./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label47.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 263f5bcc0dd18a6a1141604b5838ae66dccd2a0e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:15:36,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:15:36,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:15:36,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:15:36,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:15:36,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:15:36,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:15:36,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:15:36,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:15:36,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:15:36,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:15:36,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:15:36,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:15:36,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:15:36,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:15:36,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:15:36,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:15:36,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:15:36,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:15:36,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:15:36,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:15:36,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:15:36,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:15:36,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:15:36,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:15:36,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:15:36,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:15:36,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:15:36,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:15:36,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:15:36,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:15:36,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:15:36,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:15:36,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:15:36,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:15:36,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:15:36,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:15:36,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:15:36,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:15:36,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:15:36,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:15:36,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:15:36,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:15:36,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:15:36,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:15:36,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:15:36,139 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:15:36,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:15:36,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:15:36,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:15:36,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:15:36,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:15:36,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:15:36,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:15:36,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:15:36,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:15:36,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:15:36,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:15:36,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:15:36,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:15:36,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:15:36,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:15:36,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:15:36,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:15:36,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:15:36,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:15:36,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:15:36,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:15:36,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:15:36,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:15:36,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:15:36,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 -> 263f5bcc0dd18a6a1141604b5838ae66dccd2a0e [2019-11-28 16:15:36,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:15:36,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:15:36,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:15:36,486 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:15:36,486 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:15:36,487 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2019-11-28 16:15:36,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a056de2e8/bfa6fc8703344c5a9113892372c69e82/FLAG46d0a9836 [2019-11-28 16:15:37,207 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:15:37,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2019-11-28 16:15:37,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a056de2e8/bfa6fc8703344c5a9113892372c69e82/FLAG46d0a9836 [2019-11-28 16:15:37,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a056de2e8/bfa6fc8703344c5a9113892372c69e82 [2019-11-28 16:15:37,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:15:37,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:15:37,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:15:37,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:15:37,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:15:37,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:15:37" (1/1) ... [2019-11-28 16:15:37,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e3592a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:37, skipping insertion in model container [2019-11-28 16:15:37,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:15:37" (1/1) ... [2019-11-28 16:15:37,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:15:37,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:15:38,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:15:38,085 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:15:38,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:15:38,259 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:15:38,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38 WrapperNode [2019-11-28 16:15:38,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:15:38,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:15:38,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:15:38,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:15:38,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:15:38,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:15:38,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:15:38,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:15:38,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... [2019-11-28 16:15:38,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:15:38,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:15:38,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:15:38,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:15:38,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:38,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:15:38,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:15:40,139 