39:02,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-23 04:39:02,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2018-11-23 04:39:02,281 INFO L87 Difference]: Start difference. First operand 623 states and 851 transitions. Second operand 40 states. [2018-11-23 04:39:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:39:44,230 INFO L93 Difference]: Finished difference Result 2072 states and 2981 transitions. [2018-11-23 04:39:44,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 04:39:44,230 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 218 [2018-11-23 04:39:44,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:39:44,234 INFO L225 Difference]: With dead ends: 2072 [2018-11-23 04:39:44,235 INFO L226 Difference]: Without dead ends: 1780 [2018-11-23 04:39:44,236 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=532, Invalid=4580, Unknown=0, NotChecked=0, Total=5112 [2018-11-23 04:39:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2018-11-23 04:39:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1152. [2018-11-23 04:39:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-11-23 04:39:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1745 transitions. [2018-11-23 04:39:44,284 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1745 transitions. Word has length 218 [2018-11-23 04:39:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:39:44,284 INFO L480 AbstractCegarLoop]: Abstraction has 1152 states and 1745 transitions. [2018-11-23 04:39:44,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-23 04:39:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1745 transitions. [2018-11-23 04:39:44,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-23 04:39:44,287 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:39:44,287 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:39:44,287 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:39:44,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2132817395, now seen corresponding path program 1 times [2018-11-23 04:39:44,288 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:39:44,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:39:44,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,289 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:39:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:39:44,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:39:44,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:39:44,370 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:44,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:39:44,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:39:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,370 INFO L87 Difference]: Start difference. First operand 1152 states and 1745 transitions. Second operand 3 states. [2018-11-23 04:39:44,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:39:44,420 INFO L93 Difference]: Finished difference Result 2496 states and 3920 transitions. [2018-11-23 04:39:44,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:39:44,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-11-23 04:39:44,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:39:44,425 INFO L225 Difference]: With dead ends: 2496 [2018-11-23 04:39:44,425 INFO L226 Difference]: Without dead ends: 1442 [2018-11-23 04:39:44,427 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2018-11-23 04:39:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1441. [2018-11-23 04:39:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-11-23 04:39:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2270 transitions. [2018-11-23 04:39:44,476 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2270 transitions. Word has length 224 [2018-11-23 04:39:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:39:44,477 INFO L480 AbstractCegarLoop]: Abstraction has 1441 states and 2270 transitions. [2018-11-23 04:39:44,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:39:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2270 transitions. [2018-11-23 04:39:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-23 04:39:44,480 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:39:44,480 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:39:44,480 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:39:44,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash -749759919, now seen corresponding path program 1 times [2018-11-23 04:39:44,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:39:44,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:39:44,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,481 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:39:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:39:44,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:39:44,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:39:44,557 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:44,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:39:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:39:44,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,558 INFO L87 Difference]: Start difference. First operand 1441 states and 2270 transitions. Second operand 3 states. [2018-11-23 04:39:44,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:39:44,629 INFO L93 Difference]: Finished difference Result 3227 states and 5251 transitions. [2018-11-23 04:39:44,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:39:44,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2018-11-23 04:39:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:39:44,634 INFO L225 Difference]: With dead ends: 3227 [2018-11-23 04:39:44,634 INFO L226 Difference]: Without dead ends: 1902 [2018-11-23 04:39:44,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2018-11-23 04:39:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1901. [2018-11-23 04:39:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2018-11-23 04:39:44,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 3098 transitions. [2018-11-23 04:39:44,704 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 3098 transitions. Word has length 225 [2018-11-23 04:39:44,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:39:44,705 INFO L480 AbstractCegarLoop]: Abstraction has 1901 states and 3098 transitions. [2018-11-23 04:39:44,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:39:44,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 3098 transitions. [2018-11-23 04:39:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-23 04:39:44,710 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:39:44,710 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:39:44,710 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:39:44,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1837575701, now seen corresponding path program 1 times [2018-11-23 04:39:44,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:39:44,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:39:44,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:44,711 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:39:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:39:44,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:39:44,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:39:44,794 