./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/Problem01_label40.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d094e42df8541752d78f0af0edf4249146a918f5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:30:21,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:30:21,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:30:21,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:30:21,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:30:21,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:30:21,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:30:21,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:30:21,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:30:21,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:30:21,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:30:21,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:30:21,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:30:21,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:30:21,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:30:21,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:30:21,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:30:21,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:30:21,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:30:21,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:30:21,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:30:21,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:30:21,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:30:21,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:30:22,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:30:22,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:30:22,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:30:22,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:30:22,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:30:22,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:30:22,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:30:22,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:30:22,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:30:22,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:30:22,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:30:22,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:30:22,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:30:22,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:30:22,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:30:22,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:30:22,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:30:22,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:30:22,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:30:22,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:30:22,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:30:22,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:30:22,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:30:22,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:30:22,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:30:22,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:30:22,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:30:22,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:30:22,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:30:22,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:30:22,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:30:22,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:30:22,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:30:22,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:30:22,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:30:22,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:30:22,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:30:22,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:30:22,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:30:22,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:30:22,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:30:22,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:30:22,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:30:22,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:30:22,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:30:22,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:30:22,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:30:22,097 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(reach_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 -> d094e42df8541752d78f0af0edf4249146a918f5 [2020-10-19 22:30:22,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:30:22,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:30:22,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:30:22,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:30:22,329 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:30:22,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-10-19 22:30:22,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457f41418/65105fc88fea4346a4566298311aea12/FLAGf768a088d [2020-10-19 22:30:23,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:30:23,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label40.c [2020-10-19 22:30:23,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457f41418/65105fc88fea4346a4566298311aea12/FLAGf768a088d [2020-10-19 22:30:23,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/457f41418/65105fc88fea4346a4566298311aea12 [2020-10-19 22:30:23,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:30:23,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:30:23,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:30:23,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:30:23,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:30:23,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:23,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43cf9fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23, skipping insertion in model container [2020-10-19 22:30:23,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:23,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:30:23,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:30:23,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:30:23,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:30:23,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:30:23,942 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:30:23,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23 WrapperNode [2020-10-19 22:30:23,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:30:23,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:30:23,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:30:23,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:30:23,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:23,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:30:24,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:30:24,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:30:24,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:30:24,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (1/1) ... [2020-10-19 22:30:24,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:30:24,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:30:24,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:30:24,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:30:24,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (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 [2020-10-19 22:30:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:30:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:30:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:30:24,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:30:25,439 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:30:25,439 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:30:25,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:25 BoogieIcfgContainer [2020-10-19 22:30:25,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:30:25,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:30:25,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:30:25,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:30:25,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:30:23" (1/3) ... [2020-10-19 22:30:25,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749af2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:30:25, skipping insertion in model container [2020-10-19 22:30:25,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:23" (2/3) ... [2020-10-19 22:30:25,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749af2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:30:25, skipping