./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 30f4e4ab 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 0.1.24-30f4e4a [2019-11-27 23:11:06,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:11:06,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:11:06,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:11:06,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:11:06,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:11:06,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:11:06,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:11:06,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:11:06,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:11:06,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:11:06,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:11:06,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:11:06,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:11:06,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:11:06,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:11:06,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:11:06,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:11:06,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:11:06,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:11:06,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:11:06,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:11:06,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:11:06,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:11:06,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:11:06,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:11:06,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:11:06,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:11:06,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:11:06,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:11:06,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:11:06,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:11:06,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:11:06,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:11:06,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:11:06,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:11:06,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:11:06,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:11:06,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:11:06,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:11:06,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:11:06,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:11:06,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:11:06,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:11:06,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:11:06,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:11:06,991 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:11:06,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:11:06,992 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:11:06,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:11:06,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:11:06,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:11:06,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:11:06,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:11:06,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:11:06,994 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:11:06,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:11:06,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:11:06,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:11:06,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:11:06,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:11:06,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:11:06,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:11:06,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:11:06,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:11:06,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:11:06,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:11:06,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:11:06,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:11:06,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:11:06,999 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 [2019-11-27 23:11:07,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:11:07,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:11:07,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:11:07,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:11:07,332 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:11:07,333 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2019-11-27 23:11:07,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ccd81da/26488e9bb3124d51b2880fbd3d8c038a/FLAGce967fc06 [2019-11-27 23:11:08,049 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:11:08,051 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2019-11-27 23:11:08,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ccd81da/26488e9bb3124d51b2880fbd3d8c038a/FLAGce967fc06 [2019-11-27 23:11:08,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ccd81da/26488e9bb3124d51b2880fbd3d8c038a [2019-11-27 23:11:08,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:11:08,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:11:08,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:11:08,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:11:08,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:11:08,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:11:08" (1/1) ... [2019-11-27 23:11:08,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ade38da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:08, skipping insertion in model container [2019-11-27 23:11:08,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:11:08" (1/1) ... [2019-11-27 23:11:08,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:11:08,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:11:08,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:11:08,830 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:11:09,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:11:09,145 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:11:09,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09 WrapperNode [2019-11-27 23:11:09,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:11:09,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:11:09,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:11:09,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:11:09,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:11:09,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:11:09,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:11:09,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:11:09,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (1/1) ... [2019-11-27 23:11:09,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:11:09,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:11:09,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:11:09,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:11:09,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (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 [2019-11-27 23:11:09,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:11:09,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:11:11,014 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:11:11,014 INFO L297 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-27 23:11:11,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:11:11 BoogieIcfgContainer [2019-11-27 23:11:11,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:11:11,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:11:11,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:11:11,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:11:11,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:11:08" (1/3) ... [2019-11-27 23:11:11,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65821064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:11:11, skipping