./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem14_label26.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 d75bac50353f9b54df523b936ad65e8376811233 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 20:45:52,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 20:45:52,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 20:45:52,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 20:45:52,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 20:45:52,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 20:45:52,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 20:45:52,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 20:45:52,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 20:45:52,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 20:45:52,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 20:45:52,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 20:45:52,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 20:45:52,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 20:45:52,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 20:45:52,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 20:45:52,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 20:45:52,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 20:45:52,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 20:45:52,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 20:45:52,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 20:45:52,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 20:45:52,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 20:45:52,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 20:45:52,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 20:45:52,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 20:45:52,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 20:45:52,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 20:45:52,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 20:45:52,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 20:45:52,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 20:45:52,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 20:45:52,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 20:45:52,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 20:45:52,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 20:45:52,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 20:45:52,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 20:45:52,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 20:45:52,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 20:45:52,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 20:45:52,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 20:45:52,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 20:45:52,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 20:45:52,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 20:45:52,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 20:45:52,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 20:45:52,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 20:45:52,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 20:45:52,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 20:45:52,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 20:45:52,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 20:45:52,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 20:45:52,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 20:45:52,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 20:45:52,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 20:45:52,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 20:45:52,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 20:45:52,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 20:45:52,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 20:45:52,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 20:45:52,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 20:45:52,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 20:45:52,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 20:45:52,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 20:45:52,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 20:45:52,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 20:45:52,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 20:45:52,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 20:45:52,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 20:45:52,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 20:45:52,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 20:45:52,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d75bac50353f9b54df523b936ad65e8376811233 [2020-10-25 20:45:52,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 20:45:52,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 20:45:52,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 20:45:52,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 20:45:52,805 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 20:45:52,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2020-10-25 20:45:52,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4b8f519/94f501fb7879493b9eff2f03b2ca3290/FLAGef2a2ac91 [2020-10-25 20:45:53,753 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 20:45:53,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label26.c [2020-10-25 20:45:53,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4b8f519/94f501fb7879493b9eff2f03b2ca3290/FLAGef2a2ac91 [2020-10-25 20:45:53,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d4b8f519/94f501fb7879493b9eff2f03b2ca3290 [2020-10-25 20:45:53,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 20:45:53,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 20:45:53,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 20:45:53,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 20:45:53,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 20:45:53,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 08:45:53" (1/1) ... [2020-10-25 20:45:53,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afadf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:53, skipping insertion in model container [2020-10-25 20:45:53,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 08:45:53" (1/1) ... [2020-10-25 20:45:53,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 20:45:54,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 20:45:54,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 20:45:54,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 20:45:54,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 20:45:54,741 INFO L208 MainTranslator]: Completed translation [2020-10-25 20:45:54,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54 WrapperNode [2020-10-25 20:45:54,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 20:45:54,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 20:45:54,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 20:45:54,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 20:45:54,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 20:45:54,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 20:45:54,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 20:45:54,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 20:45:54,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (1/1) ... [2020-10-25 20:45:54,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 20:45:54,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 20:45:54,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 