insertion in model container [2020-10-19 22:30:25,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:25" (3/3) ... [2020-10-19 22:30:25,556 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label40.c [2020-10-19 22:30:25,570 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:30:25,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:30:25,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:30:25,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:30:25,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:30:25,625 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:30:25,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:30:25,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:30:25,625 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:30:25,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:30:25,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:30:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-10-19 22:30:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-19 22:30:25,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:25,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:25,657 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:25,664 INFO L82 PathProgramCache]: Analyzing trace with hash 304749070, now seen corresponding path program 1 times [2020-10-19 22:30:25,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:25,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471371476] [2020-10-19 22:30:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:26,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471371476] [2020-10-19 22:30:26,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:26,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:26,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881489694] [2020-10-19 22:30:26,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:26,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:26,100 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-10-19 22:30:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:26,938 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-10-19 22:30:26,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:26,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-10-19 22:30:26,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:26,957 INFO L225 Difference]: With dead ends: 529 [2020-10-19 22:30:26,958 INFO L226 Difference]: Without dead ends: 266 [2020-10-19 22:30:26,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:26,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-19 22:30:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-19 22:30:27,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-19 22:30:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-10-19 22:30:27,024 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 87 [2020-10-19 22:30:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:27,025 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-10-19 22:30:27,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-10-19 22:30:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-19 22:30:27,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:27,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:27,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:30:27,031 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:27,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:27,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1973927540, now seen corresponding path program 1 times [2020-10-19 22:30:27,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:27,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456068251] [2020-10-19 22:30:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:27,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456068251] [2020-10-19 22:30:27,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:27,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:27,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302188639] [2020-10-19 22:30:27,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:27,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:27,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:27,132 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-10-19 22:30:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:27,670 INFO L93 Difference]: Finished difference Result 794 states and 1136 transitions. [2020-10-19 22:30:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:27,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-10-19 22:30:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:27,675 INFO L225 Difference]: With dead ends: 794 [2020-10-19 22:30:27,676 INFO L226 Difference]: Without dead ends: 530 [2020-10-19 22:30:27,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-19 22:30:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2020-10-19 22:30:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-19 22:30:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 721 transitions. [2020-10-19 22:30:27,704 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 721 transitions. Word has length 92 [2020-10-19 22:30:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:27,706 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 721 transitions. [2020-10-19 22:30:27,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 721 transitions. [2020-10-19 22:30:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-19 22:30:27,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:27,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:27,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:30:27,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1082765250, now seen corresponding path program 1 times [2020-10-19 22:30:27,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:27,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22680684] [2020-10-19 22:30:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:27,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22680684] [2020-10-19 22:30:27,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:27,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:27,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488938909] [2020-10-19 22:30:27,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:27,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:27,830 INFO L87 Difference]: Start difference. First operand 528 states and 721 transitions. Second operand 3 states. [2020-10-19 22:30:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:28,427 INFO L93 Difference]: Finished difference Result 1578 states and 2158 transitions. [2020-10-19 22:30:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:28,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-10-19 22:30:28,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:28,434 INFO L225 Difference]: With dead ends: 1578 [2020-10-19 22:30:28,434 INFO L226 Difference]: Without dead ends: 1052 [2020-10-19 22:30:28,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-19 22:30:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-10-19 22:30:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-19 22:30:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1367 transitions. [2020-10-19 22:30:28,472 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1367 transitions. Word has length 96 [2020-10-19 22:30:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:28,473 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1367 transitions. [2020-10-19 22:30:28,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1367 transitions. [2020-10-19 22:30:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:30:28,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:28,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:28,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:30:28,480 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1253646839, now seen corresponding path program 1 times [2020-10-19 22:30:28,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:28,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650489767] [2020-10-19 22:30:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:28,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650489767] [2020-10-19 22:30:28,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:28,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:28,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738012448] [2020-10-19 22:30:28,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:30:28,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:28,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:30:28,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:30:28,635 