./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c1b0557200bb93e177956c2673df3bb0520e234 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:03:29,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:03:29,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:03:29,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:03:29,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:03:29,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:03:29,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:03:29,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:03:29,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:03:29,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:03:29,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:03:29,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:03:29,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:03:29,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:03:29,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:03:29,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:03:29,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:03:29,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:03:29,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:03:29,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:03:29,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:03:29,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:03:29,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:03:29,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:03:29,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:03:29,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:03:29,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:03:29,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:03:29,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:03:29,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:03:29,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:03:29,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:03:29,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:03:29,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:03:29,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:03:29,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:03:29,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:03:29,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:03:29,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:03:29,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:03:29,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:03:29,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:03:29,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:03:29,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:03:29,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:03:29,308 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:03:29,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:03:29,309 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:03:29,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:03:29,310 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:03:29,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:03:29,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:03:29,311 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:03:29,312 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:03:29,312 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:03:29,312 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:03:29,313 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:03:29,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:03:29,314 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:03:29,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:03:29,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:03:29,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:03:29,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:03:29,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:03:29,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:03:29,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:03:29,316 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:03:29,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:03:29,317 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:03:29,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:03:29,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:03:29,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:03:29,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:03:29,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:03:29,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:03:29,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:03:29,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:03:29,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:03:29,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:03:29,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:03:29,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:03:29,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:03:29,321 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1b0557200bb93e177956c2673df3bb0520e234 [2020-11-30 03:03:29,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:03:29,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:03:29,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:03:29,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:03:29,751 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:03:29,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-11-30 03:03:29,863 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/data/80a4d5145/7abf052f7d96479d89d9bb065d8959f6/FLAGa78b01e42 [2020-11-30 03:03:30,540 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:03:30,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2020-11-30 03:03:30,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/data/80a4d5145/7abf052f7d96479d89d9bb065d8959f6/FLAGa78b01e42 [2020-11-30 03:03:30,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/data/80a4d5145/7abf052f7d96479d89d9bb065d8959f6 [2020-11-30 03:03:30,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:03:30,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:03:30,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:03:30,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:03:30,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:03:30,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:03:30" (1/1) ... [2020-11-30 03:03:30,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d504bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:30, skipping insertion in model container [2020-11-30 03:03:30,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:03:30" (1/1) ... [2020-11-30 03:03:30,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:03:30,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:03:31,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:03:31,245 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:03:31,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:03:31,329 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:03:31,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31 WrapperNode [2020-11-30 03:03:31,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:03:31,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:03:31,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:03:31,332 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:03:31,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:03:31,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:03:31,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:03:31,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:03:31,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... [2020-11-30 03:03:31,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:03:31,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:03:31,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:03:31,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:03:31,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/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 [2020-11-30 03:03:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:03:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:03:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:03:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:03:31,744 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 03:03:32,718 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-11-30 03:03:32,718 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-11-30 03:03:33,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:03:33,168 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 03:03:33,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:03:33 BoogieIcfgContainer [2020-11-30 03:03:33,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:03:33,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:03:33,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:03:33,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:03:33,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:03:30" (1/3) ... [2020-11-30 03:03:33,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8a7a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:03:33, skipping insertion in model container [2020-11-30 03:03:33,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:03:31" (2/3) ... [2020-11-30 03:03:33,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8a7a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:03:33, skipping insertion in model container [2020-11-30 03:03:33,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:03:33" (3/3) ... [2020-11-30 03:03:33,182 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2020-11-30 03:03:33,194 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:03:33,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:03:33,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:03:33,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:03:33,253 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:03:33,253 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:03:33,253 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:03:33,253 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:03:33,254 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:03:33,254 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:03:33,254 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:03:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-11-30 03:03:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 03:03:33,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:33,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:33,286 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1060751799, now seen corresponding path program 1 times [2020-11-30 03:03:33,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:33,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734179979] [2020-11-30 03:03:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:33,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734179979] [2020-11-30 03:03:33,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:33,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:33,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963123824] [2020-11-30 03:03:33,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:33,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:33,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:33,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:33,562 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 3 states. [2020-11-30 03:03:33,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:33,983 INFO L93 Difference]: Finished difference Result 254 states and 448 transitions. [2020-11-30 03:03:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:33,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-30 03:03:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:34,010 INFO L225 Difference]: With dead ends: 254 [2020-11-30 03:03:34,020 INFO L226 Difference]: Without dead ends: 146 [2020-11-30 03:03:34,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-30 03:03:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2020-11-30 03:03:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 03:03:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 228 transitions. [2020-11-30 03:03:34,122 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 228 transitions. Word has length 39 [2020-11-30 03:03:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:34,123 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 228 transitions. [2020-11-30 03:03:34,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 228 transitions. [2020-11-30 03:03:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 03:03:34,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:34,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:34,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:03:34,127 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:34,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:34,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1469367271, now seen corresponding path program 1 times [2020-11-30 03:03:34,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:34,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668989540] [2020-11-30 03:03:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668989540] [2020-11-30 03:03:34,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:34,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:34,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478292265] [2020-11-30 03:03:34,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:34,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:34,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:34,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:34,250 INFO L87 Difference]: Start difference. First operand 141 states and 228 transitions. Second operand 3 states. [2020-11-30 03:03:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:34,611 INFO L93 Difference]: Finished difference Result 326 states and 536 transitions. [2020-11-30 03:03:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:34,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-30 03:03:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:34,615 INFO L225 Difference]: With dead ends: 326 [2020-11-30 03:03:34,615 INFO L226 Difference]: Without dead ends: 185 [2020-11-30 03:03:34,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-11-30 03:03:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2020-11-30 03:03:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-30 03:03:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 301 transitions. [2020-11-30 03:03:34,643 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 301 transitions. Word has length 40 [2020-11-30 03:03:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:34,644 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 301 transitions. [2020-11-30 03:03:34,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 301 transitions. [2020-11-30 03:03:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-30 03:03:34,656 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:34,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:34,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:03:34,657 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1504835653, now seen corresponding path program 1 times [2020-11-30 03:03:34,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:34,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719290683] [2020-11-30 03:03:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:34,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719290683] [2020-11-30 03:03:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:34,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:34,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865595138] [2020-11-30 03:03:34,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:34,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:34,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:34,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:34,818 INFO L87 Difference]: Start difference. First