20:45:54,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 20:45:54,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (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 [2020-10-25 20:45:55,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 20:45:55,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 20:45:55,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 20:45:55,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 20:45:56,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 20:45:56,695 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-25 20:45:56,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 08:45:56 BoogieIcfgContainer [2020-10-25 20:45:56,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 20:45:56,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 20:45:56,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 20:45:56,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 20:45:56,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 08:45:53" (1/3) ... [2020-10-25 20:45:56,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1d2007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 08:45:56, skipping insertion in model container [2020-10-25 20:45:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 08:45:54" (2/3) ... [2020-10-25 20:45:56,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1d2007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 08:45:56, skipping insertion in model container [2020-10-25 20:45:56,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 08:45:56" (3/3) ... [2020-10-25 20:45:56,709 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2020-10-25 20:45:56,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 20:45:56,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 20:45:56,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 20:45:56,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 20:45:56,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 20:45:56,780 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 20:45:56,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 20:45:56,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 20:45:56,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 20:45:56,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 20:45:56,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 20:45:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2020-10-25 20:45:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-25 20:45:56,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:45:56,817 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] [2020-10-25 20:45:56,818 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:45:56,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:45:56,825 INFO L82 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2020-10-25 20:45:56,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:45:56,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988298137] [2020-10-25 20:45:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:45:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:45:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 20:45:57,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988298137] [2020-10-25 20:45:57,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 20:45:57,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 20:45:57,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293028707] [2020-10-25 20:45:57,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:45:57,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:45:57,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:45:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 20:45:57,320 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 3 states. [2020-10-25 20:45:58,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:45:58,861 INFO L93 Difference]: Finished difference Result 686 states and 1217 transitions. [2020-10-25 20:45:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:45:58,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-10-25 20:45:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:45:58,879 INFO L225 Difference]: With dead ends: 686 [2020-10-25 20:45:58,879 INFO L226 Difference]: Without dead ends: 360 [2020-10-25 20:45:58,884 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 [2020-10-25 20:45:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-25 20:45:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2020-10-25 20:45:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-10-25 20:45:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2020-10-25 20:45:59,010 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 66 [2020-10-25 20:45:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:45:59,013 INFO L481 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2020-10-25 20:45:59,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:45:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2020-10-25 20:45:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-25 20:45:59,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:45:59,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-25 20:45:59,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 20:45:59,025 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:45:59,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:45:59,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1414713489, now seen corresponding path program 1 times [2020-10-25 20:45:59,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:45:59,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055029436] [2020-10-25 20:45:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:45:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:45:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 20:45:59,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055029436] [2020-10-25 20:45:59,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 20:45:59,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 20:45:59,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434803906] [2020-10-25 20:45:59,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 20:45:59,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:45:59,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 20:45:59,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 20:45:59,323 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand 4 states. [2020-10-25 20:46:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:00,965 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2020-10-25 20:46:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 20:46:00,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-25 20:46:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:00,973 INFO L225 Difference]: With dead ends: 1074 [2020-10-25 20:46:00,973 INFO L226 Difference]: Without dead ends: 716 [2020-10-25 20:46:00,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 20:46:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-25 20:46:01,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2020-10-25 20:46:01,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2020-10-25 20:46:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2020-10-25 20:46:01,015 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 145 [2020-10-25 20:46:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:01,016 INFO L481 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2020-10-25 20:46:01,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 20:46:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2020-10-25 