INFO L87 Difference]: Start difference. First operand 1052 states and 1367 transitions. Second operand 4 states. [2020-10-19 22:30:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:29,587 INFO L93 Difference]: Finished difference Result 2626 states and 3388 transitions. [2020-10-19 22:30:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:30:29,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:30:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:29,596 INFO L225 Difference]: With dead ends: 2626 [2020-10-19 22:30:29,596 INFO L226 Difference]: Without dead ends: 1576 [2020-10-19 22:30:29,598 INFO L677 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 [2020-10-19 22:30:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-19 22:30:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-10-19 22:30:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-19 22:30:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1659 transitions. [2020-10-19 22:30:29,630 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1659 transitions. Word has length 99 [2020-10-19 22:30:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:29,631 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1659 transitions. [2020-10-19 22:30:29,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:30:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1659 transitions. [2020-10-19 22:30:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:30:29,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:29,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:29,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:30:29,634 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 810714872, now seen corresponding path program 1 times [2020-10-19 22:30:29,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:29,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41951682] [2020-10-19 22:30:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:29,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41951682] [2020-10-19 22:30:29,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:29,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:29,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454029875] [2020-10-19 22:30:29,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:29,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:29,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:29,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:29,704 INFO L87 Difference]: Start difference. First operand 1314 states and 1659 transitions. Second operand 3 states. [2020-10-19 22:30:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:30,286 INFO L93 Difference]: Finished difference Result 3543 states and 4513 transitions. [2020-10-19 22:30:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:30,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-10-19 22:30:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:30,298 INFO L225 Difference]: With dead ends: 3543 [2020-10-19 22:30:30,298 INFO L226 Difference]: Without dead ends: 2231 [2020-10-19 22:30:30,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-19 22:30:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2100. [2020-10-19 22:30:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-19 22:30:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2679 transitions. [2020-10-19 22:30:30,343 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2679 transitions. Word has length 100 [2020-10-19 22:30:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:30,343 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2679 transitions. [2020-10-19 22:30:30,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2679 transitions. [2020-10-19 22:30:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:30:30,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:30,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:30,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:30:30,347 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:30,348 INFO L82 PathProgramCache]: Analyzing trace with hash -785165075, now seen corresponding path program 1 times [2020-10-19 22:30:30,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:30,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607884073] [2020-10-19 22:30:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:30,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607884073] [2020-10-19 22:30:30,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:30,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:30,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187520521] [2020-10-19 22:30:30,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:30,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:30,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:30,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:30,419 INFO L87 Difference]: Start difference. First operand 2100 states and 2679 transitions. Second operand 3 states. [2020-10-19 22:30:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:30,996 INFO L93 Difference]: Finished difference Result 4460 states and 5648 transitions. [2020-10-19 22:30:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:30,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-10-19 22:30:30,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:31,007 INFO L225 Difference]: With dead ends: 4460 [2020-10-19 22:30:31,008 INFO L226 Difference]: Without dead ends: 2362 [2020-10-19 22:30:31,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-19 22:30:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2231. [2020-10-19 22:30:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-19 22:30:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2798 transitions. [2020-10-19 22:30:31,056 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2798 transitions. Word has length 102 [2020-10-19 22:30:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:31,057 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2798 transitions. [2020-10-19 22:30:31,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2798 transitions. [2020-10-19 22:30:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:30:31,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:31,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:31,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:30:31,061 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:31,062 INFO L82 PathProgramCache]: Analyzing trace with hash -902364545, now seen corresponding path program 1 times [2020-10-19 22:30:31,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:31,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851590632] [2020-10-19 22:30:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 22:30:31,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851590632] [2020-10-19 22:30:31,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:31,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:31,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278969900] [2020-10-19 22:30:31,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:31,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:31,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:31,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:31,107 INFO L87 Difference]: Start difference. First operand 2231 states and 2798 transitions. Second operand 3 states. [2020-10-19 22:30:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:31,617 INFO L93 Difference]: Finished difference Result 4853 states and 6078 transitions. [2020-10-19 22:30:31,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:31,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-10-19 22:30:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:31,629 INFO L225 Difference]: With dead ends: 4853 [2020-10-19 22:30:31,629 INFO L226 Difference]: Without dead ends: 2493 [2020-10-19 22:30:31,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-10-19 22:30:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-10-19 22:30:31,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-19 22:30:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2880 transitions. [2020-10-19 22:30:31,676 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2880 transitions. Word has length 103 [2020-10-19 22:30:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:31,676 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2880 transitions. [2020-10-19 22:30:31,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2880 transitions. [2020-10-19 