./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/loop-lit/gj2007.i -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 05ff204c30e7b81bf33f8a8c483906be16c1e587 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:01:18,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:01:18,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:01:18,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:01:18,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:01:18,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:01:18,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:01:18,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:01:18,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:01:18,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:01:18,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:01:18,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:01:18,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:01:18,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:01:18,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:01:18,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:01:18,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:01:18,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:01:18,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:01:18,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:01:18,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:01:18,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:01:18,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:01:18,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:01:18,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:01:18,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:01:18,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:01:18,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:01:18,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:01:18,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:01:18,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:01:18,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:01:18,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:01:18,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:01:18,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:01:18,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:01:18,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:01:18,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:01:18,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:01:18,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:01:18,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:01:18,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:01:18,514 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:01:18,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:01:18,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:01:18,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:01:18,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:01:18,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:01:18,515 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:01:18,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:01:18,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:01:18,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:01:18,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:01:18,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:01:18,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:01:18,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:01:18,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:01:18,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:01:18,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:01:18,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:01:18,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05ff204c30e7b81bf33f8a8c483906be16c1e587 [2021-08-29 11:01:18,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:01:18,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:01:18,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:01:18,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:01:18,811 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:01:18,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.i [2021-08-29 11:01:18,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390486e3b/d87d38d40f2441378bbfe0dd5c71a002/FLAGa30417011 [2021-08-29 11:01:19,289 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:01:19,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i [2021-08-29 11:01:19,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390486e3b/d87d38d40f2441378bbfe0dd5c71a002/FLAGa30417011 [2021-08-29 11:01:19,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390486e3b/d87d38d40f2441378bbfe0dd5c71a002 [2021-08-29 11:01:19,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:01:19,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:01:19,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:01:19,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:01:19,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:01:19,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487593c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19, skipping insertion in model container [2021-08-29 11:01:19,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:01:19,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:01:19,758 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2021-08-29 11:01:19,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:01:19,767 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:01:19,805 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2021-08-29 11:01:19,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:01:19,819 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:01:19,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19 WrapperNode [2021-08-29 11:01:19,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:01:19,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:01:19,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:01:19,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:01:19,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:01:19,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:01:19,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:01:19,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:01:19,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:01:19,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:01:19,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:01:19,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:01:19,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (1/1) ... [2021-08-29 11:01:19,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:01:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:19,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 11:01:19,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 11:01:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:01:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:01:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:01:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:01:20,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:01:20,010 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:01:20,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:20 BoogieIcfgContainer [2021-08-29 11:01:20,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:01:20,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:01:20,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:01:20,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:01:20,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:01:19" (1/3) ... [2021-08-29 11:01:20,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c01ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:01:20, skipping insertion in model container [2021-08-29 11:01:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:01:19" (2/3) ... [2021-08-29 11:01:20,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c01ea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:01:20, skipping insertion in model container [2021-08-29 11:01:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:20" (3/3) ... [2021-08-29 11:01:20,017 