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:15:40,139 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-28 16:15:40,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:15:40 BoogieIcfgContainer [2019-11-28 16:15:40,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:15:40,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:15:40,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:15:40,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:15:40,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:15:37" (1/3) ... [2019-11-28 16:15:40,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fef595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:15:40, skipping insertion in model container [2019-11-28 16:15:40,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:15:38" (2/3) ... [2019-11-28 16:15:40,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fef595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:15:40, skipping insertion in model container [2019-11-28 16:15:40,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:15:40" (3/3) ... [2019-11-28 16:15:40,156 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label47.c [2019-11-28 16:15:40,168 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:15:40,177 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:15:40,194 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:15:40,243 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:15:40,244 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:15:40,244 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:15:40,245 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:15:40,245 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:15:40,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:15:40,247 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:15:40,247 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:15:40,284 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2019-11-28 16:15:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-28 16:15:40,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:40,298 INFO L410 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] [2019-11-28 16:15:40,299 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:40,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2019-11-28 16:15:40,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:40,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953829339] [2019-11-28 16:15:40,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:15:40,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953829339] [2019-11-28 16:15:40,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:15:40,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:15:40,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823359350] [2019-11-28 16:15:40,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:15:40,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:40,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:15:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:40,754 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 4 states. [2019-11-28 16:15:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:42,604 INFO L93 Difference]: Finished difference Result 850 states and 1558 transitions. [2019-11-28 16:15:42,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:15:42,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-28 16:15:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:42,633 INFO L225 Difference]: With dead ends: 850 [2019-11-28 16:15:42,633 INFO L226 Difference]: Without dead ends: 538 [2019-11-28 16:15:42,644 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-28 16:15:42,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-11-28 16:15:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-11-28 16:15:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 796 transitions. [2019-11-28 16:15:42,735 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 796 transitions. Word has length 33 [2019-11-28 16:15:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:42,735 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 796 transitions. [2019-11-28 16:15:42,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:15:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 796 transitions. [2019-11-28 16:15:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-28 16:15:42,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:42,741 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:42,741 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:42,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1915270461, now seen corresponding path program 1 times [2019-11-28 16:15:42,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:42,742 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730759125] [2019-11-28 16:15:42,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:15:42,896 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730759125] [2019-11-28 16:15:42,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:15:42,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:15:42,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690242176] [2019-11-28 16:15:42,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:15:42,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:42,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:15:42,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:42,904 INFO L87 Difference]: Start difference. First operand 538 states and 796 transitions. Second operand 4 states. [2019-11-28 16:15:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:44,338 INFO L93 Difference]: Finished difference Result 2142 states and 3176 transitions. [2019-11-28 16:15:44,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:15:44,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-11-28 16:15:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:44,352 INFO L225 Difference]: With dead ends: 2142 [2019-11-28 16:15:44,353 INFO L226 Difference]: Without dead ends: 1606 [2019-11-28 16:15:44,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2019-11-28 16:15:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2019-11-28 16:15:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2019-11-28 16:15:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1939 transitions. [2019-11-28 16:15:44,411 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1939 transitions. Word has length 108 [2019-11-28 16:15:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:44,412 INFO L462 AbstractCegarLoop]: Abstraction has 1428 states and 1939 transitions. [2019-11-28 16:15:44,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:15:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1939 transitions. [2019-11-28 16:15:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-28 16:15:44,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:44,420 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:44,420 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1105444071, now seen corresponding path program 1 times [2019-11-28 16:15:44,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:44,421 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384542154] [2019-11-28 16:15:44,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-28 16:15:44,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384542154] [2019-11-28 