./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD --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 b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:45:43,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:45:43,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:45:43,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:45:43,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:45:43,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:45:43,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:45:43,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:45:43,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:45:43,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:45:43,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:45:43,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:45:43,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:45:43,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:45:43,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:45:43,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:45:43,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:45:43,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:45:43,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:45:43,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:45:43,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:45:43,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:45:43,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:45:43,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:45:43,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:45:43,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:45:43,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:45:43,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:45:43,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:45:43,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:45:43,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:45:43,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:45:43,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:45:43,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:45:43,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:45:43,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:45:43,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:45:43,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:45:43,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:45:43,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:45:43,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:45:43,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:45:43,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:45:43,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:45:43,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:45:43,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:45:43,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:45:43,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:45:43,798 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:45:43,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:45:43,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:45:43,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:45:43,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:45:43,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:45:43,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:45:43,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:45:43,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:45:43,800 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:45:43,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:45:43,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:45:43,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:45:43,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:45:43,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:45:43,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:45:43,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:45:43,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:45:43,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:45:43,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:45:43,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:45:43,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:45:43,803 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:45:43,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:45:43,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:45:43,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:45:43,804 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_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b38f47c3dcd7731e15cfc2cee00261f352bac0ed4fe94aeeb81a5c76defb252d [2021-10-28 23:45:44,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:45:44,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:45:44,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:45:44,130 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:45:44,131 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:45:44,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2021-10-28 23:45:44,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/data/95f3b8a3b/49be9d620b57407694b90f6527c7bd10/FLAG87c5c36e4 [2021-10-28 23:45:44,777 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:45:44,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/sv-benchmarks/c/loop-invgen/NetBSD_loop.i [2021-10-28 23:45:44,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/data/95f3b8a3b/49be9d620b57407694b90f6527c7bd10/FLAG87c5c36e4 [2021-10-28 23:45:45,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/data/95f3b8a3b/49be9d620b57407694b90f6527c7bd10 [2021-10-28 23:45:45,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:45:45,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:45:45,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:45:45,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:45:45,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:45:45,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ece82a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45, skipping insertion in model container [2021-10-28 23:45:45,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:45:45,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:45:45,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2021-10-28 23:45:45,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:45:45,373 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:45:45,389 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/sv-benchmarks/c/loop-invgen/NetBSD_loop.i[893,906] [2021-10-28 23:45:45,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:45:45,412 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:45:45,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45 WrapperNode [2021-10-28 23:45:45,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:45:45,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:45:45,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:45:45,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:45:45,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:45:45,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:45:45,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:45:45,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:45:45,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:45:45,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:45:45,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:45:45,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:45:45,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (1/1) ... [2021-10-28 23:45:45,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:45:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:45,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:45:45,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:45:45,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:45:45,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:45:45,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:45:45,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:45:45,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:45:45,842 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:45:45,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:45:45 BoogieIcfgContainer [2021-10-28 23:45:45,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:45:45,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:45:45,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:45:45,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:45:45,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:45:45" (1/3) ... [2021-10-28 23:45:45,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6654ac0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:45:45, skipping insertion in model container [2021-10-28 23:45:45,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:45:45" (2/3) ... [2021-10-28 23:45:45,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6654ac0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:45:45, skipping insertion in model container [2021-10-28 23:45:45,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:45:45" (3/3) ... [2021-10-28 23:45:45,857 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2021-10-28 23:45:45,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:45:45,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 23:45:45,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:45:45,938 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:45:45,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 23:45:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:45:45,964 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:45,964 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:45,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1804971340, now seen corresponding path program 1 times [2021-10-28 23:45:45,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:45,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543469177] [2021-10-28 23:45:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:45,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:46,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:46,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543469177] [2021-10-28 23:45:46,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543469177] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:45:46,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:45:46,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:45:46,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850216182] [2021-10-28 23:45:46,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:45:46,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:45:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:45:46,293 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:46,384 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-10-28 23:45:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:45:46,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 23:45:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:46,417 INFO L225 Difference]: With dead ends: 37 [2021-10-28 23:45:46,417 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 23:45:46,421 INFO L786 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 [2021-10-28 23:45:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 23:45:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-28 23:45:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-28 23:45:46,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2021-10-28 23:45:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:46,460 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-28 23:45:46,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-28 23:45:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:45:46,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:46,462 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:46,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:45:46,463 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash -589174129, now seen corresponding path program 1 times [2021-10-28 23:45:46,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:46,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753165968] [2021-10-28 23:45:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:46,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:46,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:46,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753165968] [2021-10-28 23:45:46,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753165968] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:45:46,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:45:46,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:45:46,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406010687] [2021-10-28 23:45:46,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:45:46,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:45:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:45:46,661 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:46,744 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-28 23:45:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:45:46,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:45:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:46,746 INFO L225 Difference]: With dead ends: 18 [2021-10-28 23:45:46,746 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 23:45:46,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:45:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 