./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label45.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_label45.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 2f9a3cb5a02275ad54336cc5d8b0a529356838d9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:30:29,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:30:29,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:30:29,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:30:29,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:30:29,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:30:29,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:30:29,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:30:29,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:30:29,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:30:29,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:30:29,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:30:29,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:30:29,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:30:29,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:30:29,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:30:29,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:30:29,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:30:29,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:30:29,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:30:29,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:30:29,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:30:29,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:30:29,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:30:29,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:30:29,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:30:29,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:30:29,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:30:29,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:30:29,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:30:29,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:30:29,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:30:29,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:30:29,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:30:29,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:30:29,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:30:29,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:30:29,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:30:29,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:30:29,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:30:29,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:30:29,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:30:29,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:30:29,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:30:29,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:30:29,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:30:29,230 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:30:29,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:30:29,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:30:29,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:30:29,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:30:29,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:30:29,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:30:29,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:30:29,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:30:29,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:30:29,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:30:29,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:30:29,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:30:29,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:30:29,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:30:29,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:30:29,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:30:29,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:30:29,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:30:29,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:30:29,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:30:29,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:30:29,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:30:29,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:30:29,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:30:29,237 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 -> 2f9a3cb5a02275ad54336cc5d8b0a529356838d9 [2020-10-19 22:30:29,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:30:29,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:30:29,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:30:29,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:30:29,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:30:29,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2020-10-19 22:30:29,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af4dbae2/a477a14116194266bf71f3a7aa0ad150/FLAG9c983b8ff [2020-10-19 22:30:30,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:30:30,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label45.c [2020-10-19 22:30:30,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af4dbae2/a477a14116194266bf71f3a7aa0ad150/FLAG9c983b8ff [2020-10-19 22:30:30,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9af4dbae2/a477a14116194266bf71f3a7aa0ad150 [2020-10-19 22:30:30,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:30:30,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:30:30,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:30:30,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:30:30,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:30:30,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:30:30" (1/1) ... [2020-10-19 22:30:30,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e05781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:30, skipping insertion in model container [2020-10-19 22:30:30,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:30:30" (1/1) ... [2020-10-19 22:30:30,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:30:30,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:30:31,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:30:31,025 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:30:31,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:30:31,160 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:30:31,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31 WrapperNode [2020-10-19 22:30:31,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:30:31,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:30:31,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:30:31,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:30:31,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:30:31,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:30:31,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:30:31,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:30:31,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (1/1) ... [2020-10-19 22:30:31,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:30:31,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:30:31,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:30:31,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:30:31,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (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 22:30:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:30:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:30:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:30:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:30:32,827 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:30:32,828 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:30:32,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:32 BoogieIcfgContainer [2020-10-19 22:30:32,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:30:32,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:30:32,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:30:32,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:30:32,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:30:30" (1/3) ... [2020-10-19 22:30:32,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@927f5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:30:32, skipping insertion in model container [2020-10-19 