16:15:44,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:15:44,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 16:15:44,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678660229] [2019-11-28 16:15:44,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:15:44,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:44,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:15:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:44,658 INFO L87 Difference]: Start difference. First operand 1428 states and 1939 transitions. Second operand 4 states. [2019-11-28 16:15:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:46,040 INFO L93 Difference]: Finished difference Result 4634 states and 6198 transitions. [2019-11-28 16:15:46,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:15:46,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2019-11-28 16:15:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:46,057 INFO L225 Difference]: With dead ends: 4634 [2019-11-28 16:15:46,057 INFO L226 Difference]: Without dead ends: 3208 [2019-11-28 16:15:46,061 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:15:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-28 16:15:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-28 16:15:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3806 transitions. [2019-11-28 16:15:46,127 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3806 transitions. Word has length 209 [2019-11-28 16:15:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:46,127 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3806 transitions. [2019-11-28 16:15:46,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:15:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3806 transitions. [2019-11-28 16:15:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-28 16:15:46,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:46,131 INFO L410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:46,132 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:46,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:46,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1622285307, now seen corresponding path program 1 times [2019-11-28 16:15:46,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:46,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591437455] [2019-11-28 16:15:46,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 134 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 16:15:46,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591437455] [2019-11-28 16:15:46,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475925011] [2019-11-28 16:15:46,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:46,525 INFO L264 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:15:46,538 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:15:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-28 16:15:46,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:15:46,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2019-11-28 16:15:46,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284716001] [2019-11-28 16:15:46,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:15:46,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:15:46,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:46,629 INFO L87 Difference]: Start difference. First operand 3030 states and 3806 transitions. Second operand 3 states. [2019-11-28 16:15:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:47,502 INFO L93 Difference]: Finished difference Result 5880 states and 7426 transitions. [2019-11-28 16:15:47,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:15:47,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-11-28 16:15:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:47,518 INFO L225 Difference]: With dead ends: 5880 [2019-11-28 16:15:47,518 INFO L226 Difference]: Without dead ends: 3030 [2019-11-28 16:15:47,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2019-11-28 16:15:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2019-11-28 16:15:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3661 transitions. [2019-11-28 16:15:47,593 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3661 transitions. Word has length 221 [2019-11-28 16:15:47,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:47,595 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3661 transitions. [2019-11-28 16:15:47,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:15:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3661 transitions. [2019-11-28 16:15:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-11-28 16:15:47,603 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:47,603 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:47,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:15:47,809 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:47,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1634422510, now seen corresponding path program 1 times [2019-11-28 16:15:47,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:47,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676145173] [2019-11-28 16:15:47,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 238 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-28 16:15:48,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676145173] [2019-11-28 16:15:48,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869326625] [2019-11-28 16:15:48,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:48,253 INFO L264 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:15:48,261 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:15:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2019-11-28 16:15:48,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:15:48,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2019-11-28 16:15:48,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259416036] [2019-11-28 16:15:48,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:15:48,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:15:48,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:48,334 INFO L87 Difference]: Start difference. First operand 3030 states and 3661 transitions. Second operand 3 states. [2019-11-28 16:15:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:49,099 INFO L93 Difference]: Finished difference Result 6770 states and 8231 transitions. [2019-11-28 16:15:49,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:15:49,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 297 [2019-11-28 16:15:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:49,120 INFO L225 Difference]: With dead ends: 6770 [2019-11-28 16:15:49,120 INFO L226 Difference]: Without dead ends: 3742 [2019-11-28 16:15:49,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2019-11-28 16:15:49,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3030. [2019-11-28 16:15:49,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3621 transitions. [2019-11-28 16:15:49,197 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3621 transitions. Word has length 297 [2019-11-28 16:15:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:49,198 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3621 transitions. [2019-11-28 16:15:49,198 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:15:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3621 transitions. [2019-11-28 16:15:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-11-28 