20:46:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-25 20:46:01,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:01,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-25 20:46:01,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 20:46:01,021 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash 401954990, now seen corresponding path program 1 times [2020-10-25 20:46:01,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:01,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492570259] [2020-10-25 20:46:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-25 20:46:01,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492570259] [2020-10-25 20:46:01,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499356365] [2020-10-25 20:46:01,335 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 [2020-10-25 20:46:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:01,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:01,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 20:46:01,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:01,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-10-25 20:46:01,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845356755] [2020-10-25 20:46:01,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:01,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:01,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:01,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 20:46:01,582 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand 3 states. [2020-10-25 20:46:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:02,932 INFO L93 Difference]: Finished difference Result 1964 states and 2499 transitions. [2020-10-25 20:46:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:02,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-10-25 20:46:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:02,943 INFO L225 Difference]: With dead ends: 1964 [2020-10-25 20:46:02,947 INFO L226 Difference]: Without dead ends: 1250 [2020-10-25 20:46:02,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-25 20:46:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-10-25 20:46:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2020-10-25 20:46:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-25 20:46:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1544 transitions. [2020-10-25 20:46:02,991 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1544 transitions. Word has length 171 [2020-10-25 20:46:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:02,992 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1544 transitions. [2020-10-25 20:46:02,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1544 transitions. [2020-10-25 20:46:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-25 20:46:02,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:02,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:03,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 20:46:03,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash 658646531, now seen corresponding path program 1 times [2020-10-25 20:46:03,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:03,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036055378] [2020-10-25 20:46:03,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-25 20:46:03,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036055378] [2020-10-25 20:46:03,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 20:46:03,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 20:46:03,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148116127] [2020-10-25 20:46:03,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 20:46:03,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:03,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 20:46:03,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 20:46:03,479 INFO L87 Difference]: Start difference. First operand 1250 states and 1544 transitions. Second operand 4 states. [2020-10-25 20:46:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:04,778 INFO L93 Difference]: Finished difference Result 2705 states and 3353 transitions. [2020-10-25 20:46:04,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 20:46:04,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-25 20:46:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:04,788 INFO L225 Difference]: With dead ends: 2705 [2020-10-25 20:46:04,789 INFO L226 Difference]: Without dead ends: 1606 [2020-10-25 20:46:04,792 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 [2020-10-25 20:46:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-10-25 20:46:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2020-10-25 20:46:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-10-25 20:46:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1801 transitions. [2020-10-25 20:46:04,846 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1801 transitions. Word has length 225 [2020-10-25 20:46:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:04,848 INFO L481 AbstractCegarLoop]: Abstraction has 1606 states and 1801 transitions. [2020-10-25 20:46:04,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 20:46:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1801 transitions. [2020-10-25 20:46:04,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-25 20:46:04,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:04,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-10-25 20:46:04,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 20:46:04,855 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:04,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1789064688, now seen corresponding path program 1 times [2020-10-25 20:46:04,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:04,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771079501] [2020-10-25 20:46:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 239 proven. 130 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-25 20:46:05,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771079501] [2020-10-25 20:46:05,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633451771] [2020-10-25 20:46:05,571 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 [2020-10-25 20:46:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:05,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:05,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-25 20:46:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:06,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-10-25 20:46:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076846061] [2020-10-25 20:46:06,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:06,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:06,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 20:46:06,078 INFO L87 Difference]: Start difference. First operand 1606 states and 1801 transitions. Second operand 3 states. [2020-10-25 20:46:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:06,996 INFO L93 Difference]: Finished difference Result 3388 states and 3901 transitions. [2020-10-25 20:46:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:06,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 352 [2020-10-25 20:46:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:07,008 INFO L225 Difference]: With dead ends: 3388 [2020-10-25 20:46:07,008 INFO L226 Difference]: Without dead ends: 1962 [2020-10-25 20:46:07,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 20:46:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2020-10-25 