22:30:32,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:30:31" (2/3) ... [2020-10-19 22:30:32,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@927f5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:30:32, skipping insertion in model container [2020-10-19 22:30:32,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:32" (3/3) ... [2020-10-19 22:30:32,840 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label45.c [2020-10-19 22:30:32,853 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:30:32,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:30:32,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:30:32,902 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:30:32,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:30:32,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:30:32,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:30:32,903 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:30:32,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:30:32,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:30:32,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:30:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-10-19 22:30:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-19 22:30:32,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:32,938 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, 1, 1, 1, 1, 1, 1, 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 22:30:32,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:32,946 INFO L82 PathProgramCache]: Analyzing trace with hash -286323610, now seen corresponding path program 1 times [2020-10-19 22:30:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:32,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323823465] [2020-10-19 22:30:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:33,621 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 22:30:33,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323823465] [2020-10-19 22:30:33,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:33,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:33,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625873441] [2020-10-19 22:30:33,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:33,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:33,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:33,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:33,649 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-10-19 22:30:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:34,538 INFO L93 Difference]: Finished difference Result 529 states and 916 transitions. [2020-10-19 22:30:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:34,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-10-19 22:30:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:34,559 INFO L225 Difference]: With dead ends: 529 [2020-10-19 22:30:34,559 INFO L226 Difference]: Without dead ends: 266 [2020-10-19 22:30:34,565 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 22:30:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-19 22:30:34,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-10-19 22:30:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-19 22:30:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2020-10-19 22:30:34,629 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 117 [2020-10-19 22:30:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:34,630 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2020-10-19 22:30:34,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2020-10-19 22:30:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-19 22:30:34,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:34,635 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, 1, 1, 1, 1, 1, 1, 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 22:30:34,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:30:34,636 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1320516172, now seen corresponding path program 1 times [2020-10-19 22:30:34,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:34,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120917230] [2020-10-19 22:30:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:34,728 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 22:30:34,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120917230] [2020-10-19 22:30:34,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:34,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:34,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209278387] [2020-10-19 22:30:34,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:34,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:34,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:34,733 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand 3 states. [2020-10-19 22:30:35,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:35,263 INFO L93 Difference]: Finished difference Result 794 states and 1136 transitions. [2020-10-19 22:30:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:35,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-10-19 22:30:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:35,272 INFO L225 Difference]: With dead ends: 794 [2020-10-19 22:30:35,272 INFO L226 Difference]: Without dead ends: 530 [2020-10-19 22:30:35,274 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 22:30:35,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-19 22:30:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2020-10-19 22:30:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-19 22:30:35,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 721 transitions. [2020-10-19 22:30:35,308 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 721 transitions. Word has length 122 [2020-10-19 22:30:35,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:35,309 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 721 transitions. [2020-10-19 22:30:35,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:35,309 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 721 transitions. [2020-10-19 22:30:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-19 22:30:35,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:35,314 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, 1, 1, 1, 1, 1, 1, 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 22:30:35,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:30:35,315 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:35,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1428049558, now seen corresponding path program 1 times [2020-10-19 22:30:35,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:35,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970075102] [2020-10-19 22:30:35,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:35,429 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 22:30:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970075102] [2020-10-19 22:30:35,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:35,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:35,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216286160] [2020-10-19 22:30:35,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:35,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:35,436 INFO L87 Difference]: Start difference. First operand 528 states and 721 transitions. Second operand 3 states. [2020-10-19 22:30:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:36,053 INFO L93 Difference]: Finished difference Result 1578 states and 2158 transitions. [2020-10-19 22:30:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:36,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-10-19 22:30:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:36,060 INFO L225 Difference]: With dead ends: 1578 [2020-10-19 22:30:36,060 INFO L226 Difference]: Without dead ends: 1052 [2020-10-19 22:30:36,062 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 22:30:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2020-10-19 22:30:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 1052. [2020-10-19 22:30:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-19 22:30:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1365 transitions. [2020-10-19 22:30:36,107 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1365 transitions. Word has length 126 [2020-10-19 22:30:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:36,108 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1365 transitions. [2020-10-19 22:30:36,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1365 