insertion in model container [2019-11-27 23:11:11,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:11:09" (2/3) ... [2019-11-27 23:11:11,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65821064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:11:11, skipping insertion in model container [2019-11-27 23:11:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:11:11" (3/3) ... [2019-11-27 23:11:11,026 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label47.c [2019-11-27 23:11:11,038 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:11:11,046 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:11:11,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:11:11,087 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:11:11,088 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:11:11,088 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:11:11,088 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:11:11,088 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:11:11,088 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:11:11,089 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:11:11,089 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:11:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2019-11-27 23:11:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-27 23:11:11,119 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:11,120 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] [2019-11-27 23:11:11,120 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2019-11-27 23:11:11,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:11,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907733960] [2019-11-27 23:11:11,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:11:11,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907733960] [2019-11-27 23:11:11,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:11:11,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:11:11,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390293160] [2019-11-27 23:11:11,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:11:11,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:11,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:11:11,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:11:11,411 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 4 states. [2019-11-27 23:11:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:13,401 INFO L93 Difference]: Finished difference Result 850 states and 1558 transitions. [2019-11-27 23:11:13,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:11:13,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-27 23:11:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:13,423 INFO L225 Difference]: With dead ends: 850 [2019-11-27 23:11:13,424 INFO L226 Difference]: Without dead ends: 538 [2019-11-27 23:11:13,429 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 [2019-11-27 23:11:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-11-27 23:11:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2019-11-27 23:11:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-11-27 23:11:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 796 transitions. [2019-11-27 23:11:13,508 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 796 transitions. Word has length 33 [2019-11-27 23:11:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:13,509 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 796 transitions. [2019-11-27 23:11:13,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:11:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 796 transitions. [2019-11-27 23:11:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-11-27 23:11:13,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:13,514 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] [2019-11-27 23:11:13,515 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1915270461, now seen corresponding path program 1 times [2019-11-27 23:11:13,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:13,516 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852826317] [2019-11-27 23:11:13,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:11:13,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852826317] [2019-11-27 23:11:13,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:11:13,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:11:13,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580809684] [2019-11-27 23:11:13,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:11:13,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:13,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:11:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:11:13,724 INFO L87 Difference]: Start difference. First operand 538 states and 796 transitions. Second operand 4 states. [2019-11-27 23:11:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:15,019 INFO L93 Difference]: Finished difference Result 2142 states and 3176 transitions. [2019-11-27 23:11:15,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:11:15,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-11-27 23:11:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:15,029 INFO L225 Difference]: With dead ends: 2142 [2019-11-27 23:11:15,030 INFO L226 Difference]: Without dead ends: 1606 [2019-11-27 23:11:15,033 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 [2019-11-27 23:11:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2019-11-27 23:11:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2019-11-27 23:11:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2019-11-27 23:11:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1939 transitions. [2019-11-27 23:11:15,091 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1939 transitions. Word has length 108 [2019-11-27 23:11:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:15,091 INFO L462 AbstractCegarLoop]: Abstraction has 1428 states and 1939 transitions. [2019-11-27 23:11:15,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:11:15,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1939 transitions. [2019-11-27 23:11:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-27 23:11:15,105 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:15,105 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] [2019-11-27 23:11:15,106 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1105444071, now seen corresponding path program 1 times [2019-11-27 23:11:15,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:15,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100752996] [2019-11-27 23:11:15,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-27 23:11:15,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100752996] [2019-11-27 23:11:15,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:11:15,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:11:15,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882883132] [2019-11-27 23:11:15,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:11:15,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:15,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:11:15,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:11:15,306 INFO L87 Difference]: Start difference. First operand 1428 states and 1939 transitions. Second operand 4 states. [2019-11-27 23:11:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:16,637 INFO L93 Difference]: Finished difference Result 4634 states and 6198 transitions. [2019-11-27 23:11:16,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:11:16,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2019-11-27 23:11:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:16,658 INFO L225 Difference]: With dead ends: 4634 [2019-11-27 23:11:16,659 INFO L226 Difference]: Without dead ends: 3208 [2019-11-27 23:11:16,663 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 [2019-11-27 23:11:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-27 23:11:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-27 23:11:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3806 transitions. [2019-11-27 23:11:16,745 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3806 