22:30:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:30:31,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:31,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:31,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:30:31,680 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:31,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:31,681 INFO L82 PathProgramCache]: Analyzing trace with hash 752228391, now seen corresponding path program 1 times [2020-10-19 22:30:31,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:31,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198400050] [2020-10-19 22:30:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:31,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198400050] [2020-10-19 22:30:31,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818878313] [2020-10-19 22:30:31,740 INFO L95 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 [2020-10-19 22:30:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:31,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-19 22:30:31,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:31,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-10-19 22:30:31,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845686323] [2020-10-19 22:30:31,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:31,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:31,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:31,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:31,918 INFO L87 Difference]: Start difference. First operand 2493 states and 2880 transitions. Second operand 3 states. [2020-10-19 22:30:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:32,525 INFO L93 Difference]: Finished difference Result 5770 states and 6647 transitions. [2020-10-19 22:30:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:32,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:30:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:32,539 INFO L225 Difference]: With dead ends: 5770 [2020-10-19 22:30:32,540 INFO L226 Difference]: Without dead ends: 3279 [2020-10-19 22:30:32,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-10-19 22:30:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2493. [2020-10-19 22:30:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-19 22:30:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2844 transitions. [2020-10-19 22:30:32,600 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2844 transitions. Word has length 106 [2020-10-19 22:30:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:32,601 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2844 transitions. [2020-10-19 22:30:32,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2844 transitions. [2020-10-19 22:30:32,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-19 22:30:32,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:32,606 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:32,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-19 22:30:32,820 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:32,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:32,821 INFO L82 PathProgramCache]: Analyzing trace with hash -670996178, now seen corresponding path program 1 times [2020-10-19 22:30:32,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:32,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808470027] [2020-10-19 22:30:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-19 22:30:32,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808470027] [2020-10-19 22:30:32,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:32,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:32,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701719913] [2020-10-19 22:30:32,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:30:32,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:30:32,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:30:32,889 INFO L87 Difference]: Start difference. First operand 2493 states and 2844 transitions. Second operand 4 states. [2020-10-19 22:30:33,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:33,624 INFO L93 Difference]: Finished difference Result 4984 states and 5686 transitions. [2020-10-19 22:30:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:30:33,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-19 22:30:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:33,635 INFO L225 Difference]: With dead ends: 4984 [2020-10-19 22:30:33,635 INFO L226 Difference]: Without dead ends: 2493 [2020-10-19 22:30:33,638 INFO L677 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 [2020-10-19 22:30:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-10-19 22:30:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2493. [2020-10-19 22:30:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2493 states. [2020-10-19 22:30:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2814 transitions. [2020-10-19 22:30:33,686 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2814 transitions. Word has length 146 [2020-10-19 22:30:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:33,686 INFO L481 AbstractCegarLoop]: Abstraction has 2493 states and 2814 transitions. [2020-10-19 22:30:33,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:30:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2814 transitions. [2020-10-19 22:30:33,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-19 22:30:33,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:33,692 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:33,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:30:33,693 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:33,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:33,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1859038104, now seen corresponding path program 1 times [2020-10-19 22:30:33,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:33,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878888395] [2020-10-19 22:30:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-19 22:30:33,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878888395] [2020-10-19 22:30:33,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663650708] [2020-10-19 22:30:33,794 INFO L95 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 [2020-10-19 22:30:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:33,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:33,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:34,021 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-19 22:30:34,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:34,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:34,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056297231] [2020-10-19 22:30:34,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:34,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:34,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:34,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:34,023 INFO L87 Difference]: Start difference. First operand 2493 states and 2814 transitions. Second operand 3 states. [2020-10-19 22:30:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:34,482 INFO L93 Difference]: Finished difference Result 5508 states and 6231 transitions. [2020-10-19 22:30:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:34,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-10-19 22:30:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:34,493 INFO L225 Difference]: With dead ends: 5508 [2020-10-19 22:30:34,493 INFO L226 Difference]: Without dead ends: 3017 [2020-10-19 22:30:34,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2020-10-19 22:30:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 2755. [2020-10-19 22:30:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-10-19 22:30:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-10-19 22:30:34,545 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 175 [2020-10-19 22:30:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:34,545 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-10-19 22:30:34,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-10-19 22:30:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-19 22:30:34,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:34,552 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-19 22:30:34,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 22:30:34,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1305049907, now seen corresponding path program 1 times [2020-10-19 22:30:34,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:34,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873536789] [2020-10-19 