16:15:49,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:49,205 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2019-11-28 16:15:49,408 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:15:49,408 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash 578704993, now seen corresponding path program 1 times [2019-11-28 16:15:49,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:49,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588697611] [2019-11-28 16:15:49,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 242 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-11-28 16:15:49,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588697611] [2019-11-28 16:15:49,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470599258] [2019-11-28 16:15:49,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:49,970 INFO L264 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 16:15:49,993 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:15:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-11-28 16:15:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:15:50,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-11-28 16:15:50,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317934894] [2019-11-28 16:15:50,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:15:50,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:15:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:50,135 INFO L87 Difference]: Start difference. First operand 3030 states and 3621 transitions. Second operand 4 states. [2019-11-28 16:15:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:51,136 INFO L93 Difference]: Finished difference Result 6087 states and 7269 transitions. [2019-11-28 16:15:51,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:15:51,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2019-11-28 16:15:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:51,158 INFO L225 Difference]: With dead ends: 6087 [2019-11-28 16:15:51,158 INFO L226 Difference]: Without dead ends: 3208 [2019-11-28 16:15:51,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:15:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-28 16:15:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-28 16:15:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:51,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3281 transitions. [2019-11-28 16:15:51,214 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3281 transitions. Word has length 328 [2019-11-28 16:15:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:51,215 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3281 transitions. [2019-11-28 16:15:51,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:15:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3281 transitions. [2019-11-28 16:15:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2019-11-28 16:15:51,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:51,224 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:51,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:15:51,429 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:51,429 INFO L82 PathProgramCache]: Analyzing trace with hash 199018323, now seen corresponding path program 1 times [2019-11-28 16:15:51,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:51,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881248580] [2019-11-28 16:15:51,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 412 proven. 65 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-28 16:15:52,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881248580] [2019-11-28 16:15:52,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782177059] [2019-11-28 16:15:52,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:52,127 INFO L264 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:15:52,135 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:15:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-28 16:15:52,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:15:52,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2019-11-28 16:15:52,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227634913] [2019-11-28 16:15:52,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 16:15:52,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:52,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 16:15:52,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:15:52,538 INFO L87 Difference]: Start difference. First operand 3030 states and 3281 transitions. Second operand 7 states. [2019-11-28 16:15:53,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:53,498 INFO L93 Difference]: Finished difference Result 6108 states and 6615 transitions. [2019-11-28 16:15:53,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:15:53,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2019-11-28 16:15:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:53,512 INFO L225 Difference]: With dead ends: 6108 [2019-11-28 16:15:53,512 INFO L226 Difference]: Without dead ends: 3208 [2019-11-28 16:15:53,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:15:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-28 16:15:53,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-28 16:15:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3226 transitions. [2019-11-28 16:15:53,564 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3226 transitions. Word has length 423 [2019-11-28 16:15:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:53,564 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3226 transitions. [2019-11-28 16:15:53,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 16:15:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3226 transitions. [2019-11-28 16:15:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2019-11-28 16:15:53,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:53,579 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:53,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:15:53,783 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash -2051042170, now seen corresponding path program 1 times [2019-11-28 16:15:53,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:53,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410076206] [2019-11-28 16:15:53,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 608 proven. 