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:44,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:39:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:39:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,795 INFO L87 Difference]: Start difference. First operand 1901 states and 3098 transitions. Second operand 3 states. [2018-11-23 04:39:44,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:39:44,892 INFO L93 Difference]: Finished difference Result 4555 states and 7643 transitions. [2018-11-23 04:39:44,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:39:44,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2018-11-23 04:39:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:39:44,901 INFO L225 Difference]: With dead ends: 4555 [2018-11-23 04:39:44,901 INFO L226 Difference]: Without dead ends: 2782 [2018-11-23 04:39:44,905 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2018-11-23 04:39:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2781. [2018-11-23 04:39:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2781 states. [2018-11-23 04:39:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2781 states to 2781 states and 4668 transitions. [2018-11-23 04:39:45,016 INFO L78 Accepts]: Start accepts. Automaton has 2781 states and 4668 transitions. Word has length 226 [2018-11-23 04:39:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:39:45,016 INFO L480 AbstractCegarLoop]: Abstraction has 2781 states and 4668 transitions. [2018-11-23 04:39:45,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:39:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2781 states and 4668 transitions. [2018-11-23 04:39:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-23 04:39:45,024 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:39:45,024 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:39:45,024 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:39:45,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -528340175, now seen corresponding path program 1 times [2018-11-23 04:39:45,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:39:45,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:45,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:39:45,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:45,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:39:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:39:45,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:39:45,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:39:45,102 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:45,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:39:45,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:39:45,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:45,102 INFO L87 Difference]: Start difference. First operand 2781 states and 4668 transitions. Second operand 3 states. [2018-11-23 04:39:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:39:45,263 INFO L93 Difference]: Finished difference Result 7107 states and 12197 transitions. [2018-11-23 04:39:45,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:39:45,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-11-23 04:39:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:39:45,276 INFO L225 Difference]: With dead ends: 7107 [2018-11-23 04:39:45,276 INFO L226 Difference]: Without dead ends: 4466 [2018-11-23 04:39:45,281 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:39:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2018-11-23 04:39:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 4465. [2018-11-23 04:39:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2018-11-23 04:39:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 7646 transitions. [2018-11-23 04:39:45,462 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 7646 transitions. Word has length 227 [2018-11-23 04:39:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:39:45,462 INFO L480 AbstractCegarLoop]: Abstraction has 4465 states and 7646 transitions. [2018-11-23 04:39:45,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:39:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 7646 transitions. [2018-11-23 04:39:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-23 04:39:45,473 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:39:45,474 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:39:45,474 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:39:45,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash -992243179, now seen corresponding path program 1 times [2018-11-23 04:39:45,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:39:45,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:45,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:39:45,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:39:45,475 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:39:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:39:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-23 04:39:45,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:39:45,670 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:39:45,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-11-23 04:39:45,670 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [266], [267], [276], [280], [282], [284], [287], [294], [301], [306], [313], [316], [318], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [946], [949], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1264], [1265], [1268], [1269], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:39:45,673 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:39:45,673 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:39:46,588 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:39:46,588 INFO L272 AbstractInterpreter]: Visited 93 different actions 128 times. Merged at 8 different actions 8 times. Never widened. Performed 8948 root evaluator evaluations with a maximum evaluation depth of 3. Performed 8948 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 414 variables. [2018-11-23 04:39:46,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:39:46,590 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:39:47,141 INFO L227 lantSequenceWeakener]: Weakened 105 states. On average, predicates are now at 96.14% of their original sizes. [2018-11-23 04:39:47,141 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:39:47,745 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-11-23 04:39:47,745 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:39:47,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:39:47,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [44] imperfect sequences [19] total 61 [2018-11-23 04:39:47,745 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:39:47,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-23 04:39:47,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-23 04:39:47,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 04:39:47,747 INFO L87 Difference]: Start difference. First operand 4465 states and 7646 transitions. Second operand 44 states. [2018-11-23 04:40:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:25,497 INFO L93 Difference]: Finished difference Result 9202 states and 15735 transitions. [2018-11-23 04:40:25,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-23 04:40:25,497 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 229 [2018-11-23 