20:46:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2020-10-25 20:46:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2020-10-25 20:46:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2018 transitions. [2020-10-25 20:46:07,067 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2018 transitions. Word has length 352 [2020-10-25 20:46:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:07,068 INFO L481 AbstractCegarLoop]: Abstraction has 1784 states and 2018 transitions. [2020-10-25 20:46:07,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:07,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2018 transitions. [2020-10-25 20:46:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-25 20:46:07,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:07,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-25 20:46:07,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:07,292 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 753351046, now seen corresponding path program 1 times [2020-10-25 20:46:07,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:07,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224671620] [2020-10-25 20:46:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 322 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 20:46:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224671620] [2020-10-25 20:46:07,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199397840] [2020-10-25 20:46:07,859 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 [2020-10-25 20:46:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:08,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:08,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-25 20:46:08,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:08,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-25 20:46:08,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044201024] [2020-10-25 20:46:08,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:08,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:08,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:08,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:08,170 INFO L87 Difference]: Start difference. First operand 1784 states and 2018 transitions. Second operand 3 states. [2020-10-25 20:46:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:09,200 INFO L93 Difference]: Finished difference Result 3922 states and 4505 transitions. [2020-10-25 20:46:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:09,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2020-10-25 20:46:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:09,216 INFO L225 Difference]: With dead ends: 3922 [2020-10-25 20:46:09,216 INFO L226 Difference]: Without dead ends: 2318 [2020-10-25 20:46:09,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2020-10-25 20:46:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2318. [2020-10-25 20:46:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2318 states. [2020-10-25 20:46:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2601 transitions. [2020-10-25 20:46:09,307 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2601 transitions. Word has length 356 [2020-10-25 20:46:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:09,307 INFO L481 AbstractCegarLoop]: Abstraction has 2318 states and 2601 transitions. [2020-10-25 20:46:09,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2601 transitions. [2020-10-25 20:46:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-10-25 20:46:09,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:09,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:09,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:09,529 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:09,530 INFO L82 PathProgramCache]: Analyzing trace with hash -973974359, now seen corresponding path program 1 times [2020-10-25 20:46:09,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:09,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899234114] [2020-10-25 20:46:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 375 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 20:46:10,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899234114] [2020-10-25 20:46:10,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466287703] [2020-10-25 20:46:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:10,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:10,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-25 20:46:10,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:10,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-25 20:46:10,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137762479] [2020-10-25 20:46:10,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:10,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:10,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:10,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:10,328 INFO L87 Difference]: Start difference. First operand 2318 states and 2601 transitions. Second operand 3 states. [2020-10-25 20:46:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:11,184 INFO L93 Difference]: Finished difference Result 4812 states and 5491 transitions. [2020-10-25 20:46:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:11,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 385 [2020-10-25 20:46:11,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:11,199 INFO L225 Difference]: With dead ends: 4812 [2020-10-25 20:46:11,199 INFO L226 Difference]: Without dead ends: 2674 [2020-10-25 20:46:11,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-10-25 20:46:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2496. [2020-10-25 20:46:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-10-25 20:46:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2860 transitions. [2020-10-25 20:46:11,258 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2860 transitions. Word has length 385 [2020-10-25 20:46:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:11,259 INFO L481 AbstractCegarLoop]: Abstraction has 2496 states and 2860 transitions. [2020-10-25 20:46:11,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2860 transitions. [2020-10-25 20:46:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-25 20:46:11,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:11,265 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:11,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:11,479 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1208919337, now seen corresponding path program 1 times [2020-10-25 20:46:11,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:11,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802207510] [2020-10-25 20:46:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 590 proven. 