./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer --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 b39a262e58c4b59fb1c3af72226955d8a31f5200 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:15:04,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:15:04,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:15:04,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:15:04,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:15:04,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:15:04,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:15:04,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:15:04,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:15:04,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:15:04,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:15:04,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:15:04,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:15:04,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:15:04,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:15:04,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:15:04,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:15:04,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:15:04,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:15:04,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:15:04,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:15:04,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:15:04,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:15:04,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:15:04,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:15:04,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:15:04,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:15:04,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:15:04,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:15:04,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:15:04,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:15:04,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:15:04,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:15:04,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:15:04,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:15:04,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:15:04,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:15:04,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:15:04,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:15:04,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:15:04,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:15:04,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:15:04,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:15:04,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:15:04,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:15:04,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:15:04,341 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:15:04,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:15:04,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:15:04,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:15:04,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:15:04,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:15:04,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:15:04,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:15:04,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:15:04,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:15:04,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:15:04,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:15:04,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:15:04,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:15:04,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:15:04,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:15:04,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:15:04,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:15:04,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:15:04,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:15:04,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:15:04,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:15:04,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:15:04,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:15:04,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:15:04,356 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:/tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b39a262e58c4b59fb1c3af72226955d8a31f5200 [2020-11-29 18:15:04,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:15:04,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:15:04,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:15:04,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:15:04,722 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:15:04,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2020-11-29 18:15:04,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/data/f5cbce941/d1b15481bf8f4653b981a9a0a3f60c7d/FLAG96f230f56 [2020-11-29 18:15:05,369 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:15:05,370 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2020-11-29 18:15:05,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/data/f5cbce941/d1b15481bf8f4653b981a9a0a3f60c7d/FLAG96f230f56 [2020-11-29 18:15:05,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/data/f5cbce941/d1b15481bf8f4653b981a9a0a3f60c7d [2020-11-29 18:15:05,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:15:05,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:15:05,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:05,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:15:05,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:15:05,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:05" (1/1) ... [2020-11-29 18:15:05,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290e879f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:05, skipping insertion in model container [2020-11-29 18:15:05,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:15:05" (1/1) ... [2020-11-29 18:15:05,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:15:05,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:15:06,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:06,156 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:15:06,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:15:06,314 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:15:06,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06 WrapperNode [2020-11-29 18:15:06,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:15:06,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:06,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:15:06,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:15:06,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:15:06,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:15:06,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:15:06,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:15:06,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... [2020-11-29 18:15:06,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:15:06,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:15:06,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:15:06,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:15:06,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:15:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:15:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:15:06,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 18:15:06,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 18:15:06,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:15:06,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 18:15:06,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:15:06,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:15:06,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:15:06,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:15:07,122 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:15:07,123 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-11-29 18:15:07,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:07 BoogieIcfgContainer [2020-11-29 18:15:07,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:15:07,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:15:07,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:15:07,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:15:07,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:15:05" (1/3) ... [2020-11-29 18:15:07,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e730ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:07, skipping insertion in model container [2020-11-29 18:15:07,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:15:06" (2/3) ... [2020-11-29 18:15:07,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e730ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:15:07, skipping insertion in model container [2020-11-29 18:15:07,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:07" (3/3) ... [2020-11-29 18:15:07,135 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-11-29 