04:40:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:25,514 INFO L225 Difference]: With dead ends: 9202 [2018-11-23 04:40:25,514 INFO L226 Difference]: Without dead ends: 4923 [2018-11-23 04:40:25,524 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 261 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=544, Invalid=5308, Unknown=0, NotChecked=0, Total=5852 [2018-11-23 04:40:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2018-11-23 04:40:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4550. [2018-11-23 04:40:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4550 states. [2018-11-23 04:40:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 7762 transitions. [2018-11-23 04:40:25,820 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 7762 transitions. Word has length 229 [2018-11-23 04:40:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:25,820 INFO L480 AbstractCegarLoop]: Abstraction has 4550 states and 7762 transitions. [2018-11-23 04:40:25,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-23 04:40:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 7762 transitions. [2018-11-23 04:40:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-23 04:40:25,836 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:25,836 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:25,837 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:25,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash 316547339, now seen corresponding path program 1 times [2018-11-23 04:40:25,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:25,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:25,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:25,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:25,838 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:40:25,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:40:25,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:40:25,932 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:25,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:40:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:40:25,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:25,933 INFO L87 Difference]: Start difference. First operand 4550 states and 7762 transitions. Second operand 3 states. [2018-11-23 04:40:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:26,230 INFO L93 Difference]: Finished difference Result 12332 states and 21364 transitions. [2018-11-23 04:40:26,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:40:26,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-11-23 04:40:26,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:26,255 INFO L225 Difference]: With dead ends: 12332 [2018-11-23 04:40:26,255 INFO L226 Difference]: Without dead ends: 7965 [2018-11-23 04:40:26,263 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:26,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2018-11-23 04:40:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7964. [2018-11-23 04:40:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7964 states. [2018-11-23 04:40:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 13732 transitions. [2018-11-23 04:40:26,578 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 13732 transitions. Word has length 228 [2018-11-23 04:40:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:26,578 INFO L480 AbstractCegarLoop]: Abstraction has 7964 states and 13732 transitions. [2018-11-23 04:40:26,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:40:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 13732 transitions. [2018-11-23 04:40:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-23 04:40:26,596 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:26,596 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:26,597 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:26,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1673032721, now seen corresponding path program 1 times [2018-11-23 04:40:26,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:26,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:26,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:26,598 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:40:26,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:40:26,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:40:26,670 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:26,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:40:26,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:40:26,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:26,671 INFO L87 Difference]: Start difference. First operand 7964 states and 13732 transitions. Second operand 3 states. [2018-11-23 04:40:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:27,211 INFO L93 Difference]: Finished difference Result 22069 states and 38409 transitions. [2018-11-23 04:40:27,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:40:27,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2018-11-23 04:40:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:27,244 INFO L225 Difference]: With dead ends: 22069 [2018-11-23 04:40:27,244 INFO L226 Difference]: Without dead ends: 14311 [2018-11-23 04:40:27,259 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14311 states. [2018-11-23 04:40:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14311 to 14310. [2018-11-23 04:40:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14310 states. [2018-11-23 04:40:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14310 states to 14310 states and 24746 transitions. [2018-11-23 04:40:27,832 INFO L78 Accepts]: Start accepts. Automaton has 14310 states and 24746 transitions. Word has length 229 [2018-11-23 04:40:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:27,833 INFO L480 AbstractCegarLoop]: Abstraction has 14310 states and 24746 transitions. [2018-11-23 04:40:27,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:40:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14310 states and 24746 transitions. [2018-11-23 04:40:27,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-23 04:40:27,861 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:27,862 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:27,862 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:27,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:27,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2029707305, now seen corresponding path program 1 times [2018-11-23 04:40:27,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:27,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:27,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:27,863 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:40:27,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:40:27,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:40:27,950 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:27,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:40:27,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:40:27,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:27,951 INFO L87 Difference]: Start difference. First operand 14310 states and 24746 transitions. Second operand 3 states. [2018-11-23 04:40:28,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:28,963 INFO L93 Difference]: Finished difference Result 40493 states and 70255 transitions. [2018-11-23 