transitions. [2020-10-19 22:30:36,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-19 22:30:36,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:36,116 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, 1, 1, 1, 1, 1, 1, 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 22:30:36,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:30:36,116 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:36,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:36,117 INFO L82 PathProgramCache]: Analyzing trace with hash 164685601, now seen corresponding path program 1 times [2020-10-19 22:30:36,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:36,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29321020] [2020-10-19 22:30:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:36,222 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 22:30:36,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29321020] [2020-10-19 22:30:36,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:36,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:36,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16072898] [2020-10-19 22:30:36,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:30:36,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:36,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:30:36,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:30:36,225 INFO L87 Difference]: Start difference. First operand 1052 states and 1365 transitions. Second operand 4 states. [2020-10-19 22:30:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:37,198 INFO L93 Difference]: Finished difference Result 2626 states and 3384 transitions. [2020-10-19 22:30:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:30:37,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-19 22:30:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:37,206 INFO L225 Difference]: With dead ends: 2626 [2020-10-19 22:30:37,206 INFO L226 Difference]: Without dead ends: 1576 [2020-10-19 22:30:37,208 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 22:30:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-19 22:30:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2020-10-19 22:30:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-19 22:30:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1657 transitions. [2020-10-19 22:30:37,240 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1657 transitions. Word has length 129 [2020-10-19 22:30:37,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:37,240 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1657 transitions. [2020-10-19 22:30:37,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:30:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1657 transitions. [2020-10-19 22:30:37,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-19 22:30:37,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:37,244 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, 1, 1, 1, 1, 1, 1, 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 22:30:37,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:30:37,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:37,245 INFO L82 PathProgramCache]: Analyzing trace with hash 676955088, now seen corresponding path program 1 times [2020-10-19 22:30:37,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:37,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219775399] [2020-10-19 22:30:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:37,298 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 22:30:37,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219775399] [2020-10-19 22:30:37,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:37,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:37,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39845361] [2020-10-19 22:30:37,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:37,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:37,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:37,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:37,301 INFO L87 Difference]: Start difference. First operand 1314 states and 1657 transitions. Second operand 3 states. [2020-10-19 22:30:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:37,874 INFO L93 Difference]: Finished difference Result 3543 states and 4507 transitions. [2020-10-19 22:30:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:37,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-10-19 22:30:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:37,887 INFO L225 Difference]: With dead ends: 3543 [2020-10-19 22:30:37,887 INFO L226 Difference]: Without dead ends: 2231 [2020-10-19 22:30:37,890 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 22:30:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-19 22:30:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1838. [2020-10-19 22:30:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-10-19 22:30:37,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2351 transitions. [2020-10-19 22:30:37,935 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2351 transitions. Word has length 130 [2020-10-19 22:30:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:37,936 INFO L481 AbstractCegarLoop]: Abstraction has 1838 states and 2351 transitions. [2020-10-19 22:30:37,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2351 transitions. [2020-10-19 22:30:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-19 22:30:37,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:37,941 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, 1, 1, 1, 1, 1, 1, 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 22:30:37,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:30:37,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:37,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:37,942 INFO L82 PathProgramCache]: Analyzing trace with hash 976640279, now seen corresponding path program 1 times [2020-10-19 22:30:37,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:37,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207223917] [2020-10-19 22:30:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:38,031 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 22:30:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207223917] [2020-10-19 22:30:38,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:38,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:38,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982631240] [2020-10-19 22:30:38,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:38,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:38,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:38,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:38,034 INFO L87 Difference]: Start difference. First operand 1838 states and 2351 transitions. Second operand 3 states. [2020-10-19 22:30:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:38,730 INFO L93 Difference]: Finished difference Result 4067 states and 5165 transitions. [2020-10-19 22:30:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:38,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-10-19 22:30:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:38,744 INFO L225 Difference]: With dead ends: 4067 [2020-10-19 22:30:38,745 INFO L226 Difference]: Without dead ends: 2231 [2020-10-19 22:30:38,748 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 22:30:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-19 22:30:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2020-10-19 22:30:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-19 22:30:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2762 transitions. [2020-10-19 22:30:38,809 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2762 transitions. Word has length 133 [2020-10-19 22:30:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:38,810 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2762 transitions. [2020-10-19 22:30:38,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2762 transitions. [2020-10-19 22:30:38,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-19 22:30:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:38,818 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 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 22:30:38,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:30:38,819 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:38,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2048282979, now