./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.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_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/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 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:01:45,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:01:45,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:01:45,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:01:45,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:01:45,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:01:45,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:01:45,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:01:45,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:01:45,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:01:45,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:01:45,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:01:45,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:01:45,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:01:45,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:01:45,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:01:45,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:01:45,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:01:45,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:01:45,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:01:45,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:01:45,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:01:45,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:01:45,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:01:45,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:01:45,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:01:45,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:01:45,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:01:45,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:01:45,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:01:45,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:01:45,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:01:45,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:01:45,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:01:45,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:01:45,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:01:45,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:01:45,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:01:45,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:01:45,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:01:45,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:01:45,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:01:45,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:01:45,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:01:45,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:01:45,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:01:45,483 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:01:45,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:01:45,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:01:45,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:01:45,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:01:45,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:01:45,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:01:45,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:01:45,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:01:45,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:01:45,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:01:45,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:01:45,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:01:45,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:01:45,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:01:45,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:01:45,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:01:45,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:01:45,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:01:45,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:01:45,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:01:45,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:01:45,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:01:45,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:01:45,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:01:45,492 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_f3a6e6e6-4c17-4ec1-9e82-30721c540412/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2af97cd1d0200c0dff6df008e1ae10eecdfc76e4 [2020-11-29 20:01:45,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:01:45,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:01:45,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:01:45,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:01:45,850 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:01:45,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2020-11-29 20:01:45,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/data/449faafbe/58b3b2cbd33a49b68f1464b2ba03cccd/FLAG31e91c329 [2020-11-29 20:01:46,601 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:01:46,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2020-11-29 20:01:46,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/data/449faafbe/58b3b2cbd33a49b68f1464b2ba03cccd/FLAG31e91c329 [2020-11-29 20:01:46,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/data/449faafbe/58b3b2cbd33a49b68f1464b2ba03cccd [2020-11-29 20:01:46,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:01:46,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:01:46,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:01:46,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:01:46,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:01:46,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:01:46" (1/1) ... [2020-11-29 20:01:46,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f7a554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:46, skipping insertion in model container [2020-11-29 20:01:46,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:01:46" (1/1) ... [2020-11-29 20:01:46,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:01:47,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:01:47,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:01:47,513 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:01:47,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:01:47,660 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:01:47,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47 WrapperNode [2020-11-29 20:01:47,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:01:47,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:01:47,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:01:47,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:01:47,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:01:47,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:01:47,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:01:47,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:01:47,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... [2020-11-29 20:01:47,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:01:47,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:01:47,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:01:47,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:01:47,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/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 20:01:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:01:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-29 20:01:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:01:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:01:47,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:01:48,567 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:01:48,567 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-11-29 20:01:48,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:01:48 BoogieIcfgContainer [2020-11-29 20:01:48,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:01:48,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:01:48,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:01:48,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:01:48,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:01:46" (1/3) ... [2020-11-29 20:01:48,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492fbef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:01:48, skipping insertion in model container [2020-11-29 20:01:48,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:01:47" (2/3) ... [2020-11-29 20:01:48,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492fbef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:01:48, skipping insertion in model container [2020-11-29 20:01:48,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:01:48" (3/3) ... [2020-11-29 20:01:48,586 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-11-29 20:01:48,598 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:01:48,603 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:01:48,618 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:01:48,650 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:01:48,650 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:01:48,650 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:01:48,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:01:48,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:01:48,651 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:01:48,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:01:48,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:01:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-11-29 20:01:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:01:48,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:48,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:01:48,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-29 20:01:48,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:48,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838529961] [2020-11-29 20:01:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:48,908 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 20:01:48,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838529961] [2020-11-29 20:01:48,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:48,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:01:48,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586775467] [2020-11-29 20:01:48,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:01:48,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:48,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:01:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:01:48,937 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-11-29 20:01:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:48,983 INFO L93 Difference]: Finished difference Result 91 states and 116 transitions. [2020-11-29 20:01:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:01:48,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 20:01:48,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:49,001 INFO L225 Difference]: With dead ends: 91 [2020-11-29 20:01:49,004 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 20:01:49,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:01:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 20:01:49,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 20:01:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:01:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-29 20:01:49,066 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 4 [2020-11-29 20:01:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:49,067 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-29 20:01:49,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:01:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-29 20:01:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:01:49,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:49,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:49,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:01:49,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:49,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:49,074 INFO L82 PathProgramCache]: Analyzing trace with hash -19018950, now seen corresponding path program 1 times [2020-11-29 20:01:49,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:49,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575542908] [2020-11-29 20:01:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:49,313 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 20:01:49,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575542908] [2020-11-29 