18:15:07,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:15:07,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 18:15:07,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 18:15:07,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:15:07,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:15:07,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:15:07,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:15:07,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:15:07,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:15:07,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:15:07,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:15:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 18:15:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 18:15:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:07,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:07,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1819222424, now seen corresponding path program 1 times [2020-11-29 18:15:07,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:07,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884474332] [2020-11-29 18:15:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:07,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884474332] [2020-11-29 18:15:07,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:07,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:15:07,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050808830] [2020-11-29 18:15:07,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:15:07,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:15:07,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:15:07,435 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 18:15:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:07,456 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-11-29 18:15:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:15:07,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 18:15:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:07,467 INFO L225 Difference]: With dead ends: 73 [2020-11-29 18:15:07,467 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 18:15:07,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:15:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 18:15:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 18:15:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:15:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-29 18:15:07,511 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2020-11-29 18:15:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:07,511 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-29 18:15:07,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:15:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-29 18:15:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:15:07,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:07,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:07,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:15:07,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash 177875533, now seen corresponding path program 1 times [2020-11-29 18:15:07,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:07,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961617731] [2020-11-29 18:15:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:07,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961617731] [2020-11-29 18:15:07,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:07,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:15:07,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637946318] [2020-11-29 18:15:07,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:15:07,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:07,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:15:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:15:07,636 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 4 states. [2020-11-29 18:15:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:07,736 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-11-29 18:15:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:15:07,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 18:15:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:07,738 INFO L225 Difference]: With dead ends: 37 [2020-11-29 18:15:07,739 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 18:15:07,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:15:07,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 18:15:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-11-29 18:15:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 18:15:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-11-29 18:15:07,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 8 [2020-11-29 18:15:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:07,747 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-11-29 18:15:07,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:15:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-11-29 18:15:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:15:07,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:07,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:15:07,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:07,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:07,751 INFO L82 PathProgramCache]: Analyzing trace with hash -574954344, now seen corresponding path program 1 times [2020-11-29 18:15:07,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:07,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553691108] [2020-11-29 18:15:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:07,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553691108] [2020-11-29 18:15:07,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:07,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:15:07,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621935625] [2020-11-29 18:15:07,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:15:07,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:15:07,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:15:07,926 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-11-29 18:15:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:08,084 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-11-29 18:15:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:15:08,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 18:15:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:08,086 INFO L225 Difference]: With dead ends: 56 [2020-11-29 18:15:08,087 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 18:15:08,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:15:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 18:15:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2020-11-29 18:15:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 18:15:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 18:15:08,095 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 11 [2020-11-29 18:15:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:08,095 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 18:15:08,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:15:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 18:15:08,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:15:08,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:08,096 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:08,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:15:08,097 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1915994638, now seen corresponding path program 1 times [2020-11-29 18:15:08,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:08,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998647822] [2020-11-29 18:15:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:08,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998647822] [2020-11-29 18:15:08,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912144551] [2020-11-29 18:15:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:08,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 18:15:08,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:08,658 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 18:15:08,659 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 18:15:08,660 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,674 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:08,683 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-29 18:15:08,684 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:08,712 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:08,713 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-11-29 18:15:08,837 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:08,838 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-11-29 18:15:08,839 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,891 INFO L625 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-11-29 18:15:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:08,904 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-11-29 18:15:08,905 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:08,929 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-11-29 18:15:08,929 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:08,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:08,951 