transitions. Word has length 209 [2019-11-27 23:11:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:16,747 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3806 transitions. [2019-11-27 23:11:16,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:11:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3806 transitions. [2019-11-27 23:11:16,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-27 23:11:16,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:16,773 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] [2019-11-27 23:11:16,773 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1622285307, now seen corresponding path program 1 times [2019-11-27 23:11:16,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:16,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377817966] [2019-11-27 23:11:16,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 134 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-27 23:11:17,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377817966] [2019-11-27 23:11:17,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117446459] [2019-11-27 23:11:17,217 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 [2019-11-27 23:11:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:17,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:11:17,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-27 23:11:17,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:17,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2019-11-27 23:11:17,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422861145] [2019-11-27 23:11:17,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:11:17,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:17,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:11:17,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:11:17,492 INFO L87 Difference]: Start difference. First operand 3030 states and 3806 transitions. Second operand 3 states. [2019-11-27 23:11:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:18,418 INFO L93 Difference]: Finished difference Result 5880 states and 7426 transitions. [2019-11-27 23:11:18,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:11:18,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-11-27 23:11:18,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:18,439 INFO L225 Difference]: With dead ends: 5880 [2019-11-27 23:11:18,440 INFO L226 Difference]: Without dead ends: 3030 [2019-11-27 23:11:18,444 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 [2019-11-27 23:11:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2019-11-27 23:11:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 3030. [2019-11-27 23:11:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3661 transitions. [2019-11-27 23:11:18,523 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3661 transitions. Word has length 221 [2019-11-27 23:11:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:18,525 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3661 transitions. [2019-11-27 23:11:18,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:11:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3661 transitions. [2019-11-27 23:11:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-11-27 23:11:18,532 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:18,533 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] [2019-11-27 23:11:18,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:18,739 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:18,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1634422510, now seen corresponding path program 1 times [2019-11-27 23:11:18,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:18,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090388876] [2019-11-27 23:11:18,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 238 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-27 23:11:19,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090388876] [2019-11-27 23:11:19,116 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476001097] [2019-11-27 23:11:19,117 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 [2019-11-27 23:11:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:19,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:11:19,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2019-11-27 23:11:19,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:19,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2019-11-27 23:11:19,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677677022] [2019-11-27 23:11:19,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:11:19,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:19,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:11:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:11:19,300 INFO L87 Difference]: Start difference. First operand 3030 states and 3661 transitions. Second operand 3 states. [2019-11-27 23:11:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:20,009 INFO L93 Difference]: Finished difference Result 6770 states and 8231 transitions. [2019-11-27 23:11:20,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:11:20,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 297 [2019-11-27 23:11:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:20,028 INFO L225 Difference]: With dead ends: 6770 [2019-11-27 23:11:20,028 INFO L226 Difference]: Without dead ends: 3742 [2019-11-27 23:11:20,033 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 [2019-11-27 23:11:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2019-11-27 23:11:20,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3030. [2019-11-27 23:11:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3621 transitions. [2019-11-27 23:11:20,100 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3621 transitions. Word has length 297 [2019-11-27 23:11:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:20,101 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3621 transitions. [2019-11-27 23:11:20,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:11:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3621 transitions. [2019-11-27 23:11:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2019-11-27 23:11:20,107 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:20,108 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] [2019-11-27 23:11:20,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:20,313 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:20,314 INFO L82 PathProgramCache]: Analyzing trace with hash 578704993, now seen corresponding path program 1 times [2019-11-27 23:11:20,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:20,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474503831] [2019-11-27 23:11:20,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 242 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-11-27 23:11:20,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474503831] [2019-11-27 23:11:20,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220197624] [2019-11-27 23:11:20,568 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 [2019-11-27 23:11:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:20,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:11:20,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-11-27 23:11:20,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:20,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-11-27 23:11:20,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991301130] [2019-11-27 23:11:20,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:11:20,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:20,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:11:20,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:11:20,776 INFO L87 Difference]: Start difference. First operand 3030 states and 3621 transitions. Second operand 4 states. [2019-11-27 23:11:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:21,739 INFO L93 Difference]: Finished difference Result 6087 states and 7269 transitions. [2019-11-27 23:11:21,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:11:21,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2019-11-27 