operand 180 states and 301 transitions. Second operand 3 states. [2020-11-30 03:03:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:35,133 INFO L93 Difference]: Finished difference Result 387 states and 654 transitions. [2020-11-30 03:03:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:35,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-11-30 03:03:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:35,136 INFO L225 Difference]: With dead ends: 387 [2020-11-30 03:03:35,136 INFO L226 Difference]: Without dead ends: 209 [2020-11-30 03:03:35,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-30 03:03:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-11-30 03:03:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-30 03:03:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 353 transitions. [2020-11-30 03:03:35,170 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 353 transitions. Word has length 66 [2020-11-30 03:03:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:35,170 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 353 transitions. [2020-11-30 03:03:35,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 353 transitions. [2020-11-30 03:03:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 03:03:35,172 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:35,172 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-11-30 03:03:35,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 03:03:35,174 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 805466244, now seen corresponding path program 1 times [2020-11-30 03:03:35,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:35,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007005614] [2020-11-30 03:03:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:35,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007005614] [2020-11-30 03:03:35,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:35,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:35,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897708300] [2020-11-30 03:03:35,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:35,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:35,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:35,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:35,327 INFO L87 Difference]: Start difference. First operand 209 states and 353 transitions. Second operand 3 states. [2020-11-30 03:03:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:35,608 INFO L93 Difference]: Finished difference Result 431 states and 728 transitions. [2020-11-30 03:03:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:35,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-30 03:03:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:35,611 INFO L225 Difference]: With dead ends: 431 [2020-11-30 03:03:35,612 INFO L226 Difference]: Without dead ends: 224 [2020-11-30 03:03:35,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-30 03:03:35,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2020-11-30 03:03:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-11-30 03:03:35,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 372 transitions. [2020-11-30 03:03:35,629 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 372 transitions. Word has length 77 [2020-11-30 03:03:35,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:35,629 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 372 transitions. [2020-11-30 03:03:35,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:35,630 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 372 transitions. [2020-11-30 03:03:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 03:03:35,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:35,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:35,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 03:03:35,632 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:35,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1276249272, now seen corresponding path program 1 times [2020-11-30 03:03:35,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:35,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007381195] [2020-11-30 03:03:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:35,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007381195] [2020-11-30 03:03:35,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:35,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:35,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301494519] [2020-11-30 03:03:35,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:35,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:35,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:35,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:35,763 INFO L87 Difference]: Start difference. First operand 222 states and 372 transitions. Second operand 3 states. [2020-11-30 03:03:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:36,084 INFO L93 Difference]: Finished difference Result 483 states and 815 transitions. [2020-11-30 03:03:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:36,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-30 03:03:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:36,088 INFO L225 Difference]: With dead ends: 483 [2020-11-30 03:03:36,088 INFO L226 Difference]: Without dead ends: 263 [2020-11-30 03:03:36,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:36,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-11-30 03:03:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2020-11-30 03:03:36,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-11-30 03:03:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 440 transitions. [2020-11-30 03:03:36,112 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 440 transitions. Word has length 77 [2020-11-30 03:03:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:36,117 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 440 transitions. [2020-11-30 03:03:36,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 440 transitions. [2020-11-30 03:03:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 03:03:36,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:36,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-30 03:03:36,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 03:03:36,121 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:36,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:36,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1407509017, now seen corresponding path program 1 times [2020-11-30 03:03:36,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:36,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771315254] [2020-11-30 03:03:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:36,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771315254] [2020-11-30 03:03:36,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:36,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:36,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613873830] [2020-11-30 03:03:36,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:36,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:36,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:36,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:36,223 INFO L87 Difference]: Start difference. First operand 260 states and 440 transitions. Second operand 3 states. [2020-11-30 03:03:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:36,471 INFO L93 Difference]: Finished difference Result 520 states and 880 transitions. [2020-11-30 03:03:36,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:36,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-30 03:03:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:36,474 INFO L225 Difference]: With dead ends: 520 [2020-11-30 03:03:36,474 INFO L226 Difference]: Without dead ends: 262 [2020-11-30 03:03:36,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-30 03:03:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2020-11-30 03:03:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-11-30 03:03:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 436 transitions. [2020-11-30 03:03:36,494 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 436 transitions. Word has length 78 [2020-11-30 03:03:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:36,495 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 436 transitions. [2020-11-30 03:03:36,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 436 transitions. [2020-11-30 03:03:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-30 03:03:36,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:36,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:36,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 03:03:36,499 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1212010746, now seen corresponding path program 1 times [2020-11-30 03:03:36,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:36,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425097366] [2020-11-30 03:03:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425097366] [2020-11-30 03:03:36,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:36,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:36,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271216862] [2020-11-30 03:03:36,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:36,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:36,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:36,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:36,582 INFO L87 Difference]: Start difference. First operand 260 states and 436 transitions. Second operand 3 states. [2020-11-30 03:03:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:36,904 INFO L93 Difference]: Finished difference Result 521 states and 873 transitions. [2020-11-30 03:03:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:36,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-30 03:03:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:36,908 INFO L225 Difference]: With dead ends: 521 [2020-11-30 03:03:36,908 INFO L226 Difference]: Without dead ends: 261 [2020-11-30 03:03:36,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-11-30 03:03:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-11-30 03:03:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-11-30 03:03:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 431 transitions. [2020-11-30 03:03:36,937 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 431 transitions. Word has length 78 [2020-11-30 03:03:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:36,937 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 431 transitions. [2020-11-30 03:03:36,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 431 transitions. [2020-11-30 03:03:36,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-30 03:03:36,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:36,944 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-11-30 03:03:36,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 03:03:36,945 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:36,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:36,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1281507579, now seen corresponding path program 1 times [2020-11-30 03:03:36,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:36,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584810651] [2020-11-30 03:03:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-11-30 03:03:37,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584810651] [2020-11-30 03:03:37,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:37,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474977790] [2020-11-30 03:03:37,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:37,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:37,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:37,033 INFO L87 Difference]: Start difference. First operand 258 states and 431 transitions. Second operand 3 states. [2020-11-30 03:03:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:37,248 INFO L93 Difference]: Finished difference Result 521 states and 869 transitions. [2020-11-30 03:03:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:37,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-30 03:03:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:37,251 INFO L225 Difference]: With dead ends: 521 [2020-11-30 03:03:37,251 INFO L226 Difference]: Without dead ends: 265 [2020-11-30 03:03:37,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-11-30 03:03:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2020-11-30 03:03:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-11-30 03:03:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 434 transitions. [2020-11-30 03:03:37,264 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 434 transitions. Word has length 86 [2020-11-30 03:03:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:37,264 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 434 transitions. [2020-11-30 03:03:37,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 434 transitions. [2020-11-30 03:03:37,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 03:03:37,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:37,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 03:03:37,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 03:03:37,266 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1259072551, now seen corresponding path program 1 times [2020-11-30 03:03:37,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:37,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044938541] [2020-11-30 03:03:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:37,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044938541] [2020-11-30 03:03:37,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:37,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:37,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006752669] [2020-11-30 03:03:37,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:37,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:37,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:37,331 INFO L87 Difference]: Start difference. First operand 265 states and 434 transitions. Second operand 3 states. [2020-11-30 03:03:37,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:37,622 INFO L93 Difference]: Finished difference Result 557 states and 915 transitions. [2020-11-30 03:03:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:37,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 03:03:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:37,626 INFO L225 Difference]: With dead ends: 557 [2020-11-30 03:03:37,627 INFO L226 Difference]: Without dead ends: 294 [2020-11-30 03:03:37,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-11-30 03:03:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2020-11-30 03:03:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-11-30 03:03:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 477 transitions. [2020-11-30 03:03:37,666 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 477 transitions. Word has length 91 [2020-11-30 03:03:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:37,667 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 477 transitions. [2020-11-30 03:03:37,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:37,667 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 477 transitions. [2020-11-30 03:03:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-30 03:03:37,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:37,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 03:03:37,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 03:03:37,669 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:37,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2005927930, now seen corresponding path program 1 times [2020-11-30 03:03:37,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:37,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421377280] [2020-11-30 03:03:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:37,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421377280] [2020-11-30 