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-11-29 18:15:09,144 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,145 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-11-29 18:15:09,146 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:09,187 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,192 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_28|, |v_#memory_int_29|], 4=[|v_#memory_int_31|]} [2020-11-29 18:15:09,198 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:09,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,252 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:09,276 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:09,312 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-11-29 18:15:09,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-11-29 18:15:09,313 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:09,334 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,356 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:09,359 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-11-29 18:15:09,649 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2020-11-29 18:15:09,652 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:09,662 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:09,665 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:09,665 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-11-29 18:15:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:09,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:09,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-29 18:15:09,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861437224] [2020-11-29 18:15:09,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 18:15:09,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:09,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 18:15:09,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 18:15:09,683 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 11 states. [2020-11-29 18:15:16,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:16,451 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-11-29 18:15:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 18:15:16,452 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-29 18:15:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:16,453 INFO L225 Difference]: With dead ends: 63 [2020-11-29 18:15:16,454 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 18:15:16,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-11-29 18:15:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 18:15:16,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 25. [2020-11-29 18:15:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 18:15:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-29 18:15:16,460 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2020-11-29 18:15:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:16,460 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-29 18:15:16,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 18:15:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-29 18:15:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:15:16,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:16,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:16,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:16,662 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:16,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1581964501, now seen corresponding path program 1 times [2020-11-29 18:15:16,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:16,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799699935] [2020-11-29 18:15:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:16,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799699935] [2020-11-29 18:15:16,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:15:16,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:15:16,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805401539] [2020-11-29 18:15:16,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:15:16,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:15:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:15:16,765 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-11-29 18:15:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:16,896 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-29 18:15:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:15:16,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 18:15:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:16,900 INFO L225 Difference]: With dead ends: 42 [2020-11-29 18:15:16,900 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 18:15:16,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:15:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 18:15:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-11-29 18:15:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 18:15:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-29 18:15:16,906 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2020-11-29 18:15:16,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:16,906 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-29 18:15:16,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:15:16,906 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-29 18:15:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:15:16,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:16,907 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:16,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:15:16,907 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash -105137561, now seen corresponding path program 1 times [2020-11-29 18:15:16,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:16,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571253933] [2020-11-29 18:15:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:16,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571253933] [2020-11-29 18:15:16,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676553931] [2020-11-29 18:15:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:17,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 18:15:17,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:17,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:17,143 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-11-29 18:15:17,144 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-11-29 18:15:17,144 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,215 INFO L625 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-11-29 18:15:17,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:17,285 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-11-29 18:15:17,286 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 48 [2020-11-29 18:15:17,286 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,363 INFO L625 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-11-29 18:15:17,363 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,363 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-11-29 18:15:17,462 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 18:15:17,465 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-11-29 18:15:17,489 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-29 18:15:17,489 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,533 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:17,534 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-11-29 18:15:17,534 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,541 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 18:15:17,542 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,596 INFO L625 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-11-29 18:15:17,603 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 18:15:17,603 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,607 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-29 18:15:17,608 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,623 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:17,623 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-11-29 18:15:17,624 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,643 INFO L625 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-11-29 18:15:17,644 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:17,644 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-11-29 18:15:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:17,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:17,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-11-29 18:15:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967314494] [2020-11-29 18:15:17,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 18:15:17,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 18:15:17,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:15:17,664 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 8 states. [2020-11-29 18:15:17,847 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-29 18:15:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:18,093 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-11-29 18:15:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:15:18,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-11-29 