23:11:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:21,755 INFO L225 Difference]: With dead ends: 6087 [2019-11-27 23:11:21,756 INFO L226 Difference]: Without dead ends: 3208 [2019-11-27 23:11:21,761 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 [2019-11-27 23:11:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-27 23:11:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-27 23:11:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3281 transitions. [2019-11-27 23:11:21,874 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3281 transitions. Word has length 328 [2019-11-27 23:11:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:21,877 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3281 transitions. [2019-11-27 23:11:21,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:11:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3281 transitions. [2019-11-27 23:11:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2019-11-27 23:11:21,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:21,886 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] [2019-11-27 23:11:22,090 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:22,091 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash 199018323, now seen corresponding path program 1 times [2019-11-27 23:11:22,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:22,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425633139] [2019-11-27 23:11:22,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 412 proven. 65 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-27 23:11:22,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425633139] [2019-11-27 23:11:22,842 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645434177] [2019-11-27 23:11:22,842 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 [2019-11-27 23:11:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:22,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:11:22,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-11-27 23:11:23,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:23,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2019-11-27 23:11:23,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317631338] [2019-11-27 23:11:23,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 23:11:23,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:23,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 23:11:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:11:23,354 INFO L87 Difference]: Start difference. First operand 3030 states and 3281 transitions. Second operand 7 states. [2019-11-27 23:11:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:24,298 INFO L93 Difference]: Finished difference Result 6108 states and 6615 transitions. [2019-11-27 23:11:24,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:11:24,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2019-11-27 23:11:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:24,314 INFO L225 Difference]: With dead ends: 6108 [2019-11-27 23:11:24,314 INFO L226 Difference]: Without dead ends: 3208 [2019-11-27 23:11:24,319 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:11:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2019-11-27 23:11:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3030. [2019-11-27 23:11:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3226 transitions. [2019-11-27 23:11:24,374 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3226 transitions. Word has length 423 [2019-11-27 23:11:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:24,375 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3226 transitions. [2019-11-27 23:11:24,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 23:11:24,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3226 transitions. [2019-11-27 23:11:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2019-11-27 23:11:24,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:24,388 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] [2019-11-27 23:11:24,593 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:24,593 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:24,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:24,594 INFO L82 PathProgramCache]: Analyzing trace with hash -2051042170, now seen corresponding path program 1 times [2019-11-27 23:11:24,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:24,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784599985] [2019-11-27 23:11:24,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 608 proven. 4 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-27 23:11:25,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784599985] [2019-11-27 23:11:25,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167430504] [2019-11-27 23:11:25,783 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 [2019-11-27 23:11:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:25,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-27 23:11:25,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:25,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:11:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 589 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-11-27 23:11:26,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:11:26,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2019-11-27 23:11:26,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152156674] [2019-11-27 23:11:26,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:11:26,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:11:26,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:11:26,337 INFO L87 Difference]: Start difference. First operand 3030 states and 3226 transitions. Second operand 8 states. [2019-11-27 23:11:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:28,357 INFO L93 Difference]: Finished difference Result 6284 states and 6683 transitions. [2019-11-27 23:11:28,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-27 23:11:28,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 550 [2019-11-27 23:11:28,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:28,371 INFO L225 Difference]: With dead ends: 6284 [2019-11-27 23:11:28,371 INFO L226 Difference]: Without dead ends: 3434 [2019-11-27 23:11:28,375 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 [2019-11-27 23:11:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-11-27 23:11:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3030. [2019-11-27 23:11:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3224 transitions. [2019-11-27 23:11:28,430 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3224 transitions. Word has length 550 [2019-11-27 23:11:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:28,431 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3224 transitions. [2019-11-27 23:11:28,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:11:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3224 transitions. [2019-11-27 23:11:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2019-11-27 23:11:28,454 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:28,455 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] [2019-11-27 23:11:28,667 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:28,667 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:28,668 INFO L82 PathProgramCache]: Analyzing trace with hash -289671534, now seen corresponding path program 1 times [2019-11-27 23:11:28,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:28,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772766074] [2019-11-27 23:11:28,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2019-11-27 23:11:29,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772766074] [2019-11-27 23:11:29,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:11:29,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-27 23:11:29,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020787956] [2019-11-27 23:11:29,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 23:11:29,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 