130 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-25 20:46:12,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802207510] [2020-10-25 20:46:12,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838262104] [2020-10-25 20:46:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:12,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:12,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-25 20:46:12,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:12,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-25 20:46:12,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803909350] [2020-10-25 20:46:12,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:12,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:12,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:12,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:12,449 INFO L87 Difference]: Start difference. First operand 2496 states and 2860 transitions. Second operand 3 states. [2020-10-25 20:46:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:13,222 INFO L93 Difference]: Finished difference Result 4812 states and 5539 transitions. [2020-10-25 20:46:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:13,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 457 [2020-10-25 20:46:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:13,234 INFO L225 Difference]: With dead ends: 4812 [2020-10-25 20:46:13,235 INFO L226 Difference]: Without dead ends: 2496 [2020-10-25 20:46:13,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2020-10-25 20:46:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2496. [2020-10-25 20:46:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-10-25 20:46:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 2797 transitions. [2020-10-25 20:46:13,290 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 2797 transitions. Word has length 457 [2020-10-25 20:46:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:13,291 INFO L481 AbstractCegarLoop]: Abstraction has 2496 states and 2797 transitions. [2020-10-25 20:46:13,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 2797 transitions. [2020-10-25 20:46:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-25 20:46:13,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:13,298 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:13,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:13,512 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1482820465, now seen corresponding path program 1 times [2020-10-25 20:46:13,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:13,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012323710] [2020-10-25 20:46:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-25 20:46:13,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012323710] [2020-10-25 20:46:13,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 20:46:13,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 20:46:13,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911292751] [2020-10-25 20:46:13,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:13,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:13,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:13,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 20:46:13,867 INFO L87 Difference]: Start difference. First operand 2496 states and 2797 transitions. Second operand 3 states. [2020-10-25 20:46:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:14,618 INFO L93 Difference]: Finished difference Result 5702 states and 6451 transitions. [2020-10-25 20:46:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:14,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 462 [2020-10-25 20:46:14,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:14,633 INFO L225 Difference]: With dead ends: 5702 [2020-10-25 20:46:14,634 INFO L226 Difference]: Without dead ends: 3386 [2020-10-25 20:46:14,637 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 [2020-10-25 20:46:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-10-25 20:46:14,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3386. [2020-10-25 20:46:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-10-25 20:46:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3792 transitions. [2020-10-25 20:46:14,705 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3792 transitions. Word has length 462 [2020-10-25 20:46:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:14,706 INFO L481 AbstractCegarLoop]: Abstraction has 3386 states and 3792 transitions. [2020-10-25 20:46:14,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3792 transitions. [2020-10-25 20:46:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-25 20:46:14,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:14,736 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:14,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 20:46:14,737 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:14,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1765962135, now seen corresponding path program 1 times [2020-10-25 20:46:14,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:14,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478751106] [2020-10-25 20:46:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 677 proven. 130 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-25 20:46:15,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478751106] [2020-10-25 20:46:15,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266740201] [2020-10-25 20:46:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:15,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:15,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-25 20:46:15,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:15,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-25 20:46:15,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490941200] [2020-10-25 20:46:15,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:15,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:15,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:15,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:15,869 INFO L87 Difference]: Start difference. First operand 3386 states and 3792 transitions. Second operand 3 states. [2020-10-25 20:46:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:16,641 INFO L93 Difference]: Finished difference Result 4812 states and 5389 transitions. [2020-10-25 20:46:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:16,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 486 [2020-10-25 20:46:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:16,662 INFO L225 Difference]: With dead ends: 4812 [2020-10-25 20:46:16,662 INFO L226 Difference]: Without dead ends: 4810 [2020-10-25 20:46:16,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2020-10-25 20:46:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 3564. [2020-10-25 20:46:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3564 states. [2020-10-25 20:46:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4007 transitions. [2020-10-25 20:46:16,744 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4007 transitions. Word has length 486 [2020-10-25 20:46:16,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:16,745 INFO L481 AbstractCegarLoop]: Abstraction has 3564 states and 4007 transitions. [2020-10-25 20:46:16,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4007 transitions. [2020-10-25 20:46:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-25 20:46:16,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 20:46:16,753 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 20:46:16,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:16,969 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 20:46:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 20:46:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash -438308529, now seen corresponding path program 1 times [2020-10-25 20:46:16,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 20:46:16,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888937414] [2020-10-25 20:46:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 20:46:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 644 proven. 