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007.i [2021-08-29 11:01:20,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:01:20,021 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:01:20,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:01:20,063 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:01:20,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:01:20,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 11:01:20,076 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:20,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 11:01:20,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:20,083 INFO L82 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-08-29 11:01:20,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:20,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063523528] [2021-08-29 11:01:20,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:20,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:20,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063523528] [2021-08-29 11:01:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063523528] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:01:20,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:01:20,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:01:20,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739416207] [2021-08-29 11:01:20,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:01:20,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:01:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:01:20,215 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:20,273 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-08-29 11:01:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:01:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 11:01:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:20,280 INFO L225 Difference]: With dead ends: 20 [2021-08-29 11:01:20,280 INFO L226 Difference]: Without dead ends: 8 [2021-08-29 11:01:20,282 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:01:20,284 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.35ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:20,297 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.14ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 50.35ms Time] [2021-08-29 11:01:20,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-29 11:01:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-29 11:01:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-08-29 11:01:20,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-08-29 11:01:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:20,326 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-08-29 11:01:20,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,327 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-08-29 11:01:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 11:01:20,328 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:20,328 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 11:01:20,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:01:20,329 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-08-29 11:01:20,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:20,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981622576] [2021-08-29 11:01:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:20,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:20,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981622576] [2021-08-29 11:01:20,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981622576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:01:20,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:01:20,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 11:01:20,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067030830] [2021-08-29 11:01:20,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 11:01:20,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 11:01:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:01:20,386 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:20,415 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-08-29 11:01:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 11:01:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-29 11:01:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:20,415 INFO L225 Difference]: With dead ends: 16 [2021-08-29 11:01:20,416 INFO L226 Difference]: Without dead ends: 10 [2021-08-29 11:01:20,416 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:01:20,417 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.06ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:20,417 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 18 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 25.06ms Time] [2021-08-29 11:01:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-08-29 11:01:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-08-29 11:01:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-08-29 11:01:20,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-08-29 11:01:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:20,420 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-08-29 11:01:20,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-08-29 11:01:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:01:20,420 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:20,420 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:20,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 11:01:20,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:20,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:20,421 INFO L82 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2021-08-29 11:01:20,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:20,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798516061] [2021-08-29 11:01:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:20,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:20,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798516061] [2021-08-29 11:01:20,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798516061] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:20,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662897205] [2021-08-29 11:01:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:20,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:20,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:20,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:01:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 11:01:20,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:20,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:20,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662897205] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:20,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-29 11:01:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372349257] [2021-08-29 11:01:20,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 11:01:20,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 11:01:20,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:01:20,585 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:20,616 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-08-29 11:01:20,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:01:20,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 11:01:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:20,617 INFO L225 Difference]: With dead ends: 21 [2021-08-29 11:01:20,617 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 11:01:20,617 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.56ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:01:20,618 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.97ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:20,619 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 23.97ms Time] [2021-08-29 11:01:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 11:01:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-29 11:01:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-29 11:01:20,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-08-29 11:01:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:20,622 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-29 