20:01:49,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:49,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:01:49,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980357825] [2020-11-29 20:01:49,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:01:49,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:49,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:01:49,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:01:49,320 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-11-29 20:01:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:49,475 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2020-11-29 20:01:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:01:49,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 20:01:49,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:49,478 INFO L225 Difference]: With dead ends: 64 [2020-11-29 20:01:49,478 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 20:01:49,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:01:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 20:01:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-11-29 20:01:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:01:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-29 20:01:49,488 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2020-11-29 20:01:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:49,488 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-29 20:01:49,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:01:49,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-29 20:01:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:01:49,489 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:49,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:49,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:01:49,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 38239352, now seen corresponding path program 1 times [2020-11-29 20:01:49,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:49,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177466059] [2020-11-29 20:01:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:49,637 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 20:01:49,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177466059] [2020-11-29 20:01:49,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:49,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:01:49,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130007829] [2020-11-29 20:01:49,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:01:49,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:49,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:01:49,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:01:49,641 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-11-29 20:01:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:49,728 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-11-29 20:01:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:01:49,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 20:01:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:49,730 INFO L225 Difference]: With dead ends: 67 [2020-11-29 20:01:49,731 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 20:01:49,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:01:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 20:01:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 20:01:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:01:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-29 20:01:49,738 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 15 [2020-11-29 20:01:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:49,738 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-29 20:01:49,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:01:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-29 20:01:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 20:01:49,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:49,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:49,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:01:49,746 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:49,748 INFO L82 PathProgramCache]: Analyzing trace with hash 739303930, now seen corresponding path program 1 times [2020-11-29 20:01:49,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:49,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696062600] [2020-11-29 20:01:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:50,117 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 20:01:50,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696062600] [2020-11-29 20:01:50,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:50,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:01:50,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589486872] [2020-11-29 20:01:50,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:01:50,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:50,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:01:50,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:01:50,121 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 9 states. [2020-11-29 20:01:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:50,602 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-11-29 20:01:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:01:50,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-11-29 20:01:50,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:50,608 INFO L225 Difference]: With dead ends: 54 [2020-11-29 20:01:50,608 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:01:50,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:01:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:01:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-29 20:01:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 20:01:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-29 20:01:50,618 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 15 [2020-11-29 20:01:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:50,618 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-29 20:01:50,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:01:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-29 20:01:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:01:50,619 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:50,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:50,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:01:50,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash 293914920, now seen corresponding path program 1 times [2020-11-29 20:01:50,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:50,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957564041] [2020-11-29 20:01:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:51,079 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 20:01:51,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957564041] [2020-11-29 20:01:51,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:51,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 20:01:51,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768469391] [2020-11-29 20:01:51,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:01:51,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:51,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:01:51,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:01:51,083 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 12 states. [2020-11-29 20:01:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:51,691 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-29 20:01:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:01:51,692 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-11-29 20:01:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:51,693 INFO L225 Difference]: With dead ends: 54 [2020-11-29 20:01:51,693 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:01:51,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:01:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:01:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-29 20:01:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 20:01:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 20:01:51,701 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19 [2020-11-29 20:01:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:51,701 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 20:01:51,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:01:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 20:01:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:01:51,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:51,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:51,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:01:51,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:51,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:51,704 INFO L82 PathProgramCache]: Analyzing trace with hash 293974502, now seen corresponding path program 1 times [2020-11-29 20:01:51,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:51,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098463323] [2020-11-29 20:01:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:51,796 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 20:01:51,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098463323] [2020-11-29 20:01:51,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:51,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:01:51,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431333718] [2020-11-29 20:01:51,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:01:51,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:51,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:01:51,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:01:51,799 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 20:01:52,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:52,018 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-29 20:01:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:01:52,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 20:01:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:52,020 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:01:52,020 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:01:52,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:01:52,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:01:52,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2020-11-29 20:01:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:01:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-29 20:01:52,027 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2020-11-29 20:01:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:52,027 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-29 20:01:52,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:01:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-29 20:01:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:01:52,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:52,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:52,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:01:52,030 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -356272966, now seen corresponding path program 1 times [2020-11-29 20:01:52,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:52,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451687326] [2020-11-29 20:01:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:52,313 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 20:01:52,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451687326] [2020-11-29 20:01:52,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:52,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 20:01:52,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702193746] [2020-11-29 20:01:52,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:01:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:52,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:01:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:01:52,317 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 13 states. [2020-11-29 20:01:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:52,676 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 20:01:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:01:52,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2020-11-29 20:01:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:52,678 INFO L225 Difference]: With dead ends: 50 [2020-11-29 20:01:52,679 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 20:01:52,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:01:52,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 20:01:52,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-11-29 20:01:52,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 20:01:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-29 