03:03:37,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:37,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937589692] [2020-11-30 03:03:37,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:37,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:37,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:37,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:37,718 INFO L87 Difference]: Start difference. First operand 292 states and 477 transitions. Second operand 3 states. [2020-11-30 03:03:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:38,028 INFO L93 Difference]: Finished difference Result 614 states and 1007 transitions. [2020-11-30 03:03:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:38,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-11-30 03:03:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:38,033 INFO L225 Difference]: With dead ends: 614 [2020-11-30 03:03:38,033 INFO L226 Difference]: Without dead ends: 324 [2020-11-30 03:03:38,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-30 03:03:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-11-30 03:03:38,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-30 03:03:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 515 transitions. [2020-11-30 03:03:38,062 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 515 transitions. Word has length 92 [2020-11-30 03:03:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:38,063 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 515 transitions. [2020-11-30 03:03:38,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 515 transitions. [2020-11-30 03:03:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-30 03:03:38,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:38,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:38,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 03:03:38,066 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:38,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1932329814, now seen corresponding path program 1 times [2020-11-30 03:03:38,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:38,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150962442] [2020-11-30 03:03:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:38,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150962442] [2020-11-30 03:03:38,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:38,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:38,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984273577] [2020-11-30 03:03:38,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:38,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:38,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:38,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,137 INFO L87 Difference]: Start difference. First operand 317 states and 515 transitions. Second operand 3 states. [2020-11-30 03:03:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:38,460 INFO L93 Difference]: Finished difference Result 634 states and 1030 transitions. [2020-11-30 03:03:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:38,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-11-30 03:03:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:38,465 INFO L225 Difference]: With dead ends: 634 [2020-11-30 03:03:38,465 INFO L226 Difference]: Without dead ends: 319 [2020-11-30 03:03:38,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-11-30 03:03:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 317. [2020-11-30 03:03:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-30 03:03:38,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 511 transitions. [2020-11-30 03:03:38,484 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 511 transitions. Word has length 92 [2020-11-30 03:03:38,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:38,485 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 511 transitions. [2020-11-30 03:03:38,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:38,485 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 511 transitions. [2020-11-30 03:03:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-30 03:03:38,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:38,489 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 03:03:38,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 03:03:38,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -212953981, now seen corresponding path program 1 times [2020-11-30 03:03:38,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442003279] [2020-11-30 03:03:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-30 03:03:38,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442003279] [2020-11-30 03:03:38,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:38,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:38,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040907707] [2020-11-30 03:03:38,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:38,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:38,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:38,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,560 INFO L87 Difference]: Start difference. First operand 317 states and 511 transitions. Second operand 3 states. [2020-11-30 03:03:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:38,886 INFO L93 Difference]: Finished difference Result 639 states and 1032 transitions. [2020-11-30 03:03:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:38,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-11-30 03:03:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:38,889 INFO L225 Difference]: With dead ends: 639 [2020-11-30 03:03:38,889 INFO L226 Difference]: Without dead ends: 324 [2020-11-30 03:03:38,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-30 03:03:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-11-30 03:03:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-30 03:03:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 506 transitions. [2020-11-30 03:03:38,908 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 506 transitions. Word has length 93 [2020-11-30 03:03:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:38,909 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 506 transitions. [2020-11-30 03:03:38,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 506 transitions. [2020-11-30 03:03:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-30 03:03:38,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:38,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:38,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 03:03:38,912 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:38,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1223525508, now seen corresponding path program 1 times [2020-11-30 03:03:38,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:38,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112076683] [2020-11-30 03:03:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-30 03:03:38,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112076683] [2020-11-30 03:03:38,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:38,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:38,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667649179] [2020-11-30 03:03:38,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:38,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:38,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:38,988 INFO L87 Difference]: Start difference. First operand 317 states and 506 transitions. Second operand 3 states. [2020-11-30 03:03:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:39,263 INFO L93 Difference]: Finished difference Result 653 states and 1043 transitions. [2020-11-30 03:03:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:39,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-11-30 03:03:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:39,267 INFO L225 Difference]: With dead ends: 653 [2020-11-30 03:03:39,267 INFO L226 Difference]: Without dead ends: 338 [2020-11-30 03:03:39,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-11-30 03:03:39,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-11-30 03:03:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-11-30 03:03:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 531 transitions. [2020-11-30 03:03:39,286 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 531 transitions. Word has length 94 [2020-11-30 03:03:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:39,287 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 531 transitions. [2020-11-30 03:03:39,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:39,287 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 531 transitions. [2020-11-30 03:03:39,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-30 03:03:39,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:39,288 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:39,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 03:03:39,289 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1859181209, now seen corresponding path program 1 times [2020-11-30 03:03:39,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:39,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121590937] [2020-11-30 03:03:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-30 03:03:39,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121590937] [2020-11-30 03:03:39,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:39,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:03:39,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719111328] [2020-11-30 03:03:39,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:39,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:39,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:39,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:39,346 INFO L87 Difference]: Start difference. First operand 336 states and 531 transitions. Second operand 3 states. [2020-11-30 03:03:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:39,649 INFO L93 Difference]: Finished difference Result 672 states and 1062 transitions. [2020-11-30 03:03:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:39,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-30 03:03:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:39,652 INFO L225 Difference]: With dead ends: 672 [2020-11-30 03:03:39,653 INFO L226 Difference]: Without dead ends: 338 [2020-11-30 03:03:39,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-11-30 03:03:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2020-11-30 03:03:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-11-30 03:03:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 525 transitions. [2020-11-30 03:03:39,676 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 525 transitions. Word has length 95 [2020-11-30 03:03:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:39,676 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 525 transitions. [2020-11-30 03:03:39,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 525 transitions. [2020-11-30 03:03:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-30 03:03:39,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:39,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-30 03:03:39,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 03:03:39,679 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:39,679 INFO L82 PathProgramCache]: Analyzing trace with hash -930312080, now seen corresponding path program 1 times [2020-11-30 03:03:39,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:39,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541496159] [2020-11-30 03:03:39,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541496159] [2020-11-30 03:03:39,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913993641] [2020-11-30 03:03:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:39,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 03:03:39,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:03:39,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:40,131 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:03:40,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:03:40,190 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:03:40,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:03:40,222 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 03:03:40,231 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:03:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-11-30 03:03:40,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:03:40,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 5] total 6 [2020-11-30 03:03:40,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840689776] [2020-11-30 03:03:40,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:40,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:40,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:03:40,277 INFO L87 Difference]: Start difference. First operand 336 states and 525 transitions. Second operand 3 states. [2020-11-30 03:03:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:40,364 INFO L93 Difference]: Finished difference Result 669 states and 1047 transitions. [2020-11-30 03:03:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:40,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-11-30 03:03:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:40,371 INFO L225 Difference]: With dead ends: 669 [2020-11-30 03:03:40,371 INFO L226 Difference]: Without dead ends: 667 [2020-11-30 03:03:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 211 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:03:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-11-30 03:03:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 664. [2020-11-30 03:03:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-11-30 03:03:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1041 transitions. [2020-11-30 03:03:40,417 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1041 transitions. Word has length 108 [2020-11-30 03:03:40,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:40,417 INFO L481 AbstractCegarLoop]: Abstraction has 664 states and 1041 transitions. [2020-11-30 03:03:40,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1041 transitions. [2020-11-30 03:03:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 03:03:40,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:40,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:40,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-30 03:03:40,634 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash -218690707, now seen corresponding path program 1 times [2020-11-30 03:03:40,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:40,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49583140] [2020-11-30 03:03:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:40,654 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:03:40,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969154310] [2020-11-30 03:03:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 03:03:40,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-30 03:03:40,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-11-30 03:03:40,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49583140] [2020-11-30 03:03:40,889 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:03:40,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969154310] [2020-11-30 03:03:40,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:40,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 03:03:40,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913462371] [2020-11-30 03:03:40,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:03:40,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:40,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:03:40,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:03:40,891 INFO L87 Difference]: Start difference. First operand 664 states and 1041 transitions. Second operand 4 states. [2020-11-30 03:03:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:41,501 INFO L93 Difference]: Finished difference Result 1490 states and 2332 transitions. [2020-11-30 03:03:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:03:41,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-11-30 03:03:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:41,507 INFO L225 Difference]: With dead ends: 1490 [2020-11-30 03:03:41,507 INFO L226 Difference]: Without dead ends: 786 [2020-11-30 03:03:41,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:03:41,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2020-11-30 03:03:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 766. [2020-11-30 03:03:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-11-30 03:03:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1153 transitions. [2020-11-30 03:03:41,554 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1153 transitions. Word has length 111 [2020-11-30 03:03:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:41,555 INFO L481 AbstractCegarLoop]: Abstraction has 766 states and 1153 transitions. [2020-11-30 03:03:41,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:03:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1153 transitions. [2020-11-30 03:03:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-11-30 03:03:41,558 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:41,558 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:41,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-30 03:03:41,787 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:41,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1718724971, now seen corresponding path program 1 times [2020-11-30 03:03:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:41,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248476268] [2020-11-30 03:03:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:41,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:03:41,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874996884] [2020-11-30 03:03:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:41,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:03:41,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-11-30 03:03:42,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-11-30 03:03:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248476268] [2020-11-30 03:03:42,084 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:03:42,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874996884] [2020-11-30 03:03:42,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:42,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 03:03:42,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431411309] [2020-11-30 03:03:42,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:03:42,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:42,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:03:42,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:03:42,088 INFO L87 Difference]: Start difference. First operand 766 states and 1153 transitions. Second operand 6 states. [2020-11-30 03:03:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:42,837 INFO L93 Difference]: Finished difference Result 1598 states and 2399 transitions. [2020-11-30 03:03:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:03:42,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-11-30 03:03:42,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:42,845 INFO L225 Difference]: With dead ends: 1598 [2020-11-30 03:03:42,845 INFO L226 Difference]: Without dead ends: 834 [2020-11-30 03:03:42,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:03:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-11-30 03:03:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-11-30 03:03:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-30 03:03:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1141 transitions. [2020-11-30 03:03:42,896 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1141 transitions. Word has length 142 [2020-11-30 03:03:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:42,897 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1141 transitions. [2020-11-30 03:03:42,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:03:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1141 transitions. [2020-11-30 03:03:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-11-30 03:03:42,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:42,901 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:43,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 03:03:43,127 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:43,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2039712293, now seen corresponding path program 1 times [2020-11-30 03:03:43,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:43,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225724980] [2020-11-30 03:03:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-11-30 03:03:43,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225724980] [2020-11-30 03:03:43,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:43,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:03:43,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060863307] [2020-11-30 03:03:43,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:43,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:43,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:43,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:43,190 INFO L87 Difference]: Start difference. First operand 803 states and 1141 transitions. Second operand 3 states. [2020-11-30 03:03:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:43,540 INFO L93 Difference]: Finished difference Result 1608 states and 2284 transitions. [2020-11-30 03:03:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:43,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-11-30 03:03:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:43,547 INFO L225 Difference]: With dead ends: 1608 [2020-11-30 03:03:43,547 INFO L226 Difference]: Without dead ends: 807 [2020-11-30 03:03:43,549 INFO L677 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 [2020-11-30 03:03:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2020-11-30 03:03:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2020-11-30 03:03:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-30 03:03:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1127 transitions. [2020-11-30 03:03:43,610 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1127 transitions. Word has length 157 [2020-11-30 03:03:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:43,610 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1127 transitions. [2020-11-30 03:03:43,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1127 transitions. [2020-11-30 03:03:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-30 03:03:43,614 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:43,614 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:43,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 03:03:43,615 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:43,615 INFO L82 PathProgramCache]: Analyzing trace with hash 701408772, now seen corresponding path program 1 times [2020-11-30 03:03:43,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:43,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11434445] [2020-11-30 03:03:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:43,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:03:43,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185340792] [2020-11-30 03:03:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:43,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 03:03:43,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:43,787 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-11-30 03:03:43,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-11-30 03:03:43,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11434445] [2020-11-30 03:03:43,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:03:43,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185340792] [2020-11-30 03:03:43,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:43,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:03:43,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274592006] [2020-11-30 03:03:43,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:03:43,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:43,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:03:43,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:03:43,863 INFO L87 Difference]: Start difference. First operand 803 states and 1127 transitions. Second operand 4 states. [2020-11-30 03:03:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:44,237 INFO L93 Difference]: Finished difference Result 1241 states and 1741 transitions. [2020-11-30 03:03:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:03:44,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-11-30 03:03:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:44,244 INFO L225 Difference]: With dead ends: 1241 [2020-11-30 03:03:44,244 INFO L226 Difference]: Without dead ends: 819 [2020-11-30 03:03:44,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:03:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-11-30 03:03:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 803. [2020-11-30 03:03:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-30 03:03:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1125 transitions. [2020-11-30 03:03:44,288 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1125 transitions. Word has length 181 [2020-11-30 03:03:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:44,289 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1125 transitions. [2020-11-30 03:03:44,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:03:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1125 transitions. [2020-11-30 03:03:44,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-11-30 03:03:44,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:44,293 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:44,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:44,507 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1466950278, now seen corresponding path program 1 times [2020-11-30 03:03:44,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:44,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444136357] [2020-11-30 03:03:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:44,526 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:03:44,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569597516] [2020-11-30 03:03:44,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:44,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:03:44,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-30 03:03:44,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-11-30 03:03:44,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444136357] [2020-11-30 03:03:44,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:03:44,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569597516] [2020-11-30 03:03:44,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:44,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 03:03:44,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076012244] [2020-11-30 03:03:44,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:44,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:44,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:44,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:44,791 INFO L87 Difference]: Start difference. First operand 803 states and 1125 transitions. Second operand 3 states. [2020-11-30 03:03:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:45,163 INFO L93 Difference]: Finished difference Result 1670 states and 2350 transitions. [2020-11-30 03:03:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:45,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-11-30 03:03:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:45,171 INFO L225 Difference]: With dead ends: 1670 [2020-11-30 03:03:45,171 INFO L226 Difference]: Without dead ends: 869 [2020-11-30 03:03:45,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-11-30 03:03:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 849. [2020-11-30 03:03:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-11-30 03:03:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1177 transitions. [2020-11-30 03:03:45,220 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1177 transitions. Word has length 193 [2020-11-30 03:03:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:45,220 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1177 transitions. [2020-11-30 03:03:45,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:45,221 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1177 transitions. [2020-11-30 03:03:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-30 03:03:45,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:45,225 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:45,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:45,447 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1201110280, now seen corresponding path program 1 times [2020-11-30 03:03:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:45,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989072576] [2020-11-30 03:03:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-11-30 03:03:45,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989072576] [2020-11-30 03:03:45,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:03:45,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:03:45,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184142739] [2020-11-30 03:03:45,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:03:45,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:03:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:03:45,615 INFO L87 Difference]: Start difference. First operand 849 states and 1177 transitions. Second operand 3 states. [2020-11-30 03:03:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:03:46,178 INFO L93 Difference]: Finished difference Result 1710 states and 2376 transitions. [2020-11-30 03:03:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:03:46,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-11-30 03:03:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:03:46,186 INFO L225 Difference]: With dead ends: 1710 [2020-11-30 03:03:46,186 INFO L226 Difference]: Without dead ends: 863 [2020-11-30 03:03:46,188 INFO L677 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 [2020-11-30 03:03:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-11-30 03:03:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 849. [2020-11-30 03:03:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-11-30 03:03:46,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1155 transitions. [2020-11-30 03:03:46,231 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1155 transitions. Word has length 217 [2020-11-30 03:03:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:03:46,232 INFO L481 AbstractCegarLoop]: Abstraction has 849 states and 1155 transitions. [2020-11-30 03:03:46,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:03:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1155 transitions. [2020-11-30 03:03:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-11-30 03:03:46,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:03:46,240 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:03:46,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-30 03:03:46,240 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:03:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:03:46,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1458630885, now seen corresponding path program 1 times [2020-11-30 03:03:46,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:03:46,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92799835] [2020-11-30 03:03:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:03:46,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:03:46,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913757987] [2020-11-30 03:03:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:03:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:03:46,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:03:46,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:03:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-11-30 03:03:46,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:03:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 442 proven. 