11:01:20,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-29 11:01:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 11:01:20,623 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:20,623 INFO L513 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:20,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:20,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:20,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:20,840 INFO L82 PathProgramCache]: Analyzing trace with hash 598153473, now seen corresponding path program 1 times [2021-08-29 11:01:20,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:20,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020250479] [2021-08-29 11:01:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:20,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:20,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020250479] [2021-08-29 11:01:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020250479] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:20,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497061868] [2021-08-29 11:01:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:20,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:20,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:20,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 11:01:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-29 11:01:20,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:20,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:21,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497061868] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:21,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:21,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-08-29 11:01:21,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020125940] [2021-08-29 11:01:21,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 11:01:21,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 11:01:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:01:21,043 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:21,071 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2021-08-29 11:01:21,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 11:01:21,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 11:01:21,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:21,073 INFO L225 Difference]: With dead ends: 32 [2021-08-29 11:01:21,073 INFO L226 Difference]: Without dead ends: 23 [2021-08-29 11:01:21,073 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 27.04ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:01:21,074 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.62ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:21,074 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 23.62ms Time] [2021-08-29 11:01:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-29 11:01:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-29 11:01:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-29 11:01:21,079 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2021-08-29 11:01:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:21,079 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-29 11:01:21,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-29 11:01:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 11:01:21,080 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:21,080 INFO L513 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:21,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:21,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-29 11:01:21,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:21,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1175196403, now seen corresponding path program 2 times [2021-08-29 11:01:21,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:21,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993923768] [2021-08-29 11:01:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:21,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:21,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:21,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993923768] [2021-08-29 11:01:21,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993923768] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:21,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934648134] [2021-08-29 11:01:21,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 11:01:21,361 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:21,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:21,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:21,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 11:01:21,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 11:01:21,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:21,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 11:01:21,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:21,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:21,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934648134] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:21,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:21,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-08-29 11:01:21,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504469439] [2021-08-29 11:01:21,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-29 11:01:21,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-29 11:01:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-29 11:01:21,539 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:21,581 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-08-29 11:01:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-29 11:01:21,582 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 11:01:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:21,583 INFO L225 Difference]: With dead ends: 48 [2021-08-29 11:01:21,583 INFO L226 Difference]: Without dead ends: 39 [2021-08-29 11:01:21,583 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 79.78ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-29 11:01:21,584 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.56ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:21,585 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 34.56ms Time] [2021-08-29 11:01:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-29 11:01:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-29 11:01:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-29 11:01:21,589 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2021-08-29 11:01:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:21,590 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-29 11:01:21,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-29 11:01:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-29 11:01:21,591 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:21,591 INFO L513 BasicCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:21,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:21,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:21,811 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash -713215707, now seen corresponding path program 3 times [2021-08-29 11:01:21,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:21,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114599314] [2021-08-29 11:01:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:21,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 45 proven. 