18:15:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:18,094 INFO L225 Difference]: With dead ends: 53 [2020-11-29 18:15:18,094 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 18:15:18,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-29 18:15:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 18:15:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 18:15:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:15:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-29 18:15:18,101 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-11-29 18:15:18,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:18,101 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-29 18:15:18,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 18:15:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-29 18:15:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 18:15:18,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:18,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:18,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:18,314 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 307103693, now seen corresponding path program 1 times [2020-11-29 18:15:18,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:18,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227640251] [2020-11-29 18:15:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:18,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227640251] [2020-11-29 18:15:18,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627976620] [2020-11-29 18:15:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 50 conjunts are in the unsatisfiable core [2020-11-29 18:15:18,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:18,815 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 18:15:18,815 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 18:15:18,815 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:18,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:18,825 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:18,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:23 [2020-11-29 18:15:18,951 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-11-29 18:15:18,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-11-29 18:15:18,953 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,026 INFO L625 ElimStorePlain]: treesize reduction 28, result has 75.7 percent of original size [2020-11-29 18:15:19,038 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-29 18:15:19,038 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,065 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-29 18:15:19,065 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,108 INFO L625 ElimStorePlain]: treesize reduction 4, result has 93.4 percent of original size [2020-11-29 18:15:19,108 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,108 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:85, output treesize:57 [2020-11-29 18:15:19,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:19,285 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,286 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-11-29 18:15:19,287 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,381 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:19,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:19,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:19,456 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 43 [2020-11-29 18:15:19,457 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,506 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,510 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:19,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:19,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 18:15:19,747 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-11-29 18:15:19,747 INFO L350 Elim1Store]: treesize reduction 66, result has 62.9 percent of original size [2020-11-29 18:15:19,748 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 110 treesize of output 147 [2020-11-29 18:15:19,752 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-11-29 18:15:19,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-11-29 18:15:19,756 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:19,828 INFO L625 ElimStorePlain]: treesize reduction 130, result has 41.7 percent of original size [2020-11-29 18:15:19,862 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:19,863 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:235, output treesize:89 [2020-11-29 18:15:20,027 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-11-29 18:15:20,028 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:20,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:20,043 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:20,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:100, output treesize:74 [2020-11-29 18:15:20,760 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:20,761 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2020-11-29 18:15:20,763 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-11-29 18:15:20,763 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-29 18:15:20,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 18:15:20,767 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:20,784 INFO L625 ElimStorePlain]: treesize reduction 36, result has 20.0 percent of original size [2020-11-29 18:15:20,788 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:20,788 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:75, output treesize:4 [2020-11-29 18:15:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:20,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:20,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-11-29 18:15:20,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61292084] [2020-11-29 18:15:20,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 18:15:20,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:20,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 18:15:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2020-11-29 18:15:20,800 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 14 states. [2020-11-29 18:15:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:21,509 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-11-29 18:15:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 18:15:21,510 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-11-29 18:15:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:21,511 INFO L225 Difference]: With dead ends: 87 [2020-11-29 18:15:21,511 INFO L226 Difference]: Without dead ends: 84 [2020-11-29 18:15:21,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=275, Unknown=1, NotChecked=0, Total=342 [2020-11-29 18:15:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-29 18:15:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2020-11-29 18:15:21,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 18:15:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-11-29 18:15:21,520 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 21 [2020-11-29 18:15:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:21,521 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-11-29 18:15:21,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 18:15:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-11-29 18:15:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 18:15:21,522 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:21,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:21,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:21,746 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1895451595, now seen corresponding path program 1 times [2020-11-29 18:15:21,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:21,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644569603] [2020-11-29 18:15:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:22,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644569603] [2020-11-29 18:15:22,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535915776] [2020-11-29 18:15:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:15:22,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 18:15:22,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:15:22,167 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-29 18:15:22,167 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-11-29 18:15:22,167 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,180 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-29 18:15:22,181 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:17 [2020-11-29 18:15:22,244 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,245 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-11-29 18:15:22,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 18:15:22,247 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-29 18:15:22,262 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,284 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-11-29 18:15:22,285 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,294 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,296 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,296 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:65, output treesize:19 [2020-11-29 18:15:22,344 INFO L441 