22:30:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-19 22:30:34,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873536789] [2020-10-19 22:30:34,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132388647] [2020-10-19 22:30:34,956 INFO L95 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 [2020-10-19 22:30:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:35,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:35,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-19 22:30:35,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:35,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:35,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620082885] [2020-10-19 22:30:35,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:35,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:35,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:35,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:35,291 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-10-19 22:30:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:35,930 INFO L93 Difference]: Finished difference Result 6032 states and 6814 transitions. [2020-10-19 22:30:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:35,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2020-10-19 22:30:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:35,949 INFO L225 Difference]: With dead ends: 6032 [2020-10-19 22:30:35,950 INFO L226 Difference]: Without dead ends: 3279 [2020-10-19 22:30:35,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-10-19 22:30:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2755. [2020-10-19 22:30:36,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2755 states. [2020-10-19 22:30:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3106 transitions. [2020-10-19 22:30:36,056 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3106 transitions. Word has length 208 [2020-10-19 22:30:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:36,056 INFO L481 AbstractCegarLoop]: Abstraction has 2755 states and 3106 transitions. [2020-10-19 22:30:36,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3106 transitions. [2020-10-19 22:30:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-19 22:30:36,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:36,068 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:36,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-19 22:30:36,284 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:36,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:36,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2044006231, now seen corresponding path program 1 times [2020-10-19 22:30:36,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:36,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664842626] [2020-10-19 22:30:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 119 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-19 22:30:36,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664842626] [2020-10-19 22:30:36,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593948247] [2020-10-19 22:30:36,510 INFO L95 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 [2020-10-19 22:30:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:30:36,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-19 22:30:36,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:36,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:36,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558366643] [2020-10-19 22:30:36,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:36,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:36,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:36,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:36,779 INFO L87 Difference]: Start difference. First operand 2755 states and 3106 transitions. Second operand 3 states. [2020-10-19 22:30:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:37,294 INFO L93 Difference]: Finished difference Result 5113 states and 5740 transitions. [2020-10-19 22:30:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:37,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-10-19 22:30:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:37,296 INFO L225 Difference]: With dead ends: 5113 [2020-10-19 22:30:37,296 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:30:37,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:30:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:30:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:30:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:30:37,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 220 [2020-10-19 22:30:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:37,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:30:37,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:30:37,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:30:37,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:30:37,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:30:37,716 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-19 22:30:37,888 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-19 22:30:37,892 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,892 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-19 22:30:37,893 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-19 22:30:37,895 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-19 22:30:37,895 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-19 22:30:37,895 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-19 22:30:37,895 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-19 22:30:37,895 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-19 22:30:37,896 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-19 22:30:37,896 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-19 22:30:37,897 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-19 22:30:37,898 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-19 22:30:37,898 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-19 22:30:37,898 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,898 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,898 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,899 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,899 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,899 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,899 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-19 22:30:37,901 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-19 22:30:37,902 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,903 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,904 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,904 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,905 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-19 22:30:37,906 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-19 22:30:37,906 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-19 22:30:37,906 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-19 22:30:37,906 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-19 22:30:37,907 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,908 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-19 22:30:37,909 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-19 22:30:37,910 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-19 22:30:37,910 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-19 22:30:37,910 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-19 22:30:37,910 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-19 22:30:37,911 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-19 22:30:37,911 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-19 22:30:37,913 INFO L270 CegarLoopResult]: At program point L576(lines 32 577) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-10-19 22:30:37,913 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,913 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,913 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,913 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-19 22:30:37,914 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-19 22:30:37,915 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-19 22:30:37,915 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-19 22:30:37,915 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-19 22:30:37,915 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-19 22:30:37,915 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-19 22:30:37,916 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-19 22:30:37,916 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-19 22:30:37,916 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-19 22:30:37,917 INFO L277 CegarLoopResult]: At program point L579(lines 579 596) the Hoare annotation is: true [2020-10-19 22:30:37,917 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,917 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-19 22:30:37,918 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-19 22:30:37,919 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,920 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-19 22:30:37,921 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-19 22:30:37,922 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-19 22:30:37,923 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-19 22:30:37,923 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-19 22:30:37,923 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,923 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse1 (not .cse6)) (.cse2 (not .cse4)) (.cse8 (<= ~a16~0 4)) (.cse5 (= ~a7~0 0)) (.cse9 (<= ~a21~0 0)) (.