seen corresponding path program 1 times [2020-10-19 22:30:38,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:38,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91749217] [2020-10-19 22:30:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 22:30:38,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91749217] [2020-10-19 22:30:38,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:38,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:30:38,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288749107] [2020-10-19 22:30:38,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:30:38,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:38,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:30:38,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:30:38,952 INFO L87 Difference]: Start difference. First operand 2231 states and 2762 transitions. Second operand 4 states. [2020-10-19 22:30:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:39,935 INFO L93 Difference]: Finished difference Result 4591 states and 5671 transitions. [2020-10-19 22:30:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:30:39,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-19 22:30:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:39,950 INFO L225 Difference]: With dead ends: 4591 [2020-10-19 22:30:39,950 INFO L226 Difference]: Without dead ends: 2362 [2020-10-19 22:30:39,956 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 22:30:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-19 22:30:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2100. [2020-10-19 22:30:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-19 22:30:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2559 transitions. [2020-10-19 22:30:40,027 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2559 transitions. Word has length 137 [2020-10-19 22:30:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:40,028 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2559 transitions. [2020-10-19 22:30:40,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:30:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2559 transitions. [2020-10-19 22:30:40,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-19 22:30:40,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:40,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:40,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:30:40,036 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:40,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1846295544, now seen corresponding path program 1 times [2020-10-19 22:30:40,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:40,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68297407] [2020-10-19 22:30:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68297407] [2020-10-19 22:30:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:40,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:40,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712187960] [2020-10-19 22:30:40,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:40,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:40,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:40,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:40,138 INFO L87 Difference]: Start difference. First operand 2100 states and 2559 transitions. Second operand 3 states. [2020-10-19 22:30:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:40,716 INFO L93 Difference]: Finished difference Result 4591 states and 5539 transitions. [2020-10-19 22:30:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:40,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-10-19 22:30:40,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:40,727 INFO L225 Difference]: With dead ends: 4591 [2020-10-19 22:30:40,728 INFO L226 Difference]: Without dead ends: 2231 [2020-10-19 22:30:40,732 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 22:30:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-10-19 22:30:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2020-10-19 22:30:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2020-10-19 22:30:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2516 transitions. [2020-10-19 22:30:40,776 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2516 transitions. Word has length 146 [2020-10-19 22:30:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:40,778 INFO L481 AbstractCegarLoop]: Abstraction has 2231 states and 2516 transitions. [2020-10-19 22:30:40,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2516 transitions. [2020-10-19 22:30:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-19 22:30:40,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:40,807 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:40,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:30:40,807 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:40,808 INFO L82 PathProgramCache]: Analyzing trace with hash -14018494, now seen corresponding path program 1 times [2020-10-19 22:30:40,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:40,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482282371] [2020-10-19 22:30:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:30:40,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482282371] [2020-10-19 22:30:40,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363298338] [2020-10-19 22:30:40,903 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 22:30:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:41,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 22:30:41,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:41,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:41,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383894289] [2020-10-19 22:30:41,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:41,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:41,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:41,106 INFO L87 Difference]: Start difference. First operand 2231 states and 2516 transitions. Second operand 3 states. [2020-10-19 22:30:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:41,594 INFO L93 Difference]: Finished difference Result 5115 states and 5802 transitions. [2020-10-19 22:30:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:41,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-10-19 22:30:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:41,608 INFO L225 Difference]: With dead ends: 5115 [2020-10-19 22:30:41,609 INFO L226 Difference]: Without dead ends: 2886 [2020-10-19 22:30:41,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 22:30:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-10-19 22:30:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2020-10-19 22:30:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2886 states. [2020-10-19 22:30:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3241 transitions. [2020-10-19 22:30:41,667 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3241 transitions. Word has length 150 [2020-10-19 22:30:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:41,668 INFO L481 AbstractCegarLoop]: Abstraction has 2886 states and 3241 transitions. [2020-10-19 22:30:41,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3241 transitions. [2020-10-19 22:30:41,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-19 22:30:41,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:41,675 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:41,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-19 22:30:41,889 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:41,890 INFO L82 PathProgramCache]: Analyzing trace with hash 318123251, now seen corresponding path program 1 times [2020-10-19 22:30:41,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:41,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097318047] [2020-10-19 22:30:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-19 22:30:42,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097318047] [2020-10-19 22:30:42,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440083946] [2020-10-19 22:30:42,004 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 22:30:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:42,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:30:42,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:42,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:42,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548990342] [2020-10-19 