210 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:01:22,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:22,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114599314] [2021-08-29 11:01:22,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114599314] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:22,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910377063] [2021-08-29 11:01:22,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 11:01:22,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:22,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:22,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:22,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 11:01:22,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-29 11:01:22,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:22,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 11:01:22,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-08-29 11:01:22,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-08-29 11:01:22,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910377063] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:22,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:22,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 23 [2021-08-29 11:01:22,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104863967] [2021-08-29 11:01:22,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-29 11:01:22,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-29 11:01:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-29 11:01:22,237 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:22,324 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-08-29 11:01:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-29 11:01:22,324 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-29 11:01:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:22,326 INFO L225 Difference]: With dead ends: 58 [2021-08-29 11:01:22,326 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 11:01:22,326 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 206.59ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-29 11:01:22,327 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.84ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:22,327 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 168 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [90 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 75.84ms Time] [2021-08-29 11:01:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 11:01:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 11:01:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:22,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2021-08-29 11:01:22,332 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 38 [2021-08-29 11:01:22,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:22,332 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2021-08-29 11:01:22,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:22,333 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2021-08-29 11:01:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-29 11:01:22,334 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:22,334 INFO L513 BasicCegarLoop]: trace histogram [21, 15, 6, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:22,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-29 11:01:22,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:22,550 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:22,550 INFO L82 PathProgramCache]: Analyzing trace with hash 160479836, now seen corresponding path program 4 times [2021-08-29 11:01:22,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:22,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979361742] [2021-08-29 11:01:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:22,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:22,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:22,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979361742] [2021-08-29 11:01:22,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979361742] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:22,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620607096] [2021-08-29 11:01:22,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-29 11:01:22,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:22,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:22,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:22,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 11:01:22,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-29 11:01:22,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:22,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 11:01:22,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:22,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 176 proven. 240 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:23,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620607096] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:23,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:23,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2021-08-29 11:01:23,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329632462] [2021-08-29 11:01:23,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-29 11:01:23,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-29 11:01:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-29 11:01:23,208 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:23,279 INFO L93 Difference]: Finished difference Result 100 states and 129 transitions. [2021-08-29 11:01:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-29 11:01:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-29 11:01:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:23,280 INFO L225 Difference]: With dead ends: 100 [2021-08-29 11:01:23,280 INFO L226 Difference]: Without dead ends: 83 [2021-08-29 11:01:23,281 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 362.79ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-29 11:01:23,281 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.29ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:23,281 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [22 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 59.29ms Time] [2021-08-29 11:01:23,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-29 11:01:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-08-29 11:01:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 82 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-08-29 11:01:23,287 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 48 [2021-08-29 11:01:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:23,287 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-08-29 11:01:23,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.1714285714285713) internal successors, (76), 35 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-08-29 11:01:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-29 11:01:23,288 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:23,289 INFO L513 BasicCegarLoop]: trace histogram [38, 32, 6, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:23,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:23,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:23,505 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 722625007, now seen corresponding path program 5 times [2021-08-29 11:01:23,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:23,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726540969] [2021-08-29 11:01:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:23,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:23,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:23,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726540969] [2021-08-29 11:01:23,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726540969] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:23,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223208916] [2021-08-29 11:01:23,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-29 11:01:23,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:23,957 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:23,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 11:01:24,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2021-08-29 11:01:24,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-29 11:01:24,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:24,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 363 proven. 