25 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-11-30 03:03:46,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92799835] [2020-11-30 03:03:46,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:03:46,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913757987] [2020-11-30 03:03:46,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1686522573] [2020-11-30 03:03:46,637 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2020-11-30 03:03:46,638 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:03:46,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:03:46,652 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:03:46,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:03:47,408 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-11-30 03:03:47,790 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-11-30 03:03:48,182 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2020-11-30 03:03:48,540 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-11-30 03:03:48,667 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2020-11-30 03:03:48,944 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 260 [2020-11-30 03:03:49,157 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 271 [2020-11-30 03:03:49,473 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-11-30 03:03:50,251 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 179 [2020-11-30 03:03:50,679 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 192 [2020-11-30 03:03:50,844 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 204 [2020-11-30 03:03:51,055 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-11-30 03:03:51,269 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-11-30 03:03:52,185 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 205 [2020-11-30 03:03:52,328 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 218 [2020-11-30 03:03:52,893 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-11-30 03:03:53,368 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-11-30 03:03:53,980 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 267 [2020-11-30 03:03:54,140 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2020-11-30 03:03:55,543 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 239 [2020-11-30 03:03:55,673 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 249 [2020-11-30 03:03:56,154 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-11-30 03:03:56,809 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 253 [2020-11-30 03:03:57,098 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 212 [2020-11-30 03:03:58,632 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2020-11-30 03:03:59,744 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:03:59,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:03:59,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 03:03:59,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611201238] [2020-11-30 03:03:59,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:03:59,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:03:59,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:03:59,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:03:59,754 INFO L87 Difference]: Start difference. First operand 849 states and 1155 transitions. Second operand 6 states. [2020-11-30 03:04:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:00,844 INFO L93 Difference]: Finished difference Result 2580 states and 3496 transitions. [2020-11-30 03:04:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:04:00,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2020-11-30 03:04:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:00,857 INFO L225 Difference]: With dead ends: 2580 [2020-11-30 03:04:00,857 INFO L226 Difference]: Without dead ends: 1691 [2020-11-30 03:04:00,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:04:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-11-30 03:04:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1031. [2020-11-30 03:04:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-11-30 03:04:00,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1421 transitions. [2020-11-30 03:04:00,919 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1421 transitions. Word has length 238 [2020-11-30 03:04:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:00,919 INFO L481 AbstractCegarLoop]: Abstraction has 1031 states and 1421 transitions. [2020-11-30 03:04:00,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:04:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1421 transitions. [2020-11-30 03:04:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-11-30 03:04:00,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:00,925 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2020-11-30 03:04:01,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:01,145 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:01,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1391131163, now seen corresponding path program 1 times [2020-11-30 03:04:01,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:01,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423808745] [2020-11-30 03:04:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:01,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:01,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755991359] [2020-11-30 03:04:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:01,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 03:04:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 317 proven. 176 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-30 03:04:01,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 368 proven. 125 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-11-30 03:04:01,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423808745] [2020-11-30 03:04:01,754 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:01,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755991359] [2020-11-30 03:04:01,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853936312] [2020-11-30 03:04:01,764 INFO L159 IcfgInterpreter]: Started Sifa with 55 locations of interest [2020-11-30 03:04:01,764 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:04:01,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:04:01,765 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:04:01,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:04:02,176 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-11-30 03:04:02,780 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-30 03:04:02,983 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-30 03:04:03,565 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2020-11-30 03:04:04,414 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 255 [2020-11-30 03:04:04,905 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2020-11-30 03:04:05,016 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 254 [2020-11-30 03:04:05,218 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-11-30 03:04:06,096 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:04:06,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:04:06,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-30 03:04:06,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433777483] [2020-11-30 03:04:06,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 03:04:06,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:06,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 03:04:06,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:04:06,101 INFO L87 Difference]: Start difference. First operand 1031 states and 1421 transitions. Second operand 7 states. [2020-11-30 03:04:08,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:08,045 INFO L93 Difference]: Finished difference Result 3027 states and 4168 transitions. [2020-11-30 03:04:08,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 03:04:08,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-11-30 03:04:08,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:08,073 INFO L225 Difference]: With dead ends: 3027 [2020-11-30 03:04:08,074 INFO L226 Difference]: Without dead ends: 1387 [2020-11-30 03:04:08,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-11-30 03:04:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-11-30 03:04:08,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1316. [2020-11-30 03:04:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-11-30 03:04:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1788 transitions. [2020-11-30 03:04:08,186 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1788 transitions. Word has length 246 [2020-11-30 03:04:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:08,187 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1788 transitions. [2020-11-30 03:04:08,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 03:04:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1788 transitions. [2020-11-30 03:04:08,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-11-30 03:04:08,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:08,193 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:08,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable333 [2020-11-30 03:04:08,419 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:08,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2029218984, now seen corresponding path program 1 times [2020-11-30 03:04:08,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:08,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155011703] [2020-11-30 03:04:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 502 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2020-11-30 03:04:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155011703] [2020-11-30 03:04:08,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:04:08,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:04:08,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951251671] [2020-11-30 03:04:08,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:04:08,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:04:08,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:04:08,592 INFO L87 Difference]: Start difference. First operand 1316 states and 1788 transitions. Second operand 3 states. [2020-11-30 03:04:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:09,059 INFO L93 Difference]: Finished difference Result 2636 states and 3580 transitions. [2020-11-30 03:04:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:04:09,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2020-11-30 03:04:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:09,069 INFO L225 Difference]: With dead ends: 2636 [2020-11-30 03:04:09,069 INFO L226 Difference]: Without dead ends: 1322 [2020-11-30 03:04:09,071 INFO L677 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 [2020-11-30 03:04:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-11-30 03:04:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2020-11-30 03:04:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2020-11-30 03:04:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1758 transitions. [2020-11-30 03:04:09,139 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1758 transitions. Word has length 269 [2020-11-30 03:04:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:09,139 INFO L481 AbstractCegarLoop]: Abstraction has 1316 states and 1758 transitions. [2020-11-30 03:04:09,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:04:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1758 transitions. [2020-11-30 03:04:09,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-11-30 03:04:09,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:09,149 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:09,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2020-11-30 03:04:09,149 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:09,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:09,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1275018760, now seen corresponding path program 1 times [2020-11-30 03:04:09,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:09,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740137285] [2020-11-30 03:04:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:09,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:09,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349025756] [2020-11-30 03:04:09,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:09,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:04:09,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-11-30 03:04:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 616 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2020-11-30 03:04:09,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740137285] [2020-11-30 03:04:09,492 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:09,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349025756] [2020-11-30 03:04:09,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:04:09,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 03:04:09,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619270265] [2020-11-30 03:04:09,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:04:09,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:04:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:04:09,495 INFO L87 Difference]: Start difference. First operand 1316 states and 1758 transitions. Second operand 3 states. [2020-11-30 03:04:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:09,845 INFO L93 Difference]: Finished difference Result 2732 states and 3661 transitions. [2020-11-30 03:04:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:04:09,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-11-30 03:04:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:09,854 INFO L225 Difference]: With dead ends: 2732 [2020-11-30 03:04:09,854 INFO L226 Difference]: Without dead ends: 1418 [2020-11-30 03:04:09,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:04:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2020-11-30 03:04:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1412. [2020-11-30 03:04:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2020-11-30 03:04:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1863 transitions. [2020-11-30 03:04:09,916 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1863 transitions. Word has length 300 [2020-11-30 03:04:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:09,917 INFO L481 AbstractCegarLoop]: Abstraction has 1412 states and 1863 transitions. [2020-11-30 03:04:09,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:04:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1863 transitions. [2020-11-30 03:04:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-11-30 03:04:09,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:09,924 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:10,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:10,151 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:10,151 INFO L82 PathProgramCache]: Analyzing trace with hash 427183465, now seen corresponding path program 1 times [2020-11-30 03:04:10,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:10,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248923429] [2020-11-30 03:04:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:10,169 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:10,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943118199] [2020-11-30 03:04:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:10,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:04:10,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2020-11-30 03:04:10,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:16,786 WARN L193 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 42 DAG size of output: 7 [2020-11-30 03:04:17,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 846 trivial. 