4 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-28 16:15:54,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410076206] [2019-11-28 16:15:54,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164082333] [2019-11-28 16:15:54,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:15:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:54,855 INFO L264 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:15:54,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:15:54,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:15:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 589 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-28 16:15:55,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 16:15:55,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-11-28 16:15:55,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702147729] [2019-11-28 16:15:55,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:15:55,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:55,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:15:55,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:15:55,232 INFO L87 Difference]: Start difference. First operand 3030 states and 3226 transitions. Second operand 8 states. [2019-11-28 16:15:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:15:57,039 INFO L93 Difference]: Finished difference Result 6284 states and 6683 transitions. [2019-11-28 16:15:57,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 16:15:57,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 550 [2019-11-28 16:15:57,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:15:57,051 INFO L225 Difference]: With dead ends: 6284 [2019-11-28 16:15:57,051 INFO L226 Difference]: Without dead ends: 3434 [2019-11-28 16:15:57,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:15:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-11-28 16:15:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3030. [2019-11-28 16:15:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:15:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3224 transitions. [2019-11-28 16:15:57,105 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3224 transitions. Word has length 550 [2019-11-28 16:15:57,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:15:57,106 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3224 transitions. [2019-11-28 16:15:57,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:15:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3224 transitions. [2019-11-28 16:15:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2019-11-28 16:15:57,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:15:57,114 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:15:57,319 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:15:57,319 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:15:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:15:57,320 INFO L82 PathProgramCache]: Analyzing trace with hash -289671534, now seen corresponding path program 1 times [2019-11-28 16:15:57,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:15:57,321 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556750594] [2019-11-28 16:15:57,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:15:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:15:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2019-11-28 16:15:58,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556750594] [2019-11-28 16:15:58,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:15:58,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 16:15:58,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299345116] [2019-11-28 16:15:58,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 16:15:58,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:15:58,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 16:15:58,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:15:58,508 INFO L87 Difference]: Start difference. First operand 3030 states and 3224 transitions. Second operand 8 states. [2019-11-28 16:16:00,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:16:00,280 INFO L93 Difference]: Finished difference Result 5886 states and 6273 transitions. [2019-11-28 16:16:00,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:16:00,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 768 [2019-11-28 16:16:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:16:00,296 INFO L225 Difference]: With dead ends: 5886 [2019-11-28 16:16:00,297 INFO L226 Difference]: Without dead ends: 3036 [2019-11-28 16:16:00,301 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-11-28 16:16:00,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2019-11-28 16:16:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3030. [2019-11-28 16:16:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-28 16:16:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3219 transitions. [2019-11-28 16:16:00,380 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3219 transitions. Word has length 768 [2019-11-28 16:16:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:16:00,384 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3219 transitions. [2019-11-28 16:16:00,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 16:16:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3219 transitions. [2019-11-28 16:16:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2019-11-28 16:16:00,399 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:16:00,400 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:16:00,400 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:16:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:16:00,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1021218381, now seen corresponding path program 1 times [2019-11-28 16:16:00,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:16:00,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750162667] [2019-11-28 16:16:00,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:16:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:16:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1331 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-28 16:16:01,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750162667] [2019-11-28 16:16:01,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801721839] [2019-11-28 16:16:01,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:16:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:16:01,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:16:01,817 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:16:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2019-11-28 16:16:02,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:16:02,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-28 16:16:02,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101360972] [2019-11-28 16:16:02,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:16:02,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:16:02,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:16:02,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:16:02,381 INFO L87 Difference]: Start difference. First operand 3030 states and 3219 transitions. Second operand 3 states. [2019-11-28 16:16:02,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:16:03,000 INFO L93 Difference]: Finished difference Result 6770 states and 7221 transitions. [2019-11-28 16:16:03,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:16:03,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 794 [2019-11-28 16:16:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:16:03,047 INFO L225 Difference]: With dead ends: 6770 [2019-11-28 16:16:03,048 INFO L226 Difference]: Without dead ends: 3920 [2019-11-28 16:16:03,055 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:16:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2019-11-28 16:16:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3386. [2019-11-28 16:16:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2019-11-28 16:16:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3613 transitions. [2019-11-28 16:16:03,123 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3613 transitions. Word has length 794 [2019-11-28 16:16:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:16:03,125 INFO L462 AbstractCegarLoop]: Abstraction has 3386 states and 3613 transitions. [2019-11-28 16:16:03,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:16:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3613 