1056 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 11:01:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223208916] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:24,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2021-08-29 11:01:24,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169629494] [2021-08-29 11:01:24,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-08-29 11:01:24,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-08-29 11:01:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-08-29 11:01:24,800 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:24,926 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2021-08-29 11:01:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-29 11:01:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-08-29 11:01:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:24,927 INFO L225 Difference]: With dead ends: 136 [2021-08-29 11:01:24,927 INFO L226 Difference]: Without dead ends: 119 [2021-08-29 11:01:24,928 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 821.64ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-08-29 11:01:24,929 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.51ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:24,929 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 145 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 103.51ms Time] [2021-08-29 11:01:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-29 11:01:24,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-08-29 11:01:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0593220338983051) internal successors, (125), 118 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2021-08-29 11:01:24,935 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 82 [2021-08-29 11:01:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:24,936 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2021-08-29 11:01:24,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2021-08-29 11:01:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-08-29 11:01:24,937 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:24,937 INFO L513 BasicCegarLoop]: trace histogram [56, 50, 6, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:24,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:25,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:25,154 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:25,154 INFO L82 PathProgramCache]: Analyzing trace with hash 186833573, now seen corresponding path program 6 times [2021-08-29 11:01:25,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:25,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969826798] [2021-08-29 11:01:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:25,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:26,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:26,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969826798] [2021-08-29 11:01:26,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969826798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:26,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705656010] [2021-08-29 11:01:26,276 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-29 11:01:26,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:26,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:26,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 11:01:26,332 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2021-08-29 11:01:26,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:26,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 11:01:26,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-08-29 11:01:26,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 650 proven. 36 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2021-08-29 11:01:26,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705656010] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:26,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:26,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 9, 9] total 66 [2021-08-29 11:01:26,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319948894] [2021-08-29 11:01:26,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-08-29 11:01:26,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-08-29 11:01:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-08-29 11:01:26,956 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:27,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:27,217 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2021-08-29 11:01:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-29 11:01:27,217 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-08-29 11:01:27,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:27,218 INFO L225 Difference]: With dead ends: 139 [2021-08-29 11:01:27,218 INFO L226 Difference]: Without dead ends: 135 [2021-08-29 11:01:27,219 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1298.94ms TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-08-29 11:01:27,220 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.89ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:27,220 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 487 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [330 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 203.89ms Time] [2021-08-29 11:01:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-29 11:01:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-08-29 11:01:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.1119402985074627) internal successors, (149), 134 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 149 transitions. [2021-08-29 11:01:27,227 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 149 transitions. Word has length 118 [2021-08-29 11:01:27,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:27,228 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 149 transitions. [2021-08-29 11:01:27,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 66 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 149 transitions. [2021-08-29 11:01:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-08-29 11:01:27,229 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:27,229 INFO L513 BasicCegarLoop]: trace histogram [64, 50, 14, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:27,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:27,445 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash -10833715, now seen corresponding path program 7 times [2021-08-29 11:01:27,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:27,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283426190] [2021-08-29 11:01:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:27,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:28,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:28,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283426190] [2021-08-29 11:01:28,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283426190] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:28,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198230230] [2021-08-29 11:01:28,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-29 11:01:28,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:28,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:28,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:28,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 11:01:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:28,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 66 conjunts are in the unsatisfiable core [2021-08-29 11:01:28,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:29,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:01:31,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198230230] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:31,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:31,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 103 [2021-08-29 11:01:31,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324823126] [2021-08-29 11:01:31,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-08-29 11:01:31,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-08-29 11:01:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-08-29 11:01:31,228 INFO L87 Difference]: Start difference. First operand 135 states and 149 transitions. Second operand has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:31,740 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2021-08-29 11:01:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-29 11:01:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-08-29 11:01:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:31,742 INFO L225 Difference]: With dead ends: 211 [2021-08-29 11:01:31,742 INFO L226 Difference]: Without dead ends: 207 [2021-08-29 11:01:31,743 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3045.11ms TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-08-29 11:01:31,744 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.52ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:31,744 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 782 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [545 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 290.52ms Time] [2021-08-29 11:01:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-08-29 11:01:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-08-29 11:01:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2021-08-29 11:01:31,751 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 134 [2021-08-29 11:01:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:31,752 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2021-08-29 11:01:31,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1650485436893203) internal successors, (223), 103 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2021-08-29 11:01:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-08-29 11:01:31,754 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:31,754 INFO L513 BasicCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:31,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:31,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-29 11:01:31,971 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:31,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1394062977, now seen corresponding path program 8 times [2021-08-29 11:01:31,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:31,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706821701] [2021-08-29 11:01:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:31,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-08-29 11:01:33,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:33,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706821701] [2021-08-29 11:01:33,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706821701] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:01:33,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678016463] [2021-08-29 11:01:33,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 11:01:33,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:01:33,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:01:33,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 11:01:33,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 11:01:33,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 11:01:33,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 105 conjunts are in the unsatisfiable core [2021-08-29 11:01:33,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:01:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-08-29 11:01:34,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:01:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-08-29 11:01:35,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678016463] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:01:35,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:01:35,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2021-08-29 11:01:35,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682953088] [2021-08-29 11:01:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-08-29 11:01:35,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-08-29 11:01:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2021-08-29 11:01:35,199 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:37,836 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2021-08-29 11:01:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-29 11:01:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-08-29 11:01:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:37,844 INFO L225 Difference]: With dead ends: 2862 [2021-08-29 11:01:37,845 INFO L226 Difference]: Without dead ends: 2858 [2021-08-29 11:01:37,846 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 406 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1211.29ms TimeCoverageRelationStatistics Valid=113, Invalid=2967, Unknown=0, NotChecked=0, Total=3080 [2021-08-29 11:01:37,847 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 5516 mSDsCounter, 0 mSdLazyCounter, 8433 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2074.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2505.91ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:37,847 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 8433 Unknown, 0 Unchecked, 18.26ms Time], IncrementalHoareTripleChecker [0 Valid, 8433 Invalid, 0 Unknown, 0 Unchecked, 2505.91ms Time] [2021-08-29 11:01:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-08-29 11:01:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 209. [2021-08-29 11:01:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2021-08-29 11:01:37,872 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 206 [2021-08-29 11:01:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:37,872 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2021-08-29 11:01:37,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:37,873 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2021-08-29 11:01:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-08-29 11:01:37,874 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:01:37,874 INFO L513 BasicCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1] [2021-08-29 11:01:37,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-29 11:01:38,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:01:38,090 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:01:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:01:38,091 INFO L82 PathProgramCache]: Analyzing trace with hash -283085658, now seen corresponding path program 9 times [2021-08-29 11:01:38,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:01:38,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515700164] [2021-08-29 11:01:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:01:38,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:01:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:01:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 7651 proven. 0 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-08-29 11:01:39,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:01:39,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515700164] [2021-08-29 11:01:39,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515700164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:01:39,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:01:39,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-08-29 11:01:39,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202254403] [2021-08-29 11:01:39,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-29 11:01:39,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:01:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-29 11:01:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-29 11:01:39,026 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:01:39,200 INFO L93 Difference]: Finished difference Result 308 states and 408 transitions. [2021-08-29 11:01:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-29 11:01:39,201 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-08-29 11:01:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:01:39,201 INFO L225 Difference]: With dead ends: 308 [2021-08-29 11:01:39,201 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:01:39,202 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 774.39ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-29 11:01:39,202 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.89ms IncrementalHoareTripleChecker+Time [2021-08-29 11:01:39,203 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 424 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 144.89ms Time] [2021-08-29 11:01:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:01:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:01:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:01:39,203 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2021-08-29 