23:11:29,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-27 23:11:29,884 INFO L87 Difference]: Start difference. First operand 3030 states and 3224 transitions. Second operand 8 states. [2019-11-27 23:11:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:31,361 INFO L93 Difference]: Finished difference Result 5886 states and 6273 transitions. [2019-11-27 23:11:31,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:11:31,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 768 [2019-11-27 23:11:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:31,373 INFO L225 Difference]: With dead ends: 5886 [2019-11-27 23:11:31,373 INFO L226 Difference]: Without dead ends: 3036 [2019-11-27 23:11:31,377 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 [2019-11-27 23:11:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2019-11-27 23:11:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3030. [2019-11-27 23:11:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3030 states. [2019-11-27 23:11:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3219 transitions. [2019-11-27 23:11:31,422 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3219 transitions. Word has length 768 [2019-11-27 23:11:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:31,423 INFO L462 AbstractCegarLoop]: Abstraction has 3030 states and 3219 transitions. [2019-11-27 23:11:31,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 23:11:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3219 transitions. [2019-11-27 23:11:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2019-11-27 23:11:31,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:31,431 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] [2019-11-27 23:11:31,432 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1021218381, now seen corresponding path program 1 times [2019-11-27 23:11:31,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:31,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896643132] [2019-11-27 23:11:31,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 1331 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-27 23:11:32,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896643132] [2019-11-27 23:11:32,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77962249] [2019-11-27 23:11:32,230 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 [2019-11-27 23:11:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:32,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:11:32,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1831 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2019-11-27 23:11:32,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:32,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-27 23:11:32,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114944517] [2019-11-27 23:11:32,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:11:32,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:32,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:11:32,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:11:32,950 INFO L87 Difference]: Start difference. First operand 3030 states and 3219 transitions. Second operand 3 states. [2019-11-27 23:11:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:33,514 INFO L93 Difference]: Finished difference Result 6770 states and 7221 transitions. [2019-11-27 23:11:33,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:11:33,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 794 [2019-11-27 23:11:33,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:33,529 INFO L225 Difference]: With dead ends: 6770 [2019-11-27 23:11:33,529 INFO L226 Difference]: Without dead ends: 3920 [2019-11-27 23:11:33,532 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 [2019-11-27 23:11:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2019-11-27 23:11:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3386. [2019-11-27 23:11:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2019-11-27 23:11:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3613 transitions. [2019-11-27 23:11:33,579 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3613 transitions. Word has length 794 [2019-11-27 23:11:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:33,580 INFO L462 AbstractCegarLoop]: Abstraction has 3386 states and 3613 transitions. [2019-11-27 23:11:33,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:11:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3613 transitions. [2019-11-27 23:11:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2019-11-27 23:11:33,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:11:33,591 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] [2019-11-27 23:11:33,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:33,803 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:11:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:11:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1649677907, now seen corresponding path program 1 times [2019-11-27 23:11:33,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:11:33,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060392980] [2019-11-27 23:11:33,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:11:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 1449 proven. 155 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-27 23:11:34,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060392980] [2019-11-27 23:11:34,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782884486] [2019-11-27 23:11:34,977 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 [2019-11-27 23:11:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:11:35,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-27 23:11:35,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:11:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2019-11-27 23:11:35,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-27 23:11:35,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-11-27 23:11:35,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691792024] [2019-11-27 23:11:35,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:11:35,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:11:35,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:11:35,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:11:35,670 INFO L87 Difference]: Start difference. First operand 3386 states and 3613 transitions. Second operand 3 states. [2019-11-27 23:11:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:11:36,392 INFO L93 Difference]: Finished difference Result 7124 states and 7626 transitions. [2019-11-27 23:11:36,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:11:36,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 858 [2019-11-27 23:11:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:11:36,395 INFO L225 Difference]: With dead ends: 7124 [2019-11-27 23:11:36,395 INFO L226 Difference]: Without dead ends: 0 [2019-11-27 23:11:36,400 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 [2019-11-27 23:11:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-27 23:11:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-27 23:11:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-27 23:11:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-27 23:11:36,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 858 [2019-11-27 23:11:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:11:36,402 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-27 23:11:36,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:11:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-27 23:11:36,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-27 23:11:36,607 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 23:11:36,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-27 23:11:36,932 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2019-11-27 23:11:37,055 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2019-11-27 23:11:37,059 INFO L246 CegarLoopResult]: For program point L432(lines 432 870) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L366(lines 366 870) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L235(lines 235 870) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2019-11-27 23:11:37,060 INFO L246 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L764(lines 764 870) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L632(lines 632 870) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L500(lines 500 870) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L831(lines 831 870) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L700(lines 700 870) no Hoare annotation was computed. [2019-11-27 23:11:37,061 INFO L246 CegarLoopResult]: For program point L568(lines 568 870) no Hoare annotation was computed. [2019-11-27 23:11:37,062 INFO L246 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L305(lines 305 870) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L438(lines 438 870) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L372(lines 372 870) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,063 INFO L246 CegarLoopResult]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L241(lines 241 870) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-11-27 23:11:37,064 INFO L246 CegarLoopResult]: For program point L638(lines 638 870) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L506(lines 506 870) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L837(lines 837 870) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L771(lines 771 870) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L573(lines 573 870) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,065 INFO L246 CegarLoopResult]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,066 INFO L246 CegarLoopResult]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,066 INFO L246 CegarLoopResult]: For program point L706(lines 706 870) no Hoare annotation was computed. [2019-11-27 23:11:37,066 INFO L246 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2019-11-27 23:11:37,066 INFO L246 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2019-11-27 23:11:37,066 INFO L246 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L311(lines 311 870) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L444(lines 444 870) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L378(lines 378 870) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,067 INFO L246 CegarLoopResult]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L247(lines 247 870) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L842(lines 842 870) no Hoare annotation was computed. [2019-11-27 23:11:37,068 INFO L246 CegarLoopResult]: For program point L644(lines 644 870) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L512(lines 512 870) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L777(lines 777 870) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L579(lines 579 870) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,069 INFO L246 CegarLoopResult]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L712(lines 712 870) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L449(lines 449 870) no Hoare annotation was computed. [2019-11-27 23:11:37,070 INFO L246 CegarLoopResult]: For program point L317(lines 317 870) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L384(lines 384 870) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L252(lines 252 870) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,071 INFO L246 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L848(lines 848 870) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L650(lines 650 870) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L518(lines 518 870) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L783(lines 783 870) no Hoare annotation was computed. [2019-11-27 23:11:37,072 INFO L246 CegarLoopResult]: For program point L585(lines 585 870) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point L718(lines 718 870) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point L454(lines 454 870) no Hoare annotation was computed. [2019-11-27 23:11:37,073 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L323(lines 323 870) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L390(lines 390 870) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L258(lines 258 870) no Hoare annotation was computed. [2019-11-27 23:11:37,074 INFO L246 CegarLoopResult]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2019-11-27 23:11:37,075 INFO L246 CegarLoopResult]: For program point L854(lines 854 870) no Hoare annotation was computed. [2019-11-27 23:11:37,076 INFO L246 CegarLoopResult]: For program point L656(lines 656 870) no Hoare annotation was computed. [2019-11-27 23:11:37,076 INFO L246 CegarLoopResult]: For program point L524(lines 524 870) no Hoare annotation was computed. [2019-11-27 23:11:37,076 INFO L246 CegarLoopResult]: For program point L789(lines 789 870) no Hoare annotation was computed. [2019-11-27 23:11:37,076 INFO L246 CegarLoopResult]: For program point L591(lines 591 870) no Hoare annotation was computed. [2019-11-27 23:11:37,076 INFO L246 CegarLoopResult]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L724(lines 724 870) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L460(lines 460 870) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2019-11-27 23:11:37,077 INFO L246 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point L329(lines 329 870) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point L396(lines 396 870) no Hoare annotation was computed. [2019-11-27 23:11:37,078 INFO L246 CegarLoopResult]: For program point L264(lines 264 870) no Hoare annotation was computed. [2019-11-27 23:11:37,079 INFO L246 CegarLoopResult]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,079 INFO L246 CegarLoopResult]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,079 INFO L246 CegarLoopResult]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,079 INFO L246 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2019-11-27 23:11:37,079 INFO L246 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L662(lines 662 870) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L530(lines 530 870) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L795(lines 795 870) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L597(lines 597 870) no Hoare annotation was computed. [2019-11-27 23:11:37,080 INFO L246 CegarLoopResult]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L730(lines 730 870) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2019-11-27 23:11:37,081 INFO L246 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L467(lines 467 870) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L335(lines 335 870) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L269(lines 269 870) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L402(lines 402 870) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,082 INFO L246 CegarLoopResult]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L865(lines 865 870) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L668(lines 668 870) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L536(lines 536 870) no Hoare annotation was computed. [2019-11-27 23:11:37,083 INFO L246 CegarLoopResult]: For program point L801(lines 801 870) no Hoare annotation was computed. [2019-11-27 23:11:37,084 INFO L246 CegarLoopResult]: For program point L735(lines 735 870) no Hoare annotation was computed. [2019-11-27 23:11:37,084 INFO L246 CegarLoopResult]: For program point L603(lines 603 870) no Hoare annotation was computed. [2019-11-27 23:11:37,084 INFO L246 CegarLoopResult]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,084 INFO L246 CegarLoopResult]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,084 INFO L246 CegarLoopResult]: For program point L472(lines 472 870) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L341(lines 341 870) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L275(lines 275 870) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L408(lines 408 870) no Hoare annotation was computed. [2019-11-27 23:11:37,085 INFO L246 CegarLoopResult]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,086 INFO L246 CegarLoopResult]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,086 