transitions. [2019-11-28 16:16:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2019-11-28 16:16:03,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:16:03,144 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-11-28 16:16:03,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:16:03,352 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:16:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:16:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1649677907, now seen corresponding path program 1 times [2019-11-28 16:16:03,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:16:03,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45139151] [2019-11-28 16:16:03,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:16:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:16:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 1449 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-28 16:16:04,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45139151] [2019-11-28 16:16:04,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153981295] [2019-11-28 16:16:04,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-28 16:16:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:16:04,989 INFO L264 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 16:16:04,998 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:16:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2019-11-28 16:16:05,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-28 16:16:05,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-28 16:16:05,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163723248] [2019-11-28 16:16:05,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 16:16:05,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:16:05,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 16:16:05,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:16:05,595 INFO L87 Difference]: Start difference. First operand 3386 states and 3613 transitions. Second operand 3 states. [2019-11-28 16:16:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:16:06,391 INFO L93 Difference]: Finished difference Result 7124 states and 7626 transitions. [2019-11-28 16:16:06,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 16:16:06,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 858 [2019-11-28 16:16:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:16:06,394 INFO L225 Difference]: With dead ends: 7124 [2019-11-28 16:16:06,395 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:16:06,400 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 859 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:16:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:16:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:16:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:16:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:16:06,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 858 [2019-11-28 16:16:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:16:06,402 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:16:06,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 16:16:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:16:06,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:16:06,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 16:16:06,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:16:06,931 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2019-11-28 16:16:07,050 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2019-11-28 16:16:07,056 INFO L246 CegarLoopResult]: For program point L432(lines 432 870) no Hoare annotation was computed. [2019-11-28 16:16:07,056 INFO L246 CegarLoopResult]: For program point L366(lines 366 870) no Hoare annotation was computed. [2019-11-28 16:16:07,056 INFO L246 CegarLoopResult]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,056 INFO L246 CegarLoopResult]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,056 INFO L246 CegarLoopResult]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L235(lines 235 870) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L764(lines 764 870) no Hoare annotation was computed. [2019-11-28 16:16:07,057 INFO L246 CegarLoopResult]: For program point L632(lines 632 870) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L500(lines 500 870) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L831(lines 831 870) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L700(lines 700 870) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L568(lines 568 870) no Hoare annotation was computed. [2019-11-28 16:16:07,058 INFO L246 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2019-11-28 16:16:07,059 INFO L246 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2019-11-28 16:16:07,059 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-28 16:16:07,059 INFO L246 CegarLoopResult]: For program point L305(lines 305 870) no Hoare annotation was computed. [2019-11-28 16:16:07,059 INFO L246 CegarLoopResult]: For program point L438(lines 438 870) no Hoare annotation was computed. [2019-11-28 16:16:07,059 INFO L246 CegarLoopResult]: For program point L372(lines 372 870) no Hoare annotation was computed. [2019-11-28 16:16:07,060 INFO L246 CegarLoopResult]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,061 INFO L246 CegarLoopResult]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,061 INFO L246 CegarLoopResult]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,061 INFO L246 CegarLoopResult]: For program point L241(lines 241 870) no Hoare annotation was computed. [2019-11-28 16:16:07,061 INFO L246 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2019-11-28 16:16:07,061 INFO L246 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L638(lines 638 870) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L506(lines 506 870) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L837(lines 837 870) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L771(lines 771 870) no Hoare annotation was computed. [2019-11-28 16:16:07,062 INFO L246 CegarLoopResult]: For program point L573(lines 573 870) no Hoare annotation was computed. [2019-11-28 16:16:07,063 INFO L246 CegarLoopResult]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,063 INFO L246 CegarLoopResult]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,063 INFO L246 CegarLoopResult]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,063 INFO L246 CegarLoopResult]: For program point L706(lines 706 870) no Hoare annotation was computed. [2019-11-28 16:16:07,063 INFO L246 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L311(lines 311 870) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L444(lines 444 870) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L378(lines 378 870) no Hoare annotation was computed. [2019-11-28 16:16:07,064 INFO L246 CegarLoopResult]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L247(lines 247 870) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2019-11-28 16:16:07,065 INFO L246 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L842(lines 842 870) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L644(lines 644 870) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L512(lines 512 870) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L777(lines 777 870) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L579(lines 579 870) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,066 INFO L246 