130 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-25 20:46:17,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888937414] [2020-10-25 20:46:17,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877551905] [2020-10-25 20:46:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 20:46:17,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 20:46:17,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 20:46:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2020-10-25 20:46:18,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 20:46:18,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-25 20:46:18,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455700280] [2020-10-25 20:46:18,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 20:46:18,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 20:46:18,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 20:46:18,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:18,169 INFO L87 Difference]: Start difference. First operand 3564 states and 4007 transitions. Second operand 3 states. [2020-10-25 20:46:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 20:46:19,001 INFO L93 Difference]: Finished difference Result 7658 states and 8675 transitions. [2020-10-25 20:46:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 20:46:19,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 493 [2020-10-25 20:46:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 20:46:19,006 INFO L225 Difference]: With dead ends: 7658 [2020-10-25 20:46:19,006 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 20:46:19,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 20:46:19,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 20:46:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 20:46:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 20:46:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 20:46:19,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 493 [2020-10-25 20:46:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 20:46:19,021 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 20:46:19,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 20:46:19,021 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 20:46:19,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 20:46:19,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 20:46:19,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 20:46:19,436 INFO L274 CegarLoopResult]: For program point L696(lines 696 872) no Hoare annotation was computed. [2020-10-25 20:46:19,436 INFO L274 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L301(lines 301 872) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L434(lines 434 872) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L368(lines 368 872) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L170-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L104-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L38-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L237(lines 237 872) no Hoare annotation was computed. [2020-10-25 20:46:19,437 INFO L274 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L766(lines 766 872) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L634(lines 634 872) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L502(lines 502 872) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L833(lines 833 872) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L173-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L107-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L41-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L702(lines 702 872) no Hoare annotation was computed. [2020-10-25 20:46:19,438 INFO L274 CegarLoopResult]: For program point L570(lines 570 872) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L307(lines 307 872) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L440(lines 440 872) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L374(lines 374 872) no Hoare annotation was computed. [2020-10-25 20:46:19,439 INFO L274 CegarLoopResult]: For program point L176-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L110-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L44-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L243(lines 243 872) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L177(line 177) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-10-25 20:46:19,440 INFO L274 CegarLoopResult]: For program point L640(lines 640 872) no Hoare annotation was computed. [2020-10-25 20:46:19,441 INFO L274 CegarLoopResult]: For program point L508(lines 508 872) no Hoare annotation was computed. [2020-10-25 20:46:19,441 INFO L274 CegarLoopResult]: For program point L839(lines 839 872) no Hoare annotation was computed. [2020-10-25 20:46:19,441 INFO L274 CegarLoopResult]: For program point L773(lines 773 872) no Hoare annotation was computed. [2020-10-25 20:46:19,441 INFO L274 CegarLoopResult]: For program point L575(lines 575 872) no Hoare annotation was computed. [2020-10-25 20:46:19,441 INFO L274 CegarLoopResult]: For program point L179-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L113-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L47-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L708(lines 708 872) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L180(line 180) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L313(lines 313 872) no Hoare annotation was computed. [2020-10-25 20:46:19,443 INFO L274 CegarLoopResult]: For program point L446(lines 446 872) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L380(lines 380 872) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L182-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L116-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L50-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L249(lines 249 872) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L844(lines 844 872) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L646(lines 646 872) no Hoare annotation was computed. [2020-10-25 20:46:19,444 INFO L274 CegarLoopResult]: For program point L514(lines 514 872) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L779(lines 779 872) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L581(lines 581 872) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L185-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L119-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L53-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L714(lines 714 872) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L451(lines 451 872) no Hoare annotation was computed. [2020-10-25 20:46:19,445 INFO L274 CegarLoopResult]: For program point L319(lines 319 872) no Hoare annotation was computed. [2020-10-25 20:46:19,446 INFO L274 CegarLoopResult]: For program point L386(lines 386 872) no Hoare annotation was computed. [2020-10-25 20:46:19,446 INFO L274 CegarLoopResult]: For program point L254(lines 254 872) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L188-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L122-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L56-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L189(line 189) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L850(lines 850 872) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L652(lines 652 872) no Hoare annotation was computed. [2020-10-25 20:46:19,447 INFO L274 CegarLoopResult]: For program point L520(lines 520 872) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L785(lines 785 872) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L587(lines 587 872) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L191-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L125-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L59-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L720(lines 720 872) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L456(lines 456 872) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L192(line 192) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-10-25 20:46:19,448 INFO L274 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L325(lines 325 872) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L392(lines 392 872) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L260(lines 260 872) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L194-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L128-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L62-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L195(line 195) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-10-25 20:46:19,449 INFO L274 CegarLoopResult]: For program point L856(lines 856 872) no Hoare annotation was computed. [2020-10-25 20:46:19,450 INFO L274 CegarLoopResult]: For program point L658(lines 658 872) no Hoare annotation was computed. [2020-10-25 20:46:19,450 INFO L274 CegarLoopResult]: For program point L526(lines 526 872) no Hoare annotation was computed. [2020-10-25 20:46:19,450 INFO L274 CegarLoopResult]: For program point L791(lines 791 872) no Hoare annotation was computed. [2020-10-25 20:46:19,451 INFO L274 CegarLoopResult]: For program point L593(lines 593 872) no Hoare annotation was computed. [2020-10-25 20:46:19,451 INFO L274 CegarLoopResult]: For program point L197-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L131-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L65-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L726(lines 726 872) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L462(lines 462 872) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L198(line 198) no Hoare annotation was computed. [2020-10-25 20:46:19,452 INFO L274 CegarLoopResult]: For program point L132(line 132) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L331(lines 331 872) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L398(lines 398 872) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L266(lines 266 872) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L200-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L134-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L68-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L861(lines 861 872) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L201(line 201) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-10-25 20:46:19,453 INFO L274 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L664(lines 664 872) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L532(lines 532 872) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L797(lines 797 872) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L599(lines 599 872) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L203-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L137-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L71-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L732(lines 732 872) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L204(line 204) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-10-25 20:46:19,454 INFO L274 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L469(lines 469 872) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L337(lines 337 872) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L271(lines 271 872) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L404(lines 404 872) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L140-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L74-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L867(lines 867 872) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-10-25 20:46:19,455 INFO L274 CegarLoopResult]: For program point L670(lines 670 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L538(lines 538 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L803(lines 803 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L737(lines 737 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L605(lines 605 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L143-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L77-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L474(lines 474 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L343(lines 343 872) no Hoare annotation was computed. [2020-10-25 20:46:19,456 INFO L274 CegarLoopResult]: For program point L277(lines 277 872) no Hoare annotation was computed. [2020-10-25 20:46:19,457 INFO L274 CegarLoopResult]: For program point L410(lines 410 872) no Hoare annotation was computed. [2020-10-25 20:46:19,457 INFO L274 CegarLoopResult]: For program point L146-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,457 INFO L274 CegarLoopResult]: For program point L80-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,458 INFO L270 CegarLoopResult]: At program point L873(lines 22 874) the Hoare annotation is: (or (<= ~a21~0 7) (<= 9 ~a21~0) (<= 7 ~a15~0) (< 11 ~a12~0)) [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L543(lines 543 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L213(lines 213 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L147(line 147) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L676(lines 676 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L809(lines 809 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L743(lines 743 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L611(lines 611 872) no Hoare annotation was computed. [2020-10-25 20:46:19,459 INFO L274 CegarLoopResult]: For program point L149-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L83-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L277 CegarLoopResult]: At program point L876(lines 876 892) the Hoare annotation is: true [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L480(lines 480 872) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L282(lines 282 872) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L679(lines 679 872) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L349(lines 349 872) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point L416(lines 416 872) no Hoare annotation was computed. [2020-10-25 20:46:19,460 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L152-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L86-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L549(lines 549 872) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L219(lines 219 872) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L749(lines 749 872) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L617(lines 617 872) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L155-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L89-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,461 INFO L274 CegarLoopResult]: For program point L23(lines 23 25) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L23-2(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L816(lines 816 872) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L270 CegarLoopResult]: At program point L882-2(lines 882 891) the Hoare annotation is: (or (<= ~a21~0 7) (<= 9 ~a21~0) (<= 7 ~a15~0) (< 11 ~a12~0)) [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L486(lines 486 872) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L288(lines 288 872) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-10-25 