0 not checked. [2020-11-30 03:04:17,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248923429] [2020-11-30 03:04:17,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:17,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943118199] [2020-11-30 03:04:17,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [170567929] [2020-11-30 03:04:17,165 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2020-11-30 03:04:17,165 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:04:17,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:04:17,165 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:04:17,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:04:18,486 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-11-30 03:04:19,040 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 269 [2020-11-30 03:04:19,192 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-11-30 03:04:23,548 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 242 [2020-11-30 03:04:25,962 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:04:25,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:04:25,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2020-11-30 03:04:25,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34073976] [2020-11-30 03:04:25,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:04:25,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:25,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:04:25,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:04:25,965 INFO L87 Difference]: Start difference. First operand 1412 states and 1863 transitions. Second operand 8 states. [2020-11-30 03:04:26,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:26,215 INFO L93 Difference]: Finished difference Result 2892 states and 3805 transitions. [2020-11-30 03:04:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:04:26,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-11-30 03:04:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:26,232 INFO L225 Difference]: With dead ends: 2892 [2020-11-30 03:04:26,232 INFO L226 Difference]: Without dead ends: 2381 [2020-11-30 03:04:26,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 649 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:04:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-11-30 03:04:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1962. [2020-11-30 03:04:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-11-30 03:04:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2603 transitions. [2020-11-30 03:04:26,340 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2603 transitions. Word has length 330 [2020-11-30 03:04:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:26,341 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2603 transitions. [2020-11-30 03:04:26,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:04:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2603 transitions. [2020-11-30 03:04:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-11-30 03:04:26,347 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:26,349 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 4, 4, 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] [2020-11-30 03:04:26,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable485 [2020-11-30 03:04:26,563 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -860421164, now seen corresponding path program 1 times [2020-11-30 03:04:26,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:26,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967506851] [2020-11-30 03:04:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:26,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:26,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546960817] [2020-11-30 03:04:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:26,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:04:26,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1068 proven. 691 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2020-11-30 03:04:27,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2603 backedges. 1191 proven. 568 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2020-11-30 03:04:27,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967506851] [2020-11-30 03:04:27,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:27,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546960817] [2020-11-30 03:04:27,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1775192389] [2020-11-30 03:04:27,498 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2020-11-30 03:04:27,498 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:04:27,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:04:27,500 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:04:27,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:04:28,703 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 235 [2020-11-30 03:04:29,059 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-11-30 03:04:29,227 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 269 [2020-11-30 03:04:36,607 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 03:04:36,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:04:36,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-30 03:04:36,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11264978] [2020-11-30 03:04:36,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 03:04:36,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:36,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 03:04:36,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-30 03:04:36,610 INFO L87 Difference]: Start difference. First operand 1962 states and 2603 transitions. Second operand 11 states. [2020-11-30 03:04:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:39,108 INFO L93 Difference]: Finished difference Result 4642 states and 6047 transitions. [2020-11-30 03:04:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 03:04:39,110 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 468 [2020-11-30 03:04:39,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:39,126 INFO L225 Difference]: With dead ends: 4642 [2020-11-30 03:04:39,126 INFO L226 Difference]: Without dead ends: 2568 [2020-11-30 03:04:39,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-11-30 03:04:39,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2020-11-30 03:04:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 917. [2020-11-30 03:04:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-11-30 03:04:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1189 transitions. [2020-11-30 03:04:39,199 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1189 transitions. Word has length 468 [2020-11-30 03:04:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:39,200 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1189 transitions. [2020-11-30 03:04:39,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 03:04:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1189 transitions. [2020-11-30 03:04:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-11-30 03:04:39,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:39,207 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 21, 21, 21, 19, 19, 17, 17, 15, 15, 13, 13, 13, 13, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:39,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable733,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:39,430 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash 506778596, now seen corresponding path program 1 times [2020-11-30 03:04:39,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:39,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419654883] [2020-11-30 03:04:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:39,461 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:39,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980555045] [2020-11-30 03:04:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:39,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 03:04:39,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5098 backedges. 2749 proven. 0 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2020-11-30 03:04:39,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5098 backedges. 2749 proven. 0 refuted. 0 times theorem prover too weak. 2349 trivial. 0 not checked. [2020-11-30 03:04:40,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419654883] [2020-11-30 03:04:40,204 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:40,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980555045] [2020-11-30 03:04:40,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:04:40,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:04:40,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996177267] [2020-11-30 03:04:40,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:04:40,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:04:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:40,206 INFO L87 Difference]: Start difference. First operand 917 states and 1189 transitions. Second operand 4 states. [2020-11-30 03:04:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:40,556 INFO L93 Difference]: Finished difference Result 1834 states and 2378 transitions. [2020-11-30 03:04:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:04:40,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 632 [2020-11-30 03:04:40,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:40,563 INFO L225 Difference]: With dead ends: 1834 [2020-11-30 03:04:40,563 INFO L226 Difference]: Without dead ends: 919 [2020-11-30 03:04:40,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1260 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-11-30 03:04:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 917. [2020-11-30 03:04:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2020-11-30 03:04:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1181 transitions. [2020-11-30 03:04:40,616 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1181 transitions. Word has length 632 [2020-11-30 03:04:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:40,617 INFO L481 AbstractCegarLoop]: Abstraction has 917 states and 1181 transitions. [2020-11-30 03:04:40,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:04:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1181 transitions. [2020-11-30 03:04:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-11-30 03:04:40,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:40,623 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 22, 22, 22, 20, 20, 18, 18, 16, 16, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:40,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1043,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:40,838 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:40,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1290692652, now seen corresponding path program 2 times [2020-11-30 03:04:40,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:40,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512186400] [2020-11-30 03:04:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:40,877 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:40,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705919764] [2020-11-30 03:04:40,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:41,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-11-30 03:04:41,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 03:04:41,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 03:04:41,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5539 backedges. 3065 proven. 0 refuted. 0 times theorem prover too weak. 2474 trivial. 0 not checked. [2020-11-30 03:04:41,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5539 backedges. 3065 proven. 0 refuted. 0 times theorem prover too weak. 2474 trivial. 0 not checked. [2020-11-30 03:04:41,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512186400] [2020-11-30 03:04:41,667 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:41,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705919764] [2020-11-30 03:04:41,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:04:41,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:04:41,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001601177] [2020-11-30 03:04:41,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:04:41,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:41,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:04:41,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:41,670 INFO L87 Difference]: Start difference. First operand 917 states and 1181 transitions. Second operand 4 states. [2020-11-30 03:04:42,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:42,150 INFO L93 Difference]: Finished difference Result 1848 states and 2381 transitions. [2020-11-30 03:04:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:04:42,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 660 [2020-11-30 03:04:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:42,156 INFO L225 Difference]: With dead ends: 1848 [2020-11-30 03:04:42,156 INFO L226 Difference]: Without dead ends: 929 [2020-11-30 03:04:42,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1318 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-11-30 03:04:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2020-11-30 03:04:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-11-30 03:04:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1195 transitions. [2020-11-30 03:04:42,231 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1195 transitions. Word has length 660 [2020-11-30 03:04:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:42,232 INFO L481 AbstractCegarLoop]: Abstraction has 929 states and 1195 transitions. [2020-11-30 03:04:42,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:04:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1195 transitions. [2020-11-30 03:04:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-11-30 03:04:42,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:04:42,243 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 20, 20, 18, 18, 16, 16, 14, 14, 14, 14, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:04:42,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1044 [2020-11-30 03:04:42,459 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:04:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:04:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1858074578, now seen corresponding path program 1 times [2020-11-30 03:04:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:04:42,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605034233] [2020-11-30 03:04:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:04:42,503 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:04:42,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902968375] [2020-11-30 03:04:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:04:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:04:42,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1047 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 03:04:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:04:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5681 backedges. 3075 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2020-11-30 03:04:43,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:04:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5681 backedges. 