20:01:52,684 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 25 [2020-11-29 20:01:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:52,685 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-29 20:01:52,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:01:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-29 20:01:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:01:52,686 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:52,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:52,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:01:52,687 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:52,687 INFO L82 PathProgramCache]: Analyzing trace with hash -356213384, now seen corresponding path program 1 times [2020-11-29 20:01:52,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:52,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210794291] [2020-11-29 20:01:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:52,933 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 20:01:52,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210794291] [2020-11-29 20:01:52,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:52,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 20:01:52,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386086765] [2020-11-29 20:01:52,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:01:52,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:01:52,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:01:52,951 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 12 states. [2020-11-29 20:01:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:53,356 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-29 20:01:53,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:01:53,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-11-29 20:01:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:53,358 INFO L225 Difference]: With dead ends: 48 [2020-11-29 20:01:53,358 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:01:53,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:01:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:01:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 20:01:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:01:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-29 20:01:53,364 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2020-11-29 20:01:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:53,365 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-29 20:01:53,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:01:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-29 20:01:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:01:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:53,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:53,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 20:01:53,367 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash -298955082, now seen corresponding path program 1 times [2020-11-29 20:01:53,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:53,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95575417] [2020-11-29 20:01:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:53,660 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 20:01:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95575417] [2020-11-29 20:01:53,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:53,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:01:53,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741526073] [2020-11-29 20:01:53,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:01:53,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:53,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:01:53,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:01:53,664 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 9 states. [2020-11-29 20:01:53,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:53,986 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-11-29 20:01:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:01:53,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-29 20:01:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:53,987 INFO L225 Difference]: With dead ends: 48 [2020-11-29 20:01:53,987 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 20:01:53,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:01:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 20:01:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-11-29 20:01:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:01:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 20:01:53,993 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 25 [2020-11-29 20:01:53,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:53,993 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 20:01:53,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:01:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 20:01:53,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:01:53,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:53,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:53,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:01:53,995 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:53,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:53,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1054394266, now seen corresponding path program 1 times [2020-11-29 20:01:53,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:53,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093800926] [2020-11-29 20:01:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:01:54,097 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 20:01:54,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093800926] [2020-11-29 20:01:54,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:01:54,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:01:54,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519397261] [2020-11-29 20:01:54,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:01:54,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:01:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:01:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:01:54,100 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2020-11-29 20:01:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:01:54,194 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-11-29 20:01:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:01:54,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-29 20:01:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:01:54,199 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:01:54,199 INFO L226 Difference]: Without dead ends: 34 [2020-11-29 20:01:54,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:01:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-29 20:01:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-11-29 20:01:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:01:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-29 20:01:54,206 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 29 [2020-11-29 20:01:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:01:54,206 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-29 20:01:54,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:01:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-29 20:01:54,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 20:01:54,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:01:54,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:01:54,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:01:54,208 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:01:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:01:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1863740892, now seen corresponding path program 1 times [2020-11-29 20:01:54,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:01:54,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147521321] [2020-11-29 20:01:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:01:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:01:54,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:01:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:01:54,340 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:01:54,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:01:54,384 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:01:54,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:01:54,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:01:54 BoogieIcfgContainer [2020-11-29 20:01:54,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:01:54,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:01:54,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:01:54,489 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:01:54,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:01:48" (3/4) ... [2020-11-29 20:01:54,492 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:01:54,563 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f3a6e6e6-4c17-4ec1-9e82-30721c540412/bin/uautomizer/witness.graphml [2020-11-29 20:01:54,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:01:54,566 INFO L168 Benchmark]: Toolchain (without parser) took 7671.18 ms. Allocated memory was 88.1 MB in the beginning and 142.6 MB in the end (delta: 54.5 MB). Free memory was 57.3 MB in the beginning and 108.8 MB in the end (delta: -51.6 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,567 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:01:54,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.11 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 53.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.77 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,569 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 88.1 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:01:54,570 INFO L168 Benchmark]: RCFGBuilder took 813.64 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.8 MB in the beginning and 91.6 MB in the end (delta: -41.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,570 INFO L168 Benchmark]: TraceAbstraction took 5917.09 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 91.0 MB in the beginning and 113.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,571 INFO L168 Benchmark]: Witness Printer took 74.52 ms. Allocated memory is still 142.6 MB. Free memory was 113.0 MB in the beginning and 108.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:01:54,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 44.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 746.11 ms. Allocated memory is still 88.1 MB. Free memory was 57.1 MB in the beginning and 53.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.77 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 88.1 MB. Free memory was 51.5 MB in the beginning and 50.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 813.64 ms. Allocated memory was 88.1 MB in the beginning and 117.4 MB in the end (delta: 29.4 MB). Free memory was 49.8 MB in the beginning and 91.6 MB in the end (delta: -41.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5917.09 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 91.0 MB in the beginning and 113.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. * Witness Printer took 74.52 ms. Allocated memory is still 142.6 MB. Free memory was 113.0 MB in the beginning and 108.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L519] void * guard_malloc_counter = 0; [L534] struct list_head *elem = ((void *)0); [L544] static struct list_head head; VAL [elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L546] struct list_head *dev1, *dev2; [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L529] return __getMemory(size); [L547] dev1 = my_malloc(sizeof(*dev1)) [L522] (size > 0) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L523] guard_malloc_counter++ [L524] COND FALSE !(!__VERIFIER_nondet_int()) [L526] return (void *) guard_malloc_counter; VAL [elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L529] return __getMemory(size); [L548] dev2 = my_malloc(sizeof(*dev2)) [L549] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] elem = new VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L541] COND FALSE !(entry==elem) VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L536] (new!=elem) ? (0) : __blast_assert () VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L3] __assert_fail("0", "rule60_list2.c_1.i", 3, "reach_error") VAL [elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 892 SDslu, 605 SDs, 0 SdLazy, 725 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, 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, 10 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 19663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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...