04:40:28,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:40:28,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2018-11-23 04:40:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:29,022 INFO L225 Difference]: With dead ends: 40493 [2018-11-23 04:40:29,023 INFO L226 Difference]: Without dead ends: 26413 [2018-11-23 04:40:29,048 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26413 states. [2018-11-23 04:40:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26413 to 26412. [2018-11-23 04:40:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26412 states. [2018-11-23 04:40:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26412 states to 26412 states and 45420 transitions. [2018-11-23 04:40:30,146 INFO L78 Accepts]: Start accepts. Automaton has 26412 states and 45420 transitions. Word has length 230 [2018-11-23 04:40:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:30,146 INFO L480 AbstractCegarLoop]: Abstraction has 26412 states and 45420 transitions. [2018-11-23 04:40:30,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:40:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 26412 states and 45420 transitions. [2018-11-23 04:40:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-23 04:40:30,204 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:30,205 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:30,205 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:30,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1450939215, now seen corresponding path program 1 times [2018-11-23 04:40:30,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:30,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:30,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:30,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:30,206 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:40:30,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:40:30,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:40:30,290 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:30,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:40:30,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:40:30,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:30,291 INFO L87 Difference]: Start difference. First operand 26412 states and 45420 transitions. Second operand 3 states. [2018-11-23 04:40:32,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:32,221 INFO L93 Difference]: Finished difference Result 75621 states and 130069 transitions. [2018-11-23 04:40:32,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:40:32,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2018-11-23 04:40:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:32,331 INFO L225 Difference]: With dead ends: 75621 [2018-11-23 04:40:32,331 INFO L226 Difference]: Without dead ends: 49459 [2018-11-23 04:40:32,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:32,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49459 states. [2018-11-23 04:40:34,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49459 to 49458. [2018-11-23 04:40:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49458 states. [2018-11-23 04:40:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49458 states to 49458 states and 84206 transitions. [2018-11-23 04:40:34,606 INFO L78 Accepts]: Start accepts. Automaton has 49458 states and 84206 transitions. Word has length 231 [2018-11-23 04:40:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:34,606 INFO L480 AbstractCegarLoop]: Abstraction has 49458 states and 84206 transitions. [2018-11-23 04:40:34,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:40:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 49458 states and 84206 transitions. [2018-11-23 04:40:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-23 04:40:34,707 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:34,708 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:34,708 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:34,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1849214857, now seen corresponding path program 1 times [2018-11-23 04:40:34,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:34,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:34,709 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:40:34,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:40:34,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 04:40:34,799 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:34,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 04:40:34,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 04:40:34,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:34,799 INFO L87 Difference]: Start difference. First operand 49458 states and 84206 transitions. Second operand 3 states. [2018-11-23 04:40:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:40:38,641 INFO L93 Difference]: Finished difference Result 142422 states and 242546 transitions. [2018-11-23 04:40:38,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 04:40:38,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2018-11-23 04:40:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:40:38,844 INFO L225 Difference]: With dead ends: 142422 [2018-11-23 04:40:38,845 INFO L226 Difference]: Without dead ends: 93241 [2018-11-23 04:40:38,919 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 04:40:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93241 states. [2018-11-23 04:40:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93241 to 93240. [2018-11-23 04:40:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93240 states. [2018-11-23 04:40:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93240 states to 93240 states and 157168 transitions. [2018-11-23 04:40:43,502 INFO L78 Accepts]: Start accepts. Automaton has 93240 states and 157168 transitions. Word has length 232 [2018-11-23 04:40:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:40:43,502 INFO L480 AbstractCegarLoop]: Abstraction has 93240 states and 157168 transitions. [2018-11-23 04:40:43,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 04:40:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 93240 states and 157168 transitions. [2018-11-23 04:40:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-23 04:40:43,712 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:40:43,712 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:40:43,712 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:40:43,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1952776742, now seen corresponding path program 1 times [2018-11-23 04:40:43,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:40:43,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:43,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:40:43,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:40:43,713 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:40:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:40:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-23 04:40:43,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:40:43,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:40:43,920 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-23 04:40:43,920 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [306], [313], [320], [327], [334], [341], [348], [355], [358], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [946], [949], [953], [973], [976], [985], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:40:43,923 