23:45:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-28 23:45:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-28 23:45:46,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-28 23:45:46,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:46,756 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-28 23:45:46,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-28 23:45:46,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 23:45:46,757 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:46,758 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:46,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:45:46,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:46,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:46,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1597097285, now seen corresponding path program 1 times [2021-10-28 23:45:46,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:46,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136838413] [2021-10-28 23:45:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:46,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:46,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:46,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136838413] [2021-10-28 23:45:46,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136838413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:46,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759905062] [2021-10-28 23:45:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:46,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:46,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:46,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:45:46,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:45:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:45:46,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:45:47,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759905062] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:47,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:45:47,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-28 23:45:47,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969000141] [2021-10-28 23:45:47,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:45:47,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:45:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:45:47,362 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:47,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:47,517 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-28 23:45:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:45:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 23:45:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:47,520 INFO L225 Difference]: With dead ends: 24 [2021-10-28 23:45:47,520 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 23:45:47,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:45:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 23:45:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-10-28 23:45:47,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-28 23:45:47,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 14 [2021-10-28 23:45:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:47,549 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-28 23:45:47,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-28 23:45:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:45:47,551 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:45:47,551 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 23:45:47,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:45:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:47,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:45:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:45:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash 759966799, now seen corresponding path program 2 times [2021-10-28 23:45:47,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:45:47,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106107997] [2021-10-28 23:45:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:45:47,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:45:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:45:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:45:47,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:45:47,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106107997] [2021-10-28 23:45:47,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106107997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:47,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444711557] [2021-10-28 23:45:47,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 23:45:47,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:47,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:45:47,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:45:47,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:45:47,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 23:45:47,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 23:45:47,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 23:45:48,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:45:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 23:45:48,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444711557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:45:48,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:45:48,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-28 23:45:48,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710132081] [2021-10-28 23:45:48,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:45:48,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:45:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:45:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:45:48,137 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:45:48,196 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-28 23:45:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:45:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-28 23:45:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:45:48,197 INFO L225 Difference]: With dead ends: 20 [2021-10-28 23:45:48,197 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:45:48,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:45:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:45:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:45:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:45:48,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-28 23:45:48,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:45:48,200 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:45:48,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:45:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:45:48,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:45:48,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:45:48,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:45:48,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:45:48,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:45:48,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:45:48,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:45:48,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:45:48,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:45:48,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:45:48,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:45:48,574 INFO L857 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-28 23:45:48,575 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:45:48,575 INFO L857 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-10-28 23:45:48,575 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 23:45:48,575 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 23:45:48,575 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-28 23:45:48,576 INFO L860 garLoopResultBuilder]: At program point L44(lines 25 45) the Hoare annotation is: true [2021-10-28 23:45:48,576 INFO L860 garLoopResultBuilder]: At program point L44-1(lines 24 45) the Hoare annotation is: true [2021-10-28 23:45:48,576 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0)) (.cse1 (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0))) (or (and (= ULTIMATE.start_main_~glob2_p_off~0 0) .cse0 .cse1) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (<= 0 ULTIMATE.start_main_~glob2_p_off~0)))) [2021-10-28 23:45:48,577 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:45:48,577 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:45:48,577 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:45:48,577 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 23:45:48,577 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 23:45:48,578 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-28 23:45:48,578 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-28 23:45:48,578 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 1 45) the Hoare annotation is: (and (<= ULTIMATE.start_main_~glob2_p_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~MAXPATHLEN~0) (<= ULTIMATE.start_main_~glob2_pathlim_off~0 ULTIMATE.start_main_~MAXPATHLEN~0) (<= 0 ULTIMATE.start_main_~glob2_p_off~0)) [2021-10-28 23:45:48,582 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-10-28 23:45:48,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:45:48,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:45:48 BoogieIcfgContainer [2021-10-28 23:45:48,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:45:48,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:45:48,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:45:48,603 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:45:48,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:45:45" (3/4) ... [2021-10-28 23:45:48,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:45:48,619 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 23:45:48,619 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:45:48,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:45:48,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:45:48,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:45:48,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:45:48,669 INFO L168 Benchmark]: Toolchain (without parser) took 3567.45 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 49.7 MB in the beginning and 63.8 MB in the end (delta: -14.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,670 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:45:48,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.65 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 49.5 MB in the beginning and 89.3 MB in the end (delta: -39.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,671 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 87.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,672 INFO L168 Benchmark]: Boogie Preprocessor took 26.60 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 86.9 MB in the end (delta: 853.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,672 INFO L168 Benchmark]: RCFGBuilder took 360.46 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 77.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,673 INFO L168 Benchmark]: TraceAbstraction took 2754.11 ms. Allocated memory is still 113.2 MB. Free memory was 77.0 MB in the beginning and 66.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,674 INFO L168 Benchmark]: Witness Printer took 65.52 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 63.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:45:48,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.65 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 49.5 MB in the beginning and 89.3 MB in the end (delta: -39.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.15 ms. Allocated memory is still 113.2 MB. Free memory was 89.3 MB in the beginning and 87.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.60 ms. Allocated memory is still 113.2 MB. Free memory was 87.7 MB in the beginning and 86.9 MB in the end (delta: 853.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 360.46 ms. Allocated memory is still 113.2 MB. Free memory was 86.6 MB in the beginning and 77.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2754.11 ms. Allocated memory is still 113.2 MB. Free memory was 77.0 MB in the beginning and 66.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 65.52 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 63.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 46 SDslu, 55 SDs, 0 SdLazy, 73 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 59 HoareAnnotationTreeSize, 5 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 82 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 11 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 14/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((glob2_p_off <= MAXPATHLEN && 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && !(0 == cond) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((glob2_p_off <= MAXPATHLEN && 1 <= cond) && 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((glob2_p_off == 0 && 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) || (((1 <= cond && 1 <= MAXPATHLEN) && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:45:48,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e97b02c0-cf45-481a-a4a7-1bd4d2f77436/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...