20:46:19,462 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L685(lines 685 872) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L355(lines 355 872) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L554(lines 554 872) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L422(lines 422 872) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L158-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L92-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L26-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L225(lines 225 872) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L159(line 159) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-10-25 20:46:19,463 INFO L274 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L754(lines 754 872) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L887(line 887) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L821(lines 821 872) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L623(lines 623 872) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L557(lines 557 872) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L161-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L95-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L29-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,464 INFO L274 CegarLoopResult]: For program point L690(lines 690 872) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L492(lines 492 872) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L361(lines 361 872) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L295(lines 295 872) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L428(lines 428 872) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L164-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L98-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L32-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,465 INFO L274 CegarLoopResult]: For program point L231(lines 231 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L760(lines 760 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L628(lines 628 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L827(lines 827 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L563(lines 563 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L497(lines 497 872) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L167-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,466 INFO L274 CegarLoopResult]: For program point L101-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,467 INFO L274 CegarLoopResult]: For program point L35-1(lines 22 874) no Hoare annotation was computed. [2020-10-25 20:46:19,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 08:46:19 BoogieIcfgContainer [2020-10-25 20:46:19,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 20:46:19,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 20:46:19,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 20:46:19,500 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 20:46:19,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 08:45:56" (3/4) ... [2020-10-25 20:46:19,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 20:46:19,549 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-10-25 20:46:19,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 20:46:19,553 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 20:46:19,554 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 20:46:19,790 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 20:46:19,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 20:46:19,796 INFO L168 Benchmark]: Toolchain (without parser) took 25853.74 ms. Allocated memory was 50.3 MB in the beginning and 767.6 MB in the end (delta: 717.2 MB). Free memory was 25.3 MB in the beginning and 518.2 MB in the end (delta: -492.9 MB). Peak memory consumption was 226.5 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,797 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 20:46:19,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 795.72 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 37.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.84 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 27.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,800 INFO L168 Benchmark]: Boogie Preprocessor took 122.56 ms. Allocated memory is still 60.8 MB. Free memory was 27.7 MB in the beginning and 32.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,801 INFO L168 Benchmark]: RCFGBuilder took 1700.73 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 32.6 MB in the beginning and 44.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,801 INFO L168 Benchmark]: TraceAbstraction took 22799.11 ms. Allocated memory was 90.2 MB in the beginning and 767.6 MB in the end (delta: 677.4 MB). Free memory was 44.8 MB in the beginning and 537.3 MB in the end (delta: -492.5 MB). Peak memory consumption was 185.6 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,802 INFO L168 Benchmark]: Witness Printer took 293.39 ms. Allocated memory is still 767.6 MB. Free memory was 537.3 MB in the beginning and 518.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-10-25 20:46:19,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 50.3 MB. Free memory is still 28.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 795.72 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.7 MB in the beginning and 37.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 128.84 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 27.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 122.56 ms. Allocated memory is still 60.8 MB. Free memory was 27.7 MB in the beginning and 32.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1700.73 ms. Allocated memory was 60.8 MB in the beginning and 90.2 MB in the end (delta: 29.4 MB). Free memory was 32.6 MB in the beginning and 44.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22799.11 ms. Allocated memory was 90.2 MB in the beginning and 767.6 MB in the end (delta: 677.4 MB). Free memory was 44.8 MB in the beginning and 537.3 MB in the end (delta: -492.5 MB). Peak memory consumption was 185.6 MB. Max. memory is 16.1 GB. * Witness Printer took 293.39 ms. Allocated memory is still 767.6 MB. Free memory was 537.3 MB in the beginning and 518.2 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 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: 22]: Loop Invariant Derived loop invariant: ((a21 <= 7 || 9 <= a21) || 7 <= a15) || 11 < a12 - InvariantResult [Line: 876]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 882]: Loop Invariant Derived loop invariant: ((a21 <= 7 || 9 <= a21) || 7 <= a15) || 11 < a12 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 246 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.4s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1476 SDtfs, 1618 SDslu, 59 SDs, 0 SdLazy, 5819 SolverSat, 898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2737 GetRequests, 2698 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3564occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1602 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 55 NumberOfFragments, 27 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1028 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 6298 NumberOfCodeBlocks, 6298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6280 ConstructedInterpolants, 0 QuantifiedInterpolants, 8757579 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3654 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 8129/8966 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...