22:30:42,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:42,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:42,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:42,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:42,235 INFO L87 Difference]: Start difference. First operand 2886 states and 3241 transitions. Second operand 3 states. [2020-10-19 22:30:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:42,764 INFO L93 Difference]: Finished difference Result 6163 states and 6892 transitions. [2020-10-19 22:30:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:42,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-10-19 22:30:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:42,777 INFO L225 Difference]: With dead ends: 6163 [2020-10-19 22:30:42,777 INFO L226 Difference]: Without dead ends: 3279 [2020-10-19 22:30:42,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 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 22:30:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2020-10-19 22:30:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3148. [2020-10-19 22:30:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-10-19 22:30:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 3466 transitions. [2020-10-19 22:30:42,836 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 3466 transitions. Word has length 166 [2020-10-19 22:30:42,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:42,837 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 3466 transitions. [2020-10-19 22:30:42,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:42,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 3466 transitions. [2020-10-19 22:30:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-19 22:30:42,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:42,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:43,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 22:30:43,058 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:43,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1987542747, now seen corresponding path program 1 times [2020-10-19 22:30:43,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:43,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443954964] [2020-10-19 22:30:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-19 22:30:43,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443954964] [2020-10-19 22:30:43,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:30:43,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 22:30:43,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188133805] [2020-10-19 22:30:43,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:43,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:43,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:43,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:30:43,253 INFO L87 Difference]: Start difference. First operand 3148 states and 3466 transitions. Second operand 3 states. [2020-10-19 22:30:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:43,946 INFO L93 Difference]: Finished difference Result 7211 states and 7973 transitions. [2020-10-19 22:30:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:43,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-10-19 22:30:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:43,968 INFO L225 Difference]: With dead ends: 7211 [2020-10-19 22:30:43,969 INFO L226 Difference]: Without dead ends: 4065 [2020-10-19 22:30:43,976 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 22:30:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2020-10-19 22:30:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 3541. [2020-10-19 22:30:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2020-10-19 22:30:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 3914 transitions. [2020-10-19 22:30:44,097 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 3914 transitions. Word has length 167 [2020-10-19 22:30:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:44,098 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 3914 transitions. [2020-10-19 22:30:44,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 3914 transitions. [2020-10-19 22:30:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-19 22:30:44,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:30:44,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:30:44,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:30:44,115 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:30:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:30:44,116 INFO L82 PathProgramCache]: Analyzing trace with hash -72606576, now seen corresponding path program 1 times [2020-10-19 22:30:44,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:30:44,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838306953] [2020-10-19 22:30:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:30:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-19 22:30:44,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838306953] [2020-10-19 22:30:44,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439734238] [2020-10-19 22:30:44,391 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 22:30:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:30:44,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:30:44,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:30:44,669 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-19 22:30:44,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:30:44,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-19 22:30:44,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770432269] [2020-10-19 22:30:44,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:30:44,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:30:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:30:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:30:44,672 INFO L87 Difference]: Start difference. First operand 3541 states and 3914 transitions. Second operand 3 states. [2020-10-19 22:30:45,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:30:45,181 INFO L93 Difference]: Finished difference Result 7602 states and 8396 transitions. [2020-10-19 22:30:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:30:45,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2020-10-19 22:30:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:30:45,183 INFO L225 Difference]: With dead ends: 7602 [2020-10-19 22:30:45,183 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:30:45,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 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 22:30:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:30:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:30:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:30:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:30:45,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 219 [2020-10-19 22:30:45,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:30:45,196 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:30:45,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:30:45,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:30:45,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:30:45,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 22:30:45,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:30:45,611 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-19 22:30:45,612 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,613 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,614 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,614 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,614 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,614 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-19 22:30:45,614 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-19 22:30:45,615 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-19 22:30:45,615 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-19 22:30:45,615 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-19 22:30:45,615 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-19 22:30:45,615 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,616 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-19 22:30:45,617 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-19 22:30:45,617 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-19 22:30:45,617 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-19 22:30:45,617 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-19 