11:01:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:01:39,203 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:01:39,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:01:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:01:39,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:01:39,205 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:01:39,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 11:01:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:01:39,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:01:39,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:01:39,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:01:41,290 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:01:41,290 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 27 34) no Hoare annotation was computed. [2021-08-29 11:01:41,290 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-29 11:01:41,291 INFO L861 garLoopResultBuilder]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-08-29 11:01:41,291 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:01:41,291 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:01:41,291 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:01:41,291 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 33) no Hoare annotation was computed. [2021-08-29 11:01:41,291 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 27 34) the Hoare annotation is: (or (and (< ULTIMATE.start_main_~x~0 66) (<= ULTIMATE.start_main_~y~0 65) (<= 65 ULTIMATE.start_main_~y~0) (<= 65 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 55) (<= 55 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 55) (<= 55 ULTIMATE.start_main_~x~0)) (and (<= 58 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 58) (<= 58 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 58)) (and (<= 61 ULTIMATE.start_main_~x~0) (<= 61 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 61) (<= ULTIMATE.start_main_~y~0 61)) (and (<= ULTIMATE.start_main_~y~0 75) (<= 75 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 76) (<= 75 ULTIMATE.start_main_~y~0)) (and (<= 71 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 72) (<= ULTIMATE.start_main_~y~0 71) (<= 71 ULTIMATE.start_main_~y~0)) (and (<= 86 ULTIMATE.start_main_~y~0) (<= 86 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 87) (<= ULTIMATE.start_main_~y~0 86)) (and (<= 85 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 86) (<= ULTIMATE.start_main_~y~0 85) (<= 85 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 87) (< ULTIMATE.start_main_~x~0 88) (<= 87 ULTIMATE.start_main_~x~0) (<= 87 ULTIMATE.start_main_~y~0)) (and (<= 52 ULTIMATE.start_main_~y~0) (<= 52 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 52) (< ULTIMATE.start_main_~x~0 53)) (and (<= ULTIMATE.start_main_~y~0 62) (<= ULTIMATE.start_main_~x~0 62) (<= 62 ULTIMATE.start_main_~y~0) (<= 62 ULTIMATE.start_main_~x~0)) (and (<= 73 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 74) (<= 73 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 73)) (and (<= 56 ULTIMATE.start_main_~y~0) (<= 56 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 56) (<= ULTIMATE.start_main_~y~0 56)) (and (<= 66 ULTIMATE.start_main_~y~0) (<= 66 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 66) (< ULTIMATE.start_main_~x~0 67)) (and (<= 54 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 54) (<= 54 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 54)) (and (<= 77 ULTIMATE.start_main_~y~0) (<= 77 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 78) (<= ULTIMATE.start_main_~y~0 77)) (and (<= ULTIMATE.start_main_~y~0 82) (< ULTIMATE.start_main_~x~0 83) (<= 82 ULTIMATE.start_main_~x~0) (<= 82 ULTIMATE.start_main_~y~0)) (and (< ULTIMATE.start_main_~x~0 79) (<= 78 ULTIMATE.start_main_~y~0) (<= 78 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 78)) (and (< ULTIMATE.start_main_~x~0 97) (<= 96 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 96) (<= 96 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 70) (<= 70 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 71) (<= 70 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 98) (<= 98 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 99) (<= 98 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 53) (<= ULTIMATE.start_main_~x~0 53) (<= 53 ULTIMATE.start_main_~x~0) (<= 53 ULTIMATE.start_main_~y~0)) (and (<= 69 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 70) (<= 69 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 69)) (and (<= 50 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 51) (<= ULTIMATE.start_main_~y~0 50)) (and (<= ULTIMATE.start_main_~y~0 67) (< ULTIMATE.start_main_~x~0 68) (<= 67 ULTIMATE.start_main_~x~0) (<= 67 ULTIMATE.start_main_~y~0)) (and (<= 91 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 92) (<= 91 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 91)) (and (<= 57 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 57) (<= ULTIMATE.start_main_~y~0 57) (<= 57 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~y~0 88) (<= 88 ULTIMATE.start_main_~x~0) (<= 88 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 89)) (and (<= ULTIMATE.start_main_~y~0 90) (<= 90 ULTIMATE.start_main_~x~0) (<= 90 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 91)) (and (<= ULTIMATE.start_main_~y~0 72) (<= 72 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 73) (<= 72 ULTIMATE.start_main_~x~0)) (and (<= 76 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 77) (<= ULTIMATE.start_main_~y~0 76) (<= 76 ULTIMATE.start_main_~x~0)) (and (< ULTIMATE.start_main_~x~0 84) (<= 83 ULTIMATE.start_main_~y~0) (<= 83 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 83)) (and (<= ULTIMATE.start_main_~y~0 95) (<= 95 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 96) (<= 95 ULTIMATE.start_main_~y~0)) (and (<= 60 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 60) (<= ULTIMATE.start_main_~y~0 60) (<= 60 ULTIMATE.start_main_~x~0)) (and (< ULTIMATE.start_main_~x~0 85) (<= ULTIMATE.start_main_~y~0 84) (<= 84 ULTIMATE.start_main_~x~0) (<= 84 ULTIMATE.start_main_~y~0)) (and (<= 68 ULTIMATE.start_main_~y~0) (<= 68 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 68) (< ULTIMATE.start_main_~x~0 69)) (and (<= 100 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 100) (< 99 ULTIMATE.start_main_~y~0)) (and (<= 94 ULTIMATE.start_main_~y~0) (<= 94 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 95) (<= ULTIMATE.start_main_~y~0 94)) (and (<= 59 ULTIMATE.start_main_~y~0) (<= 59 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 59) (<= ULTIMATE.start_main_~x~0 59)) (and (< ULTIMATE.start_main_~x~0 94) (<= 93 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 93) (<= 93 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~x~0 63) (<= 63 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 63) (<= 63 ULTIMATE.start_main_~x~0)) (and (<= 97 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 98) (<= ULTIMATE.start_main_~y~0 97) (<= 97 ULTIMATE.start_main_~x~0)) (and (<= 74 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 74) (< ULTIMATE.start_main_~x~0 75) (<= 74 ULTIMATE.start_main_~x~0)) (and (< ULTIMATE.start_main_~x~0 82) (<= 81 ULTIMATE.start_main_~y~0) (<= 81 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 81)) (and (<= ULTIMATE.start_main_~y~0 80) (<= 80 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 81) (<= 80 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 64) (<= ULTIMATE.start_main_~x~0 64) (<= 64 ULTIMATE.start_main_~y~0) (<= 64 ULTIMATE.start_main_~x~0)) (and (<= 51 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~x~0 52) (<= 51 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 51)) (and (<= 99 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 99) (< ULTIMATE.start_main_~x~0 100) (<= 99 ULTIMATE.start_main_~y~0)) (and (<= 79 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 79) (<= 79 ULTIMATE.start_main_~x~0) (< ULTIMATE.start_main_~x~0 80)) (and (< ULTIMATE.start_main_~x~0 93) (<= ULTIMATE.start_main_~y~0 92) (<= 92 ULTIMATE.start_main_~y~0) (<= 92 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~y~0 89) (< ULTIMATE.start_main_~x~0 90) (<= 89 