ElimStorePlain]: Different costs {0=[|v_#memory_int_32|], 2=[|v_#memory_$Pointer$.base_27|, |v_#memory_$Pointer$.offset_27|]} [2020-11-29 18:15:22,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2020-11-29 18:15:22,349 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,399 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,400 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 124 [2020-11-29 18:15:22,401 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-11-29 18:15:22,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 18:15:22,402 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,424 INFO L625 ElimStorePlain]: treesize reduction 40, result has 61.9 percent of original size [2020-11-29 18:15:22,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 47 [2020-11-29 18:15:22,430 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,436 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,436 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,437 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:112, output treesize:26 [2020-11-29 18:15:22,503 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2020-11-29 18:15:22,504 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,515 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2020-11-29 18:15:22,516 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,523 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,523 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:9 [2020-11-29 18:15:22,552 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-29 18:15:22,552 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 18:15:22,558 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 18:15:22,558 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-29 18:15:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:15:22,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 18:15:22,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2020-11-29 18:15:22,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860181863] [2020-11-29 18:15:22,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 18:15:22,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:15:22,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 18:15:22,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-11-29 18:15:22,595 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 18 states. [2020-11-29 18:15:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:15:23,497 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2020-11-29 18:15:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 18:15:23,497 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2020-11-29 18:15:23,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:15:23,499 INFO L225 Difference]: With dead ends: 89 [2020-11-29 18:15:23,499 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 18:15:23,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-11-29 18:15:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 18:15:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-11-29 18:15:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 18:15:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-11-29 18:15:23,510 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 21 [2020-11-29 18:15:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:15:23,511 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-11-29 18:15:23,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 18:15:23,511 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-11-29 18:15:23,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 18:15:23,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:15:23,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:15:23,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 18:15:23,718 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:15:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:15:23,719 INFO L82 PathProgramCache]: Analyzing trace with hash 970523573, now seen corresponding path program 1 times [2020-11-29 18:15:23,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:15:23,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913479741] [2020-11-29 18:15:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:15:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:23,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:15:23,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:15:23,841 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:15:23,841 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:15:23,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 18:15:23,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:15:23 BoogieIcfgContainer [2020-11-29 18:15:23,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:15:23,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:15:23,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:15:23,878 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:15:23,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:15:07" (3/4) ... [2020-11-29 18:15:23,880 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:15:23,930 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1260ff86-928f-4e03-8682-4429010673eb/bin/uautomizer/witness.graphml [2020-11-29 18:15:23,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:15:23,931 INFO L168 Benchmark]: Toolchain (without parser) took 18253.01 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 107.2 MB in the beginning and 102.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 66.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,931 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:15:23,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.17 ms. Allocated memory is still 136.3 MB. Free memory was 106.7 MB in the beginning and 100.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 98.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,933 INFO L168 Benchmark]: Boogie Preprocessor took 55.68 ms. Allocated memory is still 136.3 MB. Free memory was 98.7 MB in the beginning and 97.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:15:23,933 INFO L168 Benchmark]: RCFGBuilder took 683.06 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 72.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,933 INFO L168 Benchmark]: TraceAbstraction took 16750.03 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 72.1 MB in the beginning and 105.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,934 INFO L168 Benchmark]: Witness Printer took 52.66 ms. Allocated memory is still 197.1 MB. Free memory was 105.4 MB in the beginning and 102.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:15:23,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.17 ms. Allocated memory is still 136.3 MB. Free memory was 106.7 MB in the beginning and 100.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.88 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 98.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.68 ms. Allocated memory is still 136.3 MB. Free memory was 98.7 MB in the beginning and 97.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 683.06 ms. Allocated memory is still 136.3 MB. Free memory was 97.3 MB in the beginning and 72.3 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16750.03 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 72.1 MB in the beginning and 105.4 MB in the end (delta: -33.3 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. * Witness Printer took 52.66 ms. Allocated memory is still 197.1 MB. Free memory was 105.4 MB in the beginning and 102.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 993]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1005] SLL* null = malloc(sizeof(SLL)); [L1006] null->colour = BLACK [L1007] null->next = ((void*)0) [L1009] SLL* list = malloc(sizeof(SLL)); [L1010] list->next = null [L1011] list->colour = BLACK [L1013] SLL* end = list; [L1016] COND TRUE __VERIFIER_nondet_int() [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1029] end->colour = RED [L1030] end->next = malloc(sizeof(SLL)) [L1031] EXPR end->next [L1031] end = end->next [L1032] end->next = null [L1033] end->colour = BLACK [L1016] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list [L1041] COND FALSE !(!(null != end)) [L1042] EXPR end->colour [L1042] COND FALSE !(!(BLACK == end->colour)) [L1044] COND TRUE null != end [L1046] EXPR end->colour [L1046] COND FALSE !(RED == end->colour) [L1053] EXPR end->next [L1053] end = end->next [L1044] COND TRUE null != end [L1046] EXPR end->colour [L1046] COND TRUE RED == end->colour [L1048] EXPR end->next [L1048] end = end->next [L1049] COND FALSE !(!(null != end)) [L1050] EXPR end->colour [L1050] COND TRUE !(BLACK != end->colour) [L993] COND FALSE !(0) [L993] __assert_fail ("0", "sll-rb-sentinel-2.c", 13, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.6s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 226 SDtfs, 345 SDslu, 820 SDs, 0 SdLazy, 797 SolverSat, 121 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 120 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 177 ConstructedInterpolants, 19 QuantifiedInterpolants, 70518 SizeOfPredicates, 51 NumberOfNonLiveVariables, 470 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 2/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...