CegarLoopResult]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L712(lines 712 870) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-28 16:16:07,067 INFO L246 CegarLoopResult]: For program point L449(lines 449 870) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L317(lines 317 870) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L384(lines 384 870) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L252(lines 252 870) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,068 INFO L246 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L848(lines 848 870) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L650(lines 650 870) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L518(lines 518 870) no Hoare annotation was computed. [2019-11-28 16:16:07,069 INFO L246 CegarLoopResult]: For program point L783(lines 783 870) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L585(lines 585 870) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L718(lines 718 870) no Hoare annotation was computed. [2019-11-28 16:16:07,070 INFO L246 CegarLoopResult]: For program point L454(lines 454 870) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L323(lines 323 870) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L390(lines 390 870) no Hoare annotation was computed. [2019-11-28 16:16:07,071 INFO L246 CegarLoopResult]: For program point L258(lines 258 870) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2019-11-28 16:16:07,072 INFO L246 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2019-11-28 16:16:07,073 INFO L246 CegarLoopResult]: For program point L854(lines 854 870) no Hoare annotation was computed. [2019-11-28 16:16:07,073 INFO L246 CegarLoopResult]: For program point L656(lines 656 870) no Hoare annotation was computed. [2019-11-28 16:16:07,073 INFO L246 CegarLoopResult]: For program point L524(lines 524 870) no Hoare annotation was computed. [2019-11-28 16:16:07,073 INFO L246 CegarLoopResult]: For program point L789(lines 789 870) no Hoare annotation was computed. [2019-11-28 16:16:07,073 INFO L246 CegarLoopResult]: For program point L591(lines 591 870) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L724(lines 724 870) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L460(lines 460 870) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2019-11-28 16:16:07,074 INFO L246 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2019-11-28 16:16:07,075 INFO L246 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2019-11-28 16:16:07,075 INFO L246 CegarLoopResult]: For program point L329(lines 329 870) no Hoare annotation was computed. [2019-11-28 16:16:07,075 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:16:07,075 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2019-11-28 16:16:07,075 INFO L246 CegarLoopResult]: For program point L396(lines 396 870) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L264(lines 264 870) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2019-11-28 16:16:07,076 INFO L246 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L662(lines 662 870) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L530(lines 530 870) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L795(lines 795 870) no Hoare annotation was computed. [2019-11-28 16:16:07,077 INFO L246 CegarLoopResult]: For program point L597(lines 597 870) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L730(lines 730 870) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2019-11-28 16:16:07,078 INFO L246 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L467(lines 467 870) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L335(lines 335 870) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L269(lines 269 870) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L402(lines 402 870) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,079 INFO L246 CegarLoopResult]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L865(lines 865 870) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L668(lines 668 870) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L536(lines 536 870) no Hoare annotation was computed. [2019-11-28 16:16:07,080 INFO L246 CegarLoopResult]: For program point L801(lines 801 870) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L735(lines 735 870) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L603(lines 603 870) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L472(lines 472 870) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2019-11-28 16:16:07,081 INFO L246 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2019-11-28 16:16:07,082 INFO L246 CegarLoopResult]: For program point L341(lines 341 870) no Hoare annotation was computed. [2019-11-28 16:16:07,082 INFO L246 CegarLoopResult]: For program point L275(lines 275 870) no Hoare annotation was computed. [2019-11-28 16:16:07,082 INFO L246 CegarLoopResult]: For program point L408(lines 408 870) no Hoare annotation was computed. [2019-11-28 16:16:07,082 INFO L246 CegarLoopResult]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,082 INFO L246 CegarLoopResult]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,083 INFO L242 CegarLoopResult]: At program point L871(lines 20 872) the Hoare annotation is: (let ((.cse0 (= ~a24~0 1))) (or (<= ~a15~0 6) (and (not (= 5 ULTIMATE.start_calculate_output_~input)) (= ~a15~0 8) .cse0 (< 0 (+ ~a12~0 43))) (and (not (= ~a21~0 9)) .cse0) (and (< 11 ~a12~0) .cse0))) [2019-11-28 16:16:07,083 INFO L246 CegarLoopResult]: For program point L541(lines 541 870) no Hoare annotation was computed. [2019-11-28 16:16:07,083 INFO L246 CegarLoopResult]: For program point L211(lines 211 870) no Hoare annotation was computed. [2019-11-28 16:16:07,083 INFO L246 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L674(lines 674 870) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L807(lines 807 870) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L741(lines 741 870) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L609(lines 609 870) no Hoare annotation was computed. [2019-11-28 16:16:07,084 INFO L246 CegarLoopResult]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,085 INFO L246 CegarLoopResult]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,085 INFO L249 CegarLoopResult]: At program point L874(lines 874 890) the Hoare annotation is: true [2019-11-28 16:16:07,085 INFO L246 CegarLoopResult]: For program point L478(lines 478 870) no Hoare annotation was computed. [2019-11-28 16:16:07,085 INFO L246 CegarLoopResult]: For program point L280(lines 280 870) no Hoare annotation was computed. [2019-11-28 16:16:07,085 INFO L246 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2019-11-28 16:16:07,085 INFO L246 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L677(lines 677 870) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L347(lines 347 870) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L414(lines 414 870) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,086 INFO L246 CegarLoopResult]: For program point L547(lines 547 870) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point L217(lines 217 870) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point L747(lines 747 870) no Hoare annotation was computed. [2019-11-28 16:16:07,087 INFO L246 CegarLoopResult]: For program point L615(lines 615 870) no Hoare annotation was computed. [2019-11-28 16:16:07,088 INFO L246 CegarLoopResult]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,088 