ULTIMATE.start_main_~x~0) (<= 89 ULTIMATE.start_main_~y~0))) [2021-08-29 11:01:41,292 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 11:01:41,292 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:01:41,292 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-08-29 11:01:41,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:01:41,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:01:41 BoogieIcfgContainer [2021-08-29 11:01:41,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:01:41,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:01:41,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:01:41,339 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:01:41,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:01:20" (3/4) ... [2021-08-29 11:01:41,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:01:41,347 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:01:41,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:01:41,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:01:41,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:01:41,375 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:01:41,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:01:41,376 INFO L158 Benchmark]: Toolchain (without parser) took 22057.96ms. Allocated memory was 62.9MB in the beginning and 195.0MB in the end (delta: 132.1MB). Free memory was 44.3MB in the beginning and 68.1MB in the end (delta: -23.8MB). Peak memory consumption was 106.5MB. Max. memory is 16.1GB. [2021-08-29 11:01:41,376 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:01:41,376 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.16ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 46.6MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 11:01:41,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.94ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 45.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:01:41,376 INFO L158 Benchmark]: Boogie Preprocessor took 15.25ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 44.2MB in the end (delta: 912.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:01:41,377 INFO L158 Benchmark]: RCFGBuilder took 156.28ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 36.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:01:41,377 INFO L158 Benchmark]: TraceAbstraction took 21325.66ms. Allocated memory was 62.9MB in the beginning and 195.0MB in the end (delta: 132.1MB). Free memory was 35.7MB in the beginning and 71.2MB in the end (delta: -35.5MB). Peak memory consumption was 112.7MB. Max. memory is 16.1GB. [2021-08-29 11:01:41,377 INFO L158 Benchmark]: Witness Printer took 36.71ms. Allocated memory is still 195.0MB. Free memory was 71.2MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:01:41,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 45.8MB in the beginning and 45.7MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.16ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 46.6MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.94ms. Allocated memory is still 62.9MB. Free memory was 46.4MB in the beginning and 45.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.25ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 44.2MB in the end (delta: 912.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 156.28ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 36.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 21325.66ms. Allocated memory was 62.9MB in the beginning and 195.0MB in the end (delta: 132.1MB). Free memory was 35.7MB in the beginning and 71.2MB in the end (delta: -35.5MB). Peak memory consumption was 112.7MB. Max. memory is 16.1GB. * Witness Printer took 36.71ms. Allocated memory is still 195.0MB. Free memory was 71.2MB in the beginning and 68.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21239.95ms, OverallIterations: 12, TraceHistogramMax: 101, EmptinessCheckTime: 16.76ms, AutomataDifference: 4158.40ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 2083.39ms, InitialAbstractionConstructionTime: 6.58ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 3541.42ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2911.15ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5638 mSDsCounter, 1018 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9709 IncrementalHoareTripleChecker+Invalid, 10727 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1018 mSolverCounterUnsat, 0 mSDtfsCounter, 9709 mSolverCounterSat, 28.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1648 GetRequests, 1238 SyntacticMatches, 8 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 7855.98ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=11, InterpolantAutomatonStates: 418, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 85.35ms AutomataMinimizationTime, 12 MinimizatonAttempts, 2649 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 660 HoareAnnotationTreeSize, 3 FomulaSimplifications, 14742 FormulaSimplificationTreeSizeReduction, 650.35ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 1231 FormulaSimplificationTreeSizeReductionInter, 1426.16ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 76.17ms SsaConstructionTime, 421.11ms SatisfiabilityAnalysisTime, 12100.74ms InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1478 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 2200 ConstructedInterpolants, 0 QuantifiedInterpolants, 7901 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1577 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 26464/68563 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((x < 66 && y <= 65) && 65 <= y) && 65 <= x) || (((y <= 55 && 55 <= y) && x <= 55) && 55 <= x)) || (((58 <= x && y <= 58) && 58 <= y) && x <= 58)) || (((61 <= x && 61 <= y) && x <= 61) && y <= 61)) || (((y <= 75 && 75 <= x) && x < 76) && 75 <= y)) || (((71 <= x && x < 72) && y <= 71) && 71 <= y)) || (((86 <= y && 86 <= x) && x < 87) && y <= 86)) || (((85 <= y && x < 86) && y <= 85) && 85 <= x)) || (((y <= 87 && x < 88) && 87 <= x) && 87 <= y)) || (((52 <= y && 52 <= x) && y <= 52) && x < 53)) || (((y <= 62 && x <= 62) && 62 <= y) && 62 <= x)) || (((73 <= x && x < 74) && 73 <= y) && y <= 73)) || (((56 <= y && 56 <= x) && x <= 56) && y <= 56)) || (((66 <= y && 66 <= x) && y <= 66) && x < 67)) || (((54 <= x && y <= 54) && 54 <= y) && x <= 54)) || (((77 <= y && 77 <= x) && x < 78) && y <= 77)) || (((y <= 82 && x < 83) && 82 <= x) && 82 <= y)) || (((x < 79 && 78 <= y) && 78 <= x) && y <= 78)) || (((x < 97 && 96 <= x) && y <= 96) && 96 <= y)) || (((y <= 70 && 70 <= x) && x < 71) && 70 <= y)) || (((y <= 98 && 98 <= y) && x < 99) && 98 <= x)) || (((y <= 53 && x <= 53) && 53 <= x) && 53 <= y)) || (((69 <= y && x < 70) && 69 <= x) && y <= 69)) || ((50 <= y && x < 51) && y <= 50)) || (((y <= 67 && x < 68) && 67 <= x) && 67 <= y)) || (((91 <= x && x < 92) && 91 <= y) && y <= 91)) || (((57 <= x && x <= 57) && y <= 57) && 57 <= y)) || (((y <= 88 && 88 <= x) && 88 <= y) && x < 89)) || (((y <= 90 && 90 <= x) && 90 <= y) && x < 91)) || (((y <= 72 && 72 <= y) && x < 73) && 72 <= x)) || (((76 <= y && x < 77) && y <= 76) && 76 <= x)) || (((x < 84 && 83 <= y) && 83 <= x) && y <= 83)) || (((y <= 95 && 95 <= x) && x < 96) && 95 <= y)) || (((60 <= y && x <= 60) && y <= 60) && 60 <= x)) || (((x < 85 && y <= 84) && 84 <= x) && 84 <= y)) || (((68 <= y && 68 <= x) && y <= 68) && x < 69)) || ((100 <= x && y <= 100) && 99 < y)) || (((94 <= y && 94 <= x) && x < 95) && y <= 94)) || (((59 <= y && 59 <= x) && y <= 59) && x <= 59)) || (((x < 94 && 93 <= y) && y <= 93) && 93 <= x)) || (((x <= 63 && 63 <= y) && y <= 63) && 63 <= x)) || (((97 <= y && x < 98) && y <= 97) && 97 <= x)) || (((74 <= y && y <= 74) && x < 75) && 74 <= x)) || (((x < 82 && 81 <= y) && 81 <= x) && y <= 81)) || (((y <= 80 && 80 <= y) && x < 81) && 80 <= x)) || (((y <= 64 && x <= 64) && 64 <= y) && 64 <= x)) || (((51 <= y && x < 52) && 51 <= x) && y <= 51)) || (((99 <= x && y <= 99) && x < 100) && 99 <= y)) || (((79 <= y && y <= 79) && 79 <= x) && x < 80)) || (((x < 93 && y <= 92) && 92 <= y) && 92 <= x)) || (((y <= 89 && x < 90) && 89 <= x) && 89 <= y) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:01:41,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...