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse7 (<= 15 ~a8~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6) (and .cse1 .cse2 .cse7) (and .cse8 .cse4 .cse6) (and .cse8 .cse9) (and .cse3 .cse0 .cse4 .cse5) (and (not (= ~a7~0 1)) .cse7 .cse6) (and .cse9 .cse4) (and (<= 14 ~a8~0) (or (and .cse3 .cse0 .cse4) (and .cse3 .cse4 .cse7)))))) [2020-10-19 22:30:37,923 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-19 22:30:37,924 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-19 22:30:37,925 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-19 22:30:37,925 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-19 22:30:37,925 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-19 22:30:37,925 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-19 22:30:37,925 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:30:37,926 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-19 22:30:37,926 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,926 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-19 22:30:37,939 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-19 22:30:37,940 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,941 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,942 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,942 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,942 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-19 22:30:37,942 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,942 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-19 22:30:37,943 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-19 22:30:37,944 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-19 22:30:37,945 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:30:37,945 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-19 22:30:37,945 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,945 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:37,946 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-19 22:30:37,947 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-19 22:30:37,948 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-19 22:30:37,949 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-19 22:30:38,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:30:38 BoogieIcfgContainer [2020-10-19 22:30:38,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:30:38,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:30:38,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:30:38,004 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:30:38,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:25" (3/4) ... [2020-10-19 22:30:38,013 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:30:38,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 22:30:38,049 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:30:38,051 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:30:38,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:30:38,288 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:30:38,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:30:38,291 INFO L168 Benchmark]: Toolchain (without parser) took 15004.58 ms. Allocated memory was 37.7 MB in the beginning and 172.5 MB in the end (delta: 134.7 MB). Free memory was 19.3 MB in the beginning and 119.4 MB in the end (delta: -100.1 MB). Peak memory consumption was 34.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,291 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 35.1 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:30:38,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.36 ms. Allocated memory was 37.7 MB in the beginning and 47.7 MB in the end (delta: 10.0 MB). Free memory was 18.4 MB in the beginning and 23.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.52 ms. Allocated memory is still 47.7 MB. Free memory was 23.1 MB in the beginning and 17.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,293 INFO L168 Benchmark]: Boogie Preprocessor took 87.95 ms. Allocated memory is still 47.7 MB. Free memory was 17.4 MB in the beginning and 12.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,293 INFO L168 Benchmark]: RCFGBuilder took 1314.15 ms. Allocated memory was 47.7 MB in the beginning and 57.7 MB in the end (delta: 10.0 MB). Free memory was 12.4 MB in the beginning and 11.6 MB in the end (delta: 889.0 kB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,294 INFO L168 Benchmark]: TraceAbstraction took 12559.20 ms. Allocated memory was 57.7 MB in the beginning and 172.5 MB in the end (delta: 114.8 MB). Free memory was 11.1 MB in the beginning and 139.8 MB in the end (delta: -128.7 MB). Peak memory consumption was 101.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,294 INFO L168 Benchmark]: Witness Printer took 285.33 ms. Allocated memory is still 172.5 MB. Free memory was 139.8 MB in the beginning and 119.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:38,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 35.1 MB. Free memory is still 12.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 651.36 ms. Allocated memory was 37.7 MB in the beginning and 47.7 MB in the end (delta: 10.0 MB). Free memory was 18.4 MB in the beginning and 23.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 95.52 ms. Allocated memory is still 47.7 MB. Free memory was 23.1 MB in the beginning and 17.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 87.95 ms. Allocated memory is still 47.7 MB. Free memory was 17.4 MB in the beginning and 12.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1314.15 ms. Allocated memory was 47.7 MB in the beginning and 57.7 MB in the end (delta: 10.0 MB). Free memory was 12.4 MB in the beginning and 11.6 MB in the end (delta: 889.0 kB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12559.20 ms. Allocated memory was 57.7 MB in the beginning and 172.5 MB in the end (delta: 114.8 MB). Free memory was 11.1 MB in the beginning and 139.8 MB in the end (delta: -128.7 MB). Peak memory consumption was 101.3 MB. Max. memory is 14.3 GB. * Witness Printer took 285.33 ms. Allocated memory is still 172.5 MB. Free memory was 139.8 MB in the beginning and 119.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 579]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && a20 == 1) && 15 <= a8))) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((((((a16 <= 5 && !(a17 == 1)) && !(a20 == 1)) || (((a21 == 1 && a20 == 1) && a7 == 0) && a17 == 1)) || ((!(a17 == 1) && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 4 && a20 == 1) && a17 == 1)) || (a16 <= 4 && a21 <= 0)) || (((a21 == 1 && a16 <= 5) && a20 == 1) && a7 == 0)) || ((!(a7 == 1) && 15 <= a8) && a17 == 1)) || (a21 <= 0 && a20 == 1)) || (14 <= a8 && (((a21 == 1 && a16 <= 5) && a20 == 1) || ((a21 == 1 && a20 == 1) && 15 <= a8))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 7.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1797 SDslu, 71 SDs, 0 SdLazy, 4321 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2755occurred 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: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 2098 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 223 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1330 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 2243 NumberOfCodeBlocks, 2243 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2227 ConstructedInterpolants, 0 QuantifiedInterpolants, 647791 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1538 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 1607/1619 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...