22:30:45,617 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-19 22:30:45,618 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-19 22:30:45,618 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-19 22:30:45,618 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-19 22:30:45,618 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-19 22:30:45,618 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,619 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-19 22:30:45,620 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-19 22:30:45,621 INFO L270 CegarLoopResult]: At program point L576(lines 32 577) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-10-19 22:30:45,621 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,621 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,622 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,622 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,622 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,622 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-19 22:30:45,623 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-19 22:30:45,624 INFO L277 CegarLoopResult]: At program point L579(lines 579 596) the Hoare annotation is: true [2020-10-19 22:30:45,625 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,625 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,625 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,625 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,625 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-19 22:30:45,626 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,627 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-19 22:30:45,628 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-19 22:30:45,629 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-19 22:30:45,630 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-19 22:30:45,630 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-19 22:30:45,630 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-19 22:30:45,630 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-19 22:30:45,630 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-19 22:30:45,631 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,631 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (and .cse0 (= ~a17~0 1)) (and (<= 14 ~a8~0) (<= ~a16~0 5)) (<= ~a16~0 4) (and (<= 6 ~a16~0) .cse0) (<= 15 ~a8~0))) [2020-10-19 22:30:45,631 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,631 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,631 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-19 22:30:45,632 INFO L274 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,633 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-19 22:30:45,634 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-19 22:30:45,635 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,636 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-19 22:30:45,637 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-19 22:30:45,638 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,639 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-19 22:30:45,640 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-19 22:30:45,641 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-19 22:30:45,642 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-19 22:30:45,642 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-19 22:30:45,642 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-19 22:30:45,642 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-19 22:30:45,642 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-19 22:30:45,643 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-19 22:30:45,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:30:45 BoogieIcfgContainer [2020-10-19 22:30:45,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:30:45,665 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:30:45,665 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:30:45,665 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:30:45,666 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:30:32" (3/4) ... [2020-10-19 22:30:45,670 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:30:45,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-19 22:30:45,694 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:30:45,696 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:30:45,697 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:30:45,882 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:30:45,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:30:45,885 INFO L168 Benchmark]: Toolchain (without parser) took 15495.46 ms. Allocated memory was 36.2 MB in the beginning and 162.0 MB in the end (delta: 125.8 MB). Free memory was 8.0 MB in the beginning and 44.4 MB in the end (delta: -36.3 MB). Peak memory consumption was 89.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,886 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 35.7 MB. Free memory was 14.5 MB in the beginning and 14.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.29 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 7.2 MB in the beginning and 21.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.40 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 15.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,888 INFO L168 Benchmark]: Boogie Preprocessor took 116.35 ms. Allocated memory is still 46.1 MB. Free memory was 15.8 MB in the beginning and 11.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,889 INFO L168 Benchmark]: RCFGBuilder took 1456.84 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 11.0 MB in the beginning and 30.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,889 INFO L168 Benchmark]: TraceAbstraction took 12833.23 ms. Allocated memory was 60.8 MB in the beginning and 162.0 MB in the end (delta: 101.2 MB). Free memory was 30.0 MB in the beginning and 65.0 MB in the end (delta: -34.9 MB). Peak memory consumption was 66.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,890 INFO L168 Benchmark]: Witness Printer took 217.32 ms. Allocated memory is still 162.0 MB. Free memory was 65.0 MB in the beginning and 44.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:30:45,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 35.7 MB. Free memory was 14.5 MB in the beginning and 14.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 763.29 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 7.2 MB in the beginning and 21.8 MB in the end (delta: -14.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 95.40 ms. Allocated memory is still 46.1 MB. Free memory was 21.6 MB in the beginning and 15.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 116.35 ms. Allocated memory is still 46.1 MB. Free memory was 15.8 MB in the beginning and 11.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1456.84 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 11.0 MB in the beginning and 30.5 MB in the end (delta: -19.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 12833.23 ms. Allocated memory was 60.8 MB in the beginning and 162.0 MB in the end (delta: 101.2 MB). Free memory was 30.0 MB in the beginning and 65.0 MB in the end (delta: -34.9 MB). Peak memory consumption was 66.2 MB. Max. memory is 14.3 GB. * Witness Printer took 217.32 ms. Allocated memory is still 162.0 MB. Free memory was 65.0 MB in the beginning and 44.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 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: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && a20 == 1)) || 15 <= a8 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((a20 == 1 && a17 == 1) || (14 <= a8 && a16 <= 5)) || a16 <= 4) || (6 <= a16 && 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: 12.5s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 752 SDtfs, 1494 SDslu, 72 SDs, 0 SdLazy, 4390 SolverSat, 794 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3541occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 1574 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 57 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2338 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 2277 NumberOfCodeBlocks, 2277 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2262 ConstructedInterpolants, 0 QuantifiedInterpolants, 728136 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1052 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 660/669 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...