INFO L246 CegarLoopResult]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,088 INFO L246 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-11-28 16:16:07,088 INFO L246 CegarLoopResult]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,088 INFO L246 CegarLoopResult]: For program point L814(lines 814 870) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L242 CegarLoopResult]: At program point L880-2(lines 880 889) the Hoare annotation is: (let ((.cse0 (= ~a24~0 1))) (or (<= ~a15~0 6) (and (not (= 5 ULTIMATE.start_calculate_output_~input)) (= ~a15~0 8) .cse0 (< 0 (+ ~a12~0 43))) (and (not (= ~a21~0 9)) .cse0) (and (< 11 ~a12~0) .cse0))) [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L484(lines 484 870) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L286(lines 286 870) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-28 16:16:07,089 INFO L246 CegarLoopResult]: For program point L683(lines 683 870) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L353(lines 353 870) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L552(lines 552 870) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L420(lines 420 870) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,090 INFO L246 CegarLoopResult]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L223(lines 223 870) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L752(lines 752 870) no Hoare annotation was computed. [2019-11-28 16:16:07,091 INFO L246 CegarLoopResult]: For program point L885(line 885) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L819(lines 819 870) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L621(lines 621 870) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L555(lines 555 870) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,092 INFO L246 CegarLoopResult]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L688(lines 688 870) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L490(lines 490 870) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2019-11-28 16:16:07,093 INFO L246 CegarLoopResult]: For program point L359(lines 359 870) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L293(lines 293 870) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L426(lines 426 870) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,094 INFO L246 CegarLoopResult]: For program point L229(lines 229 870) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L758(lines 758 870) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L626(lines 626 870) no Hoare annotation was computed. [2019-11-28 16:16:07,095 INFO L246 CegarLoopResult]: For program point L825(lines 825 870) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L561(lines 561 870) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L495(lines 495 870) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2019-11-28 16:16:07,096 INFO L246 CegarLoopResult]: For program point L694(lines 694 870) no Hoare annotation was computed. [2019-11-28 16:16:07,097 INFO L246 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2019-11-28 16:16:07,097 INFO L246 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2019-11-28 16:16:07,097 INFO L246 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-28 16:16:07,097 INFO L246 CegarLoopResult]: For program point L299(lines 299 870) no Hoare annotation was computed. [2019-11-28 16:16:07,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:16:07 BoogieIcfgContainer [2019-11-28 16:16:07,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:16:07,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:16:07,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:16:07,120 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:16:07,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:15:40" (3/4) ... [2019-11-28 16:16:07,126 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:16:07,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-28 16:16:07,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 16:16:07,400 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:16:07,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:16:07,404 INFO L168 Benchmark]: Toolchain (without parser) took 29905.02 ms. Allocated memory was 1.0 GB in the beginning and 2.5 GB in the end (delta: 1.5 GB). Free memory was 949.6 MB in the beginning and 1.3 GB in the end (delta: -307.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,404 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:16:07,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,406 INFO L168 Benchmark]: Boogie Preprocessor took 104.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,406 INFO L168 Benchmark]: RCFGBuilder took 1650.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 123.9 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,407 INFO L168 Benchmark]: TraceAbstraction took 26974.97 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.3 GB). Free memory was 963.9 MB in the beginning and 1.3 GB in the end (delta: -294.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,407 INFO L168 Benchmark]: Witness Printer took 281.20 ms. Allocated memory is still 2.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 809.2 kB). Peak memory consumption was 809.2 kB. Max. memory is 11.5 GB. [2019-11-28 16:16:07,409 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 761.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 124.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 104.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1650.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 963.9 MB in the end (delta: 123.9 MB). Peak memory consumption was 123.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26974.97 ms. Allocated memory was 1.2 GB in the beginning and 2.5 GB in the end (delta: 1.3 GB). Free memory was 963.9 MB in the beginning and 1.3 GB in the end (delta: -294.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. * Witness Printer took 281.20 ms. Allocated memory is still 2.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 809.2 kB). Peak memory consumption was 809.2 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 880]: Loop Invariant Derived loop invariant: ((a15 <= 6 || (((!(5 == input) && a15 == 8) && a24 == 1) && 0 < a12 + 43)) || (!(a21 == 9) && a24 == 1)) || (11 < a12 && a24 == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a15 <= 6 || (((!(5 == input) && a15 == 8) && a24 == 1) && 0 < a12 + 43)) || (!(a21 == 9) && a24 == 1)) || (11 < a12 && a24 == 1) - InvariantResult [Line: 874]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Result: SAFE, OverallTime: 26.3s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 1088 SDtfs, 3085 SDslu, 124 SDs, 0 SdLazy, 8860 SolverSat, 1342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3525 GetRequests, 3467 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3386occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 2368 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 56 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7018 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 840 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 8060 NumberOfCodeBlocks, 8060 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8042 ConstructedInterpolants, 0 QuantifiedInterpolants, 14399456 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4382 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 13601/14015 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...