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))) [2019-11-27 23:11:37,086 INFO L246 CegarLoopResult]: For program point L541(lines 541 870) no Hoare annotation was computed. [2019-11-27 23:11:37,086 INFO L246 CegarLoopResult]: For program point L211(lines 211 870) no Hoare annotation was computed. [2019-11-27 23:11:37,087 INFO L246 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2019-11-27 23:11:37,087 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-11-27 23:11:37,087 INFO L246 CegarLoopResult]: For program point L674(lines 674 870) no Hoare annotation was computed. [2019-11-27 23:11:37,087 INFO L246 CegarLoopResult]: For program point L807(lines 807 870) no Hoare annotation was computed. [2019-11-27 23:11:37,087 INFO L246 CegarLoopResult]: For program point L741(lines 741 870) no Hoare annotation was computed. [2019-11-27 23:11:37,088 INFO L246 CegarLoopResult]: For program point L609(lines 609 870) no Hoare annotation was computed. [2019-11-27 23:11:37,088 INFO L246 CegarLoopResult]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,088 INFO L246 CegarLoopResult]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,088 INFO L249 CegarLoopResult]: At program point L874(lines 874 890) the Hoare annotation is: true [2019-11-27 23:11:37,088 INFO L246 CegarLoopResult]: For program point L478(lines 478 870) no Hoare annotation was computed. [2019-11-27 23:11:37,088 INFO L246 CegarLoopResult]: For program point L280(lines 280 870) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L677(lines 677 870) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L347(lines 347 870) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L414(lines 414 870) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,089 INFO L246 CegarLoopResult]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point L547(lines 547 870) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point L217(lines 217 870) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-27 23:11:37,090 INFO L246 CegarLoopResult]: For program point L747(lines 747 870) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L615(lines 615 870) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,091 INFO L246 CegarLoopResult]: For program point L814(lines 814 870) no Hoare annotation was computed. [2019-11-27 23:11:37,092 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))) [2019-11-27 23:11:37,092 INFO L246 CegarLoopResult]: For program point L484(lines 484 870) no Hoare annotation was computed. [2019-11-27 23:11:37,092 INFO L246 CegarLoopResult]: For program point L286(lines 286 870) no Hoare annotation was computed. [2019-11-27 23:11:37,092 INFO L246 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-27 23:11:37,092 INFO L246 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L683(lines 683 870) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L353(lines 353 870) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L552(lines 552 870) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L420(lines 420 870) no Hoare annotation was computed. [2019-11-27 23:11:37,093 INFO L246 CegarLoopResult]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L223(lines 223 870) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2019-11-27 23:11:37,094 INFO L246 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L752(lines 752 870) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L885(line 885) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L819(lines 819 870) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L621(lines 621 870) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L555(lines 555 870) no Hoare annotation was computed. [2019-11-27 23:11:37,095 INFO L246 CegarLoopResult]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L688(lines 688 870) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L490(lines 490 870) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2019-11-27 23:11:37,096 INFO L246 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point L359(lines 359 870) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point L293(lines 293 870) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point L426(lines 426 870) no Hoare annotation was computed. [2019-11-27 23:11:37,097 INFO L246 CegarLoopResult]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L229(lines 229 870) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2019-11-27 23:11:37,098 INFO L246 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L758(lines 758 870) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L626(lines 626 870) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L825(lines 825 870) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L561(lines 561 870) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L495(lines 495 870) no Hoare annotation was computed. [2019-11-27 23:11:37,099 INFO L246 CegarLoopResult]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L694(lines 694 870) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2019-11-27 23:11:37,100 INFO L246 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-27 23:11:37,101 INFO L246 CegarLoopResult]: For program point L299(lines 299 870) no Hoare annotation was computed. [2019-11-27 23:11:37,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:11:37 BoogieIcfgContainer [2019-11-27 23:11:37,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:11:37,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:11:37,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:11:37,123 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:11:37,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:11:11" (3/4) ... [2019-11-27 23:11:37,126 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-27 23:11:37,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-27 23:11:37,152 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-27 23:11:37,321 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:11:37,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:11:37,323 INFO L168 Benchmark]: Toolchain (without parser) took 29054.97 ms. Allocated memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: 1.3 GB). Free memory was 955.0 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 181.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,323 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:11:37,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 146.10 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,324 INFO L168 Benchmark]: Boogie Preprocessor took 173.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,325 INFO L168 Benchmark]: RCFGBuilder took 1548.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.4 MB in the end (delta: 125.9 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,325 INFO L168 Benchmark]: TraceAbstraction took 26104.55 ms. Allocated memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: 1.2 GB). Free memory was 968.4 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,325 INFO L168 Benchmark]: Witness Printer took 198.86 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:11:37,327 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 877.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). Peak memory consumption was 41.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 146.10 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 173.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1548.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 968.4 MB in the end (delta: 125.9 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26104.55 ms. Allocated memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: 1.2 GB). Free memory was 968.4 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * Witness Printer took 198.86 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. 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: 25.5s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 13.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 1088 SDtfs, 3085 SDslu, 124 SDs, 0 SdLazy, 8860 SolverSat, 1342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 4.4s 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...