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:40:43,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:40:45,166 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:40:45,166 INFO L272 AbstractInterpreter]: Visited 125 different actions 207 times. Merged at 17 different actions 28 times. Never widened. Performed 15149 root evaluator evaluations with a maximum evaluation depth of 3. Performed 15149 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 3 fixpoints after 2 different actions. Largest state had 417 variables. [2018-11-23 04:40:45,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:40:45,169 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:40:45,711 INFO L227 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 96.16% of their original sizes. [2018-11-23 04:40:45,712 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:40:48,728 INFO L415 sIntCurrentIteration]: We unified 232 AI predicates to 232 [2018-11-23 04:40:48,728 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:40:48,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:40:48,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [64] imperfect sequences [19] total 81 [2018-11-23 04:40:48,728 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:40:48,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-11-23 04:40:48,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-11-23 04:40:48,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=3748, Unknown=0, NotChecked=0, Total=4032 [2018-11-23 04:40:48,730 INFO L87 Difference]: Start difference. First operand 93240 states and 157168 transitions. Second operand 64 states. [2018-11-23 04:42:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:42:06,726 INFO L93 Difference]: Finished difference Result 101275 states and 170359 transitions. [2018-11-23 04:42:06,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-23 04:42:06,726 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 233 [2018-11-23 04:42:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:42:06,951 INFO L225 Difference]: With dead ends: 101275 [2018-11-23 04:42:06,952 INFO L226 Difference]: Without dead ends: 100988 [2018-11-23 04:42:06,968 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 290 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1145, Invalid=13617, Unknown=0, NotChecked=0, Total=14762 [2018-11-23 04:42:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100988 states. [2018-11-23 04:42:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100988 to 94118. [2018-11-23 04:42:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94118 states. [2018-11-23 04:42:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94118 states to 94118 states and 158331 transitions. [2018-11-23 04:42:11,660 INFO L78 Accepts]: Start accepts. Automaton has 94118 states and 158331 transitions. Word has length 233 [2018-11-23 04:42:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:42:11,661 INFO L480 AbstractCegarLoop]: Abstraction has 94118 states and 158331 transitions. [2018-11-23 04:42:11,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-11-23 04:42:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 94118 states and 158331 transitions. [2018-11-23 04:42:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-23 04:42:11,873 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:42:11,873 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:42:11,873 INFO L423 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:42:11,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:42:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1200988727, now seen corresponding path program 1 times [2018-11-23 04:42:11,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:42:11,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:42:11,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:42:11,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:42:11,874 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:42:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:42:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-11-23 04:42:12,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:42:12,083 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:42:12,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-23 04:42:12,084 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [38], [42], [43], [47], [50], [59], [60], [63], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [309], [313], [320], [327], [334], [341], [348], [355], [360], [367], [370], [372], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [946], [949], [953], [973], [976], [985], [1063], [1065], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1212], [1213], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1274], [1275], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1390], [1391], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:42:12,085 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:42:12,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:42:14,398 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:42:14,398 INFO L272 AbstractInterpreter]: Visited 137 different actions 254 times. Merged at 21 different actions 41 times. Never widened. Performed 27136 root evaluator evaluations with a maximum evaluation depth of 3. Performed 27136 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 4 fixpoints after 3 different actions. Largest state had 418 variables. [2018-11-23 04:42:14,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:42:14,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:42:15,059 INFO L227 lantSequenceWeakener]: Weakened 154 states. On average, predicates are now at 96.29% of their original sizes. [2018-11-23 04:42:15,059 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:42:16,434 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-23 04:42:16,434 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:42:16,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:42:16,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [69] imperfect sequences [19] total 86 [2018-11-23 04:42:16,434 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:42:16,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-11-23 04:42:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-11-23 04:42:16,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=4412, Unknown=0, NotChecked=0, Total=4692 [2018-11-23 04:42:16,436 INFO L87 Difference]: Start difference. First operand 94118 states and 158331 transitions. Second operand 69 states. [2018-11-23 04:45:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:45:09,983 INFO L93 Difference]: Finished difference Result 218468 states and 370007 transitions. [2018-11-23 04:45:09,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-11-23 04:45:09,983 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 247 [2018-11-23 04:45:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:45:10,278 INFO L225 Difference]: With dead ends: 218468 [2018-11-23 04:45:10,278 INFO L226 Difference]: Without dead ends: 124636 [2018-11-23 04:45:10,390 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 323 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5506 