3075 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2020-11-30 03:04:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605034233] [2020-11-30 03:04:43,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:04:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902968375] [2020-11-30 03:04:43,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:04:43,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:04:43,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683621602] [2020-11-30 03:04:43,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:04:43,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:04:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:04:43,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:43,332 INFO L87 Difference]: Start difference. First operand 929 states and 1195 transitions. Second operand 4 states. [2020-11-30 03:04:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:04:43,955 INFO L93 Difference]: Finished difference Result 1407 states and 1809 transitions. [2020-11-30 03:04:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:04:43,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 672 [2020-11-30 03:04:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:04:43,957 INFO L225 Difference]: With dead ends: 1407 [2020-11-30 03:04:43,957 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:04:43,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1340 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:04:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:04:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:04:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:04:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:04:43,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 672 [2020-11-30 03:04:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:04:43,959 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:04:43,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:04:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:04:43,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:04:44,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1045 [2020-11-30 03:04:44,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:04:44,475 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 169 [2020-11-30 03:04:44,811 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 169 [2020-11-30 03:04:45,192 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 172 [2020-11-30 03:04:45,529 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 169 [2020-11-30 03:04:45,999 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-11-30 03:04:46,510 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-30 03:04:47,916 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 147 DAG size of output: 65 [2020-11-30 03:04:48,478 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-11-30 03:04:49,457 WARN L193 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 49 [2020-11-30 03:04:51,036 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 147 DAG size of output: 65 [2020-11-30 03:04:51,535 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 24 [2020-11-30 03:04:52,008 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 19 [2020-11-30 03:04:52,627 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-11-30 03:04:53,375 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-11-30 03:04:54,098 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-11-30 03:04:55,248 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2020-11-30 03:04:57,155 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 149 DAG size of output: 66 [2020-11-30 03:04:58,253 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2020-11-30 03:04:58,994 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-30 03:04:59,712 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-11-30 03:05:00,449 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-11-30 03:05:00,790 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 17 [2020-11-30 03:05:03,125 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2020-11-30 03:05:04,269 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-11-30 03:05:06,855 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 147 DAG size of output: 65 [2020-11-30 03:05:08,113 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2020-11-30 03:05:09,277 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-11-30 03:05:09,281 INFO L274 CegarLoopResult]: For program point L630(lines 630 639) no Hoare annotation was computed. [2020-11-30 03:05:09,281 INFO L274 CegarLoopResult]: For program point L630-2(lines 629 651) no Hoare annotation was computed. [2020-11-30 03:05:09,281 INFO L270 CegarLoopResult]: At program point L399(lines 390 421) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2020-11-30 03:05:09,281 INFO L270 CegarLoopResult]: At program point L168(lines 167 606) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0)) (.cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not .cse1)) (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse1 .cse0))) [2020-11-30 03:05:09,281 INFO L270 CegarLoopResult]: At program point L135(lines 128 619) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4)) (.cse10 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (or (and .cse0 .cse1 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))))) [2020-11-30 03:05:09,281 INFO L274 CegarLoopResult]: For program point L367(lines 367 371) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L632(lines 632 636) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L401(lines 401 407) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L270 CegarLoopResult]: At program point L203(lines 203 594) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)))) (or (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673)) .cse0))) [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L170(lines 170 605) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L137(lines 137 616) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L270 CegarLoopResult]: At program point L104(lines 104 627) the Hoare annotation is: (let ((.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse4 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and .cse1 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 3)) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse0) (and .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2 .cse4) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not .cse2)) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L468(lines 468 472) no Hoare annotation was computed. [2020-11-30 03:05:09,282 INFO L270 CegarLoopResult]: At program point L204(lines 200 595) the Hoare annotation is: (let ((.cse0 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0))) (or (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672) .cse0) (and .cse0 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,282 INFO L274 CegarLoopResult]: For program point L503-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L239(lines 239 244) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L173(lines 173 604) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L140(lines 140 615) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L107(lines 107 626) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L270 CegarLoopResult]: At program point L174(lines 170 605) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse6 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse8 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse8 .cse3 .cse4 .cse5 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,283 INFO L270 CegarLoopResult]: At program point L141(lines 137 616) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1) .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0))) (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L274(lines 274 278) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L308-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L176(lines 176 603) no Hoare annotation was computed. [2020-11-30 03:05:09,283 INFO L274 CegarLoopResult]: For program point L143(lines 143 614) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L110(lines 110 625) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L441-1(lines 441 453) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L270 CegarLoopResult]: At program point L409(lines 400 420) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L343-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L277 CegarLoopResult]: At program point L674(lines 66 676) the Hoare annotation is: true [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L542(lines 542 547) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L179(lines 179 602) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L146(lines 146 613) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L113(lines 113 624) no Hoare annotation was computed. [2020-11-30 03:05:09,284 INFO L274 CegarLoopResult]: For program point L444(lines 444 449) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L270 CegarLoopResult]: At program point L180(lines 176 603) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse6 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse8 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse8 .cse3 .cse4 .cse5 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,285 INFO L270 CegarLoopResult]: At program point L147(lines 143 614) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse9 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L412(lines 412 416) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L270 CegarLoopResult]: At program point L214(lines 107 626) the Hoare annotation is: (let ((.cse0 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)))) (or (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544)) .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8656)) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (or (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse0) (and .cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))))) [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L182(lines 182 601) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L149(lines 149 612) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L116(lines 116 623) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L480(lines 480 484) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L85-1(lines 66 676) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:05:09,285 INFO L274 CegarLoopResult]: For program point L185(lines 185 600) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L152(lines 152 611) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L119(lines 119 622) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L351(lines 351 382) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L270 CegarLoopResult]: At program point L186(lines 182 601) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse6 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (< ULTIMATE.start_ssl3_accept_~s__state~0 8640)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse8 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse6 .cse1 .cse2 .cse7 .cse8 .cse3 .cse4 .cse5 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,286 INFO L270 CegarLoopResult]: At program point L153(lines 149 612) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse6 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse8 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse6 .cse1 .cse7 .cse8 .cse2 .cse3 .cse4 .cse5 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L219-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L188(lines 188 599) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L155(lines 155 610) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L122(lines 122 621) no Hoare annotation was computed. [2020-11-30 03:05:09,286 INFO L274 CegarLoopResult]: For program point L552(lines 552 556) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L354(lines 354 381) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L354-1(lines 354 381) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L270 CegarLoopResult]: At program point L123(lines 119 622) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse7 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576))) (or (and .cse0 (< ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8640) .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,287 INFO L270 CegarLoopResult]: At program point L553(lines 66 676) the Hoare annotation is: false [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L355(lines 355 378) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L256(lines 256 268) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L257(lines 257 262) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L191(lines 191 598) no Hoare annotation was computed. [2020-11-30 03:05:09,287 INFO L274 CegarLoopResult]: For program point L158(lines 158 609) no Hoare annotation was computed. [2020-11-30 03:05:09,288 INFO L270 CegarLoopResult]: At program point L125(lines 125 620) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0)) (.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481))) (.cse3 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672))) (or (and .cse0 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0)) (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse1 (not .cse2)) (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) .cse0 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse1 .cse3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse4 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464)) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) (or (and (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0) .cse2) (and .cse4 .cse2))) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) .cse0 .cse5 .cse4 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) .cse1 .cse3) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-11-30 03:05:09,288 INFO L274 CegarLoopResult]: For program point L390(lines 390 421) no Hoare annotation was computed. [2020-11-30 03:05:09,288 INFO L274 CegarLoopResult]: For program point L291-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,288 INFO L270 CegarLoopResult]: At program point L192(lines 188 599) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse5 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse7 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse8 (< ULTIMATE.start_ssl3_accept_~s__state~0 8656)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse5 .cse1 .cse6 .cse7 .cse2 .cse3 .cse4 .cse8 .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,288 INFO L270 CegarLoopResult]: At program point L159(lines 155 610) the Hoare annotation is: (let ((.cse0 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse2 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))) (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) [2020-11-30 03:05:09,288 INFO L274 CegarLoopResult]: For program point L523(lines 523 528) no Hoare annotation was computed. [2020-11-30 03:05:09,288 INFO L274 CegarLoopResult]: For program point L391(lines 391 397) no Hoare annotation was computed. [2020-11-30 03:05:09,288 INFO L274 CegarLoopResult]: For program point L358(lines 358 377) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L270 CegarLoopResult]: At program point L590(lines 101 658) the Hoare annotation is: (let ((.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse4 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and .cse1 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 3)) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse0) (and .