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1583, Invalid=19587, Unknown=0, NotChecked=0, Total=21170 [2018-11-23 04:45:10,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124636 states. [2018-11-23 04:45:18,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124636 to 118985. [2018-11-23 04:45:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118985 states. [2018-11-23 04:45:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118985 states to 118985 states and 200170 transitions. [2018-11-23 04:45:18,508 INFO L78 Accepts]: Start accepts. Automaton has 118985 states and 200170 transitions. Word has length 247 [2018-11-23 04:45:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:45:18,508 INFO L480 AbstractCegarLoop]: Abstraction has 118985 states and 200170 transitions. [2018-11-23 04:45:18,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-11-23 04:45:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 118985 states and 200170 transitions. [2018-11-23 04:45:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-23 04:45:18,733 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:45:18,733 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:45:18,733 INFO L423 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:45:18,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:18,734 INFO L82 PathProgramCache]: Analyzing trace with hash 549628213, now seen corresponding path program 1 times [2018-11-23 04:45:18,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:45:18,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:18,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:45:18,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:45:18,735 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:45:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:45:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-23 04:45:18,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:45:18,906 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-23 04:45:18,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-23 04:45:18,906 INFO L202 CegarAbsIntRunner]: [2], [4], [6], [9], [12], [18], [19], [20], [33], [35], [39], [42], [43], [47], [50], [60], [63], [64], [67], [76], [77], [80], [90], [96], [99], [109], [110], [139], [142], [143], [144], [146], [223], [225], [229], [231], [256], [260], [263], [264], [267], [276], [280], [282], [284], [287], [294], [301], [304], [306], [313], [320], [327], [334], [341], [348], [355], [358], [440], [443], [449], [450], [452], [469], [587], [590], [599], [600], [602], [603], [604], [607], [609], [611], [614], [643], [697], [699], [700], [704], [705], [708], [718], [731], [734], [735], [737], [739], [746], [750], [753], [756], [787], [790], [792], [871], [922], [936], [939], [941], [944], [946], [949], [953], [973], [976], [985], [1012], [1015], [1024], [1066], [1068], [1069], [1070], [1131], [1133], [1135], [1137], [1138], [1142], [1145], [1151], [1170], [1173], [1175], [1178], [1180], [1183], [1187], [1190], [1191], [1192], [1193], [1194], [1196], [1197], [1198], [1199], [1200], [1201], [1202], [1203], [1204], [1205], [1206], [1207], [1208], [1209], [1210], [1214], [1215], [1216], [1217], [1224], [1234], [1235], [1236], [1237], [1238], [1239], [1240], [1241], [1242], [1243], [1244], [1246], [1247], [1258], [1260], [1261], [1262], [1263], [1284], [1286], [1287], [1304], [1308], [1309], [1310], [1311], [1312], [1313], [1314], [1326], [1327], [1328], [1329], [1330], [1336], [1337], [1338], [1339], [1340], [1341], [1342], [1343], [1348], [1350], [1351], [1352], [1354], [1370], [1392], [1393], [1408], [1409], [1410], [1411], [1412], [1413], [1414], [1415], [1416] [2018-11-23 04:45:18,908 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-23 04:45:18,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-23 04:45:20,874 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-23 04:45:20,874 INFO L272 AbstractInterpreter]: Visited 158 different actions 273 times. Merged at 17 different actions 28 times. Never widened. Performed 20781 root evaluator evaluations with a maximum evaluation depth of 3. Performed 20781 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 3 fixpoints after 2 different actions. Largest state had 417 variables. [2018-11-23 04:45:20,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:45:20,876 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-23 04:45:21,569 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 96.55% of their original sizes. [2018-11-23 04:45:21,569 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-23 04:45:23,562 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-23 04:45:23,562 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-23 04:45:23,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 04:45:23,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [85] imperfect sequences [19] total 102 [2018-11-23 04:45:23,562 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:45:23,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-11-23 04:45:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-11-23 04:45:23,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=6760, Unknown=0, NotChecked=0, Total=7140 [2018-11-23 04:45:23,564 INFO L87 Difference]: Start difference. First operand 118985 states and 200170 transitions. Second operand 85 states. [2018-11-23 04:47:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:47:40,507 INFO L93 Difference]: Finished difference Result 133467 states and 224089 transitions. [2018-11-23 04:47:40,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-11-23 04:47:40,508 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 243 [2018-11-23 04:47:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:47:40,889 INFO L225 Difference]: With dead ends: 133467 [2018-11-23 04:47:40,889 INFO L226 Difference]: Without dead ends: 133184 [2018-11-23 04:47:40,909 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 325 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7690 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1758, Invalid=26298, Unknown=0, NotChecked=0, Total=28056 [2018-11-23 04:47:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133184 states. [2018-11-23 04:47:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133184 to 119868. [2018-11-23 04:47:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119868 states. [2018-11-23 04:47:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119868 states to 119868 states and 201343 transitions. [2018-11-23 04:47:49,664 INFO L78 Accepts]: Start accepts. Automaton has 119868 states and 201343 transitions. Word has length 243 [2018-11-23 04:47:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:47:49,664 INFO L480 AbstractCegarLoop]: Abstraction has 119868 states and 201343 transitions. [2018-11-23 04:47:49,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-11-23 04:47:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 119868 states and 201343 transitions. [2018-11-23 04:47:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-23 04:47:49,906 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:47:49,906 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:47:49,906 INFO L423 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:47:49,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:47:49,907 INFO L82 PathProgramCache]: Analyzing trace with hash 