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2 .cse4) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not .cse2)) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L557(lines 557 561) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L491(lines 491 495) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L359-2(lines 358 375) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L194(lines 194 597) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L161(lines 161 608) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L128(lines 128 619) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L459(lines 459 463) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L327-1(lines 327 336) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L277 CegarLoopResult]: At program point L659(lines 100 660) the Hoare annotation is: true [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L197(lines 197 596) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L164(lines 164 607) no Hoare annotation was computed. [2020-11-30 03:05:09,289 INFO L274 CegarLoopResult]: For program point L131(lines 131 618) no Hoare annotation was computed. [2020-11-30 03:05:09,290 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 03:05:09,290 INFO L274 CegarLoopResult]: For program point L231(lines 231 248) no Hoare annotation was computed. [2020-11-30 03:05:09,290 INFO L270 CegarLoopResult]: At program point L198(lines 194 597) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8673))) (.cse1 (< 8641 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= 12292 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481))) (.cse6 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672) (or (and .cse0 (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse5 .cse6 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,290 INFO L270 CegarLoopResult]: At program point L165(lines 161 608) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse1 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse3 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse4 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse5 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse6 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 .cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) .cse7 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse7 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,290 INFO L274 CegarLoopResult]: For program point L231-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,290 INFO L274 CegarLoopResult]: For program point L628(lines 628 656) no Hoare annotation was computed. [2020-11-30 03:05:09,290 INFO L274 CegarLoopResult]: For program point L331(lines 331 335) no Hoare annotation was computed. [2020-11-30 03:05:09,295 INFO L274 CegarLoopResult]: For program point L629(lines 629 653) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L530-2(lines 211 589) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L431(lines 431 435) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L270 CegarLoopResult]: At program point L365(lines 348 383) the Hoare annotation is: (let ((.cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545))) (.cse6 (not (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse1 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480))) (.cse7 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8544))) (.cse8 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse2 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse3 (not (= 8560 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse4 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561))) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576)) (.cse9 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)))) (or (and .cse0 (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8512)) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0) (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse6 .cse1 .cse7 .cse8 .cse2 .cse3 .cse4 .cse5 (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) .cse9 (not (= ULTIMATE.start_ssl3_accept_~s__hit~0 0))))) [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L233(lines 233 238) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L200(lines 200 595) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L167(lines 167 606) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L274 CegarLoopResult]: For program point L134(lines 134 617) no Hoare annotation was computed. [2020-11-30 03:05:09,296 INFO L270 CegarLoopResult]: At program point L101-2(lines 101 658) the Hoare annotation is: (let ((.cse3 (not (= 8448 ULTIMATE.start_ssl3_accept_~s__state~0))) (.cse0 (= 2 ULTIMATE.start_ssl3_accept_~blastFlag~0)) (.cse1 (= 3 ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0)) (.cse4 (<= 8448 ULTIMATE.start_ssl3_accept_~s__state~0)) (.cse2 (= ULTIMATE.start_ssl3_accept_~s__hit~0 0)) (.cse5 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8672))) (or (and (<= ULTIMATE.start_ssl3_accept_~s__s3__tmp__next_state___0~0 8576) (<= ULTIMATE.start_ssl3_accept_~s__state~0 8576) .cse0) (and .cse1 .cse2 (<= ULTIMATE.start_ssl3_accept_~s__state~0 3)) (and (= 8496 ULTIMATE.start_ssl3_accept_~s__state~0) (= ULTIMATE.start_ssl3_accept_~blastFlag~0 1)) (= ULTIMATE.start_ssl3_accept_~s__state~0 3) (and (= ULTIMATE.start_ssl3_accept_~blastFlag~0 0) .cse3 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8464) .cse4) (and (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8545)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8480)) .cse5 .cse3 (not (= 8497 ULTIMATE.start_ssl3_accept_~s__state~0)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8561)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8657)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8672)) (not (= ULTIMATE.start_ssl3_accept_~s__state~0 8481)) .cse0) (and .cse1 (<= ULTIMATE.start_ssl3_accept_~s__state~0 8448) .cse2 .cse4) (and (< ULTIMATE.start_ssl3_accept_~blastFlag~0 4) (not .cse2)) (and (= 3 ULTIMATE.start_ssl3_accept_~blastFlag~0) .cse5 (<= 8672 ULTIMATE.start_ssl3_accept_~s__state~0)))) [2020-11-30 03:05:09,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:05:09 BoogieIcfgContainer [2020-11-30 03:05:09,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:05:09,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:05:09,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:05:09,376 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:05:09,377 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:03:33" (3/4) ... [2020-11-30 03:05:09,380 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:05:09,396 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-11-30 03:05:09,398 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 03:05:09,399 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:05:09,400 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:05:09,526 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e16cf8e4-2e64-47a2-9f4d-26b9a99a073d/bin/utaipan/witness.graphml [2020-11-30 03:05:09,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:05:09,528 INFO L168 Benchmark]: Toolchain (without parser) took 98664.03 ms. Allocated memory was 98.6 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 65.5 MB in the beginning and 1.1 GB in the end (delta: -999.9 MB). Peak memory consumption was 411.3 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,528 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 31.1 MB in the beginning and 31.1 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:05:09,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.20 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 70.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.26 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 68.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,531 INFO L168 Benchmark]: Boogie Preprocessor took 67.59 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 65.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,532 INFO L168 Benchmark]: RCFGBuilder took 1702.74 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.9 MB in the beginning and 84.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,533 INFO L168 Benchmark]: TraceAbstraction took 96200.93 ms. Allocated memory was 119.5 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 83.6 MB in the beginning and 1.1 GB in the end (delta: -994.3 MB). Peak memory consumption was 911.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,533 INFO L168 Benchmark]: Witness Printer took 150.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:05:09,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory was 31.1 MB in the beginning and 31.1 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.20 ms. Allocated memory is still 98.6 MB. Free memory was 65.3 MB in the beginning and 70.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.26 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 68.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.59 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 65.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1702.74 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.9 MB in the beginning and 84.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 96200.93 ms. Allocated memory was 119.5 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 83.6 MB in the beginning and 1.1 GB in the end (delta: -994.3 MB). Peak memory consumption was 911.2 MB. Max. memory is 16.1 GB. * Witness Printer took 150.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 400]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((!(8496 == s__state) && !(s__state == 8512)) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag) || ((3 == s__s3__tmp__next_state___0 && s__hit == 0) && s__state <= 3)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || (((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) && 8448 <= s__state)) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (((3 == s__s3__tmp__next_state___0 && s__state <= 8448) && s__hit == 0) && 8448 <= s__state)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) - InvariantResult [Line: 348]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 128]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || (8448 <= s__state && ((((((((((((!(s__state == 8545) && !(8496 == s__state)) && blastFlag == 0) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && 2 == blastFlag))) - InvariantResult [Line: 104]: Loop Invariant Derived loop invariant: (((((((((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag) || ((3 == s__s3__tmp__next_state___0 && s__hit == 0) && s__state <= 3)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || (((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) && 8448 <= s__state)) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (((3 == s__s3__tmp__next_state___0 && s__state <= 8448) && s__hit == 0) && 8448 <= s__state)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) - InvariantResult [Line: 167]: Loop Invariant Derived loop invariant: ((((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8448) && 8448 <= s__state) && 2 == blastFlag) || ((s__state <= 8464 && blastFlag < 4) && !(s__hit == 0))) || ((3 == s__s3__tmp__next_state___0 && s__hit == 0) && s__state <= 8464) - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) || (((8672 <= s__state && !(12292 == s__state)) && blastFlag < 4) && !(s__hit == 0)) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 161]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8512)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && s__s3__tmp__next_state___0 < 8640) && !(8496 == s__state)) && !(s__state == 8512)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && 2 == blastFlag) || (((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__hit == 0)) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: (s__state <= 8672 && ((((((((!(s__state == 8673) && 3 == blastFlag) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && !(s__state == 8481)) && !(s__state == 8672)) || (((((((!(s__state == 8673) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && !(s__state == 8481)) && !(s__state == 8672)) && 2 == blastFlag))) || ((((((((!(s__state == 8673) && 8641 < s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(12292 == s__state)) && blastFlag < 4) && !(s__state == 8481)) && !(s__state == 8672)) && !(s__hit == 0)) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: ((((((((((!(s__state == 8480) && !(12292 == s__state)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((s__s3__tmp__next_state___0 <= 8576 && !(s__state == 8480)) && s__state <= 8576) && !(s__state == 8481)) && 2 == blastFlag)) || ((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464)) || (8496 == s__state && blastFlag == 1)) || (s__state <= 8448 && ((3 == s__s3__tmp__next_state___0 && s__hit == 0) || (!(8448 == s__state) && s__hit == 0)))) || s__state == 3) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 176]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((!(8496 == s__state) && !(s__state == 8512)) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 188]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && s__state < 8656) && !(s__state == 8481)) || ((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state < 8656) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((blastFlag < 4 && !(s__state == 8672)) && !(s__hit == 0)) || (!(s__state == 8673) && !(s__state == 8672)) - InvariantResult [Line: 107]: Loop Invariant Derived loop invariant: ((((((((((((((!(s__state == 8545) && !(s__state == 8673)) && !(s__state == 8480)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && blastFlag < 4) && !(s__state == 8672)) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) && !(s__state == 8656)) && !(s__hit == 0)) || (s__state <= 8448 && ((blastFlag == 0 && !(8448 == s__state)) || (!(8448 == s__state) && 2 == blastFlag))) - InvariantResult [Line: 137]: Loop Invariant Derived loop invariant: (((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && blastFlag == 1) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && !(s__state == 8481)) || ((((((((!(s__state == 8545) && !(s__state == 8480)) && !(s__state == 8544)) && !(8448 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && !(s__state == 8481)) && 2 == blastFlag)) && 8448 <= s__state) - InvariantResult [Line: 101]: Loop Invariant Derived loop invariant: (((((((((s__s3__tmp__next_state___0 <= 8576 && s__state <= 8576) && 2 == blastFlag) || ((3 == s__s3__tmp__next_state___0 && s__hit == 0) && s__state <= 3)) || (8496 == s__state && blastFlag == 1)) || s__state == 3) || (((blastFlag == 0 && !(8448 == s__state)) && s__state <= 8464) && 8448 <= s__state)) || (((((((((!(s__state == 8545) && !(s__state == 8480)) && s__state <= 8672) && !(8448 == s__state)) && !(8497 == s__state)) && !(s__state == 8561)) && !(s__state == 8657)) && !(s__state == 8672)) && !(s__state == 8481)) && 2 == blastFlag)) || (((3 == s__s3__tmp__next_state___0 && s__state <= 8448) && s__hit == 0) && 8448 <= s__state)) || (blastFlag < 4 && !(s__hit == 0))) || ((3 == blastFlag && s__state <= 8672) && 8672 <= s__state) - InvariantResult [Line: 170]: Loop Invariant Derived loop invariant: ((((((((((((!(s__state == 8545) && !(s__state == 8512)) && !(s__state == 8480)) && s__state < 8640) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && 8448 <= s__state) && 2 == blastFlag) && !(8496 == s__state)) && !(s__state == 8544)) && !(8448 == s__state)) && !(s__state == 8481)) || (((((((((((!(s__state == 8545) && !(8496 == s__state)) && !(s__state == 8480)) && s__state < 8640) && !(s__state == 8544)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: (((((((((!(8496 == s__state) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && blastFlag < 4) && !(s__state == 8481)) && !(s__hit == 0)) || ((((((((((!(8496 == s__state) && !(s__state == 8512)) && !(s__state == 8480)) && !(8448 == s__state)) && !(8497 == s__state)) && !(8560 == s__state)) && !(s__state == 8561)) && s__state <= 8576) && 8448 <= s__state) && !(s__state == 8481)) && 2 == blastFlag) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 70.9s, OverallIterations: 30, TraceHistogramMax: 25, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 25.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3922 SDtfs, 4133 SDslu, 3182 SDs, 0 SdLazy, 5247 SolverSat, 1250 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8608 GetRequests, 8524 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1962occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 30 MinimizatonAttempts, 2965 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 26 PreInvPairs, 306 NumberOfFragments, 2097 HoareAnnotationTreeSize, 26 FomulaSimplifications, 142435 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 26 FomulaSimplificationsInter, 31215 FormulaSimplificationTreeSizeReductionInter, 23.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 6130 NumberOfCodeBlocks, 5853 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 10367 ConstructedInterpolants, 0 QuantifiedInterpolants, 6536611 SizeOfPredicates, 27 NumberOfNonLiveVariables, 6833 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 44 InterpolantComputations, 34 PerfectInterpolantSequences, 46740/49476 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...