430994222, now seen corresponding path program 1 times [2018-11-23 04:47:49,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:47:49,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:47:49,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:47:49,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:47:49,908 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:47:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:47:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-11-23 04:47:50,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:47:50,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 04:47:50,011 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:47:50,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 04:47:50,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 04:47:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 04:47:50,011 INFO L87 Difference]: Start difference. First operand 119868 states and 201343 transitions. Second operand 8 states. [2018-11-23 04:48:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:48:09,816 INFO L93 Difference]: Finished difference Result 359478 states and 681671 transitions. [2018-11-23 04:48:09,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 04:48:09,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2018-11-23 04:48:09,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:48:10,465 INFO L225 Difference]: With dead ends: 359478 [2018-11-23 04:48:10,465 INFO L226 Difference]: Without dead ends: 239859 [2018-11-23 04:48:10,647 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-23 04:48:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239859 states. [2018-11-23 04:48:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239859 to 237746. [2018-11-23 04:48:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237746 states. [2018-11-23 04:48:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237746 states to 237746 states and 438994 transitions. [2018-11-23 04:48:32,927 INFO L78 Accepts]: Start accepts. Automaton has 237746 states and 438994 transitions. Word has length 256 [2018-11-23 04:48:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:48:32,928 INFO L480 AbstractCegarLoop]: Abstraction has 237746 states and 438994 transitions. [2018-11-23 04:48:32,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 04:48:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 237746 states and 438994 transitions. [2018-11-23 04:48:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-23 04:48:33,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:48:33,742 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:48:33,742 INFO L423 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:48:33,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:48:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1189176815, now seen corresponding path program 1 times [2018-11-23 04:48:33,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:48:33,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:48:33,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:48:33,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:48:33,743 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:48:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:48:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:48:33,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:48:33,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 04:48:33,838 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:48:33,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 04:48:33,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 04:48:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 04:48:33,839 INFO L87 Difference]: Start difference. First operand 237746 states and 438994 transitions. Second operand 8 states. [2018-11-23 04:49:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:49:15,832 INFO L93 Difference]: Finished difference Result 713424 states and 1472828 transitions. [2018-11-23 04:49:15,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 04:49:15,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 251 [2018-11-23 04:49:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:49:17,466 INFO L225 Difference]: With dead ends: 713424 [2018-11-23 04:49:17,466 INFO L226 Difference]: Without dead ends: 475972 [2018-11-23 04:49:18,050 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-23 04:49:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475972 states. [2018-11-23 04:50:02,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475972 to 473547. [2018-11-23 04:50:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473547 states. [2018-11-23 04:50:04,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473547 states to 473547 states and 953185 transitions. [2018-11-23 04:50:04,858 INFO L78 Accepts]: Start accepts. Automaton has 473547 states and 953185 transitions. Word has length 251 [2018-11-23 04:50:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:50:04,858 INFO L480 AbstractCegarLoop]: Abstraction has 473547 states and 953185 transitions. [2018-11-23 04:50:04,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 04:50:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 473547 states and 953185 transitions. [2018-11-23 04:50:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-23 04:50:06,891 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:50:06,892 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:50:06,892 INFO L423 AbstractCegarLoop]: === Iteration 24 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:50:06,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:50:06,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1562121662, now seen corresponding path program 1 times [2018-11-23 04:50:06,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 04:50:06,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:50:06,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:50:06,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:50:06,893 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 04:50:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:50:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-23 04:50:07,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:50:07,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 04:50:07,002 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 04:50:07,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 04:50:07,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 04:50:07,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 04:50:07,003 INFO L87 Difference]: Start difference. First operand 473547 states and 953185 transitions. Second operand 8 states. [2018-11-23 04:51:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:51:26,419 INFO L93 Difference]: Finished difference Result 1421475 states and 3171926 transitions. [2018-11-23 04:51:26,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-23 04:51:26,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2018-11-23 04:51:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:51:30,571 INFO L225 Difference]: With dead ends: 1421475 [2018-11-23 04:51:30,571 INFO L226 Difference]: Without dead ends: 948267 [2018-11-23 04:51:32,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-23 04:51:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948267 states.