./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/terminator_02-1.c --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_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/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_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/terminator_02-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/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_7326665a-1650-4096-87a7-175cc43d87c8/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 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b ................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-28 23:00:50,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:00:50,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:00:50,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:00:50,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:00:50,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:00:50,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:00:50,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:00:50,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:00:50,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:00:50,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:00:50,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:00:50,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:00:50,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:00:50,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:00:50,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:00:50,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:00:50,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:00:50,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:00:50,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:00:51,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:00:51,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:00:51,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:00:51,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:00:51,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:00:51,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:00:51,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:00:51,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:00:51,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:00:51,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:00:51,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:00:51,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:00:51,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:00:51,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:00:51,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:00:51,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:00:51,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:00:51,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:00:51,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:00:51,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:00:51,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:00:51,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:00:51,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:00:51,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:00:51,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:00:51,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:00:51,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:00:51,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:00:51,102 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:00:51,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:00:51,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:00:51,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:00:51,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:00:51,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:00:51,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:00:51,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:00:51,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:00:51,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:00:51,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:00:51,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:00:51,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:00:51,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:00:51,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:00:51,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:00:51,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:00:51,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:00:51,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:00:51,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:00:51,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:00:51,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:00:51,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:00:51,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:00:51,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:00:51,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:00:51,112 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_7326665a-1650-4096-87a7-175cc43d87c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b [2021-10-28 23:00:51,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:00:51,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:00:51,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:00:51,368 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:00:51,369 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:00:51,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loops/terminator_02-1.c [2021-10-28 23:00:51,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/data/990ce84e7/e9356a91147b42e1857b26423fde6495/FLAGc659d1d3b [2021-10-28 23:00:51,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:00:51,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/sv-benchmarks/c/loops/terminator_02-1.c [2021-10-28 23:00:51,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/data/990ce84e7/e9356a91147b42e1857b26423fde6495/FLAGc659d1d3b [2021-10-28 23:00:52,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/data/990ce84e7/e9356a91147b42e1857b26423fde6495 [2021-10-28 23:00:52,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:00:52,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:00:52,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:00:52,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:00:52,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:00:52,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf92992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52, skipping insertion in model container [2021-10-28 23:00:52,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:00:52,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:00:52,437 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_7326665a-1650-4096-87a7-175cc43d87c8/sv-benchmarks/c/loops/terminator_02-1.c[327,340] [2021-10-28 23:00:52,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:00:52,474 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:00:52,486 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_7326665a-1650-4096-87a7-175cc43d87c8/sv-benchmarks/c/loops/terminator_02-1.c[327,340] [2021-10-28 23:00:52,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:00:52,503 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:00:52,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52 WrapperNode [2021-10-28 23:00:52,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:00:52,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:00:52,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:00:52,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:00:52,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:00:52,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:00:52,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:00:52,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:00:52,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:00:52,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:00:52,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:00:52,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:00:52,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (1/1) ... [2021-10-28 23:00:52,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:00:52,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:00:52,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:00:52,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:00:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:00:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:00:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:00:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:00:52,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:00:52,910 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:00:52,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:52 BoogieIcfgContainer [2021-10-28 23:00:52,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:00:52,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:00:52,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:00:52,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:00:52,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:00:52" (1/3) ... [2021-10-28 23:00:52,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6778635f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:00:52, skipping insertion in model container [2021-10-28 23:00:52,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:00:52" (2/3) ... [2021-10-28 23:00:52,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6778635f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:00:52, skipping insertion in model container [2021-10-28 23:00:52,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:52" (3/3) ... [2021-10-28 23:00:52,921 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2021-10-28 23:00:52,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:00:52,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:00:52,988 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:00:52,997 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 23:00:52,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:00:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:53,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:00:53,039 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:53,039 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:00:53,040 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:00:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-10-28 23:00:53,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:53,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081728874] [2021-10-28 23:00:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:53,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:00:53,213 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 23:00:53,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:00:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081728874] [2021-10-28 23:00:53,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081728874] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:00:53,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:00:53,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:00:53,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533443566] [2021-10-28 23:00:53,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:00:53,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:00:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:00:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:00:53,238 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:00:53,248 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-28 23:00:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:00:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:00:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:00:53,256 INFO L225 Difference]: With dead ends: 20 [2021-10-28 23:00:53,257 INFO L226 Difference]: Without dead ends: 8 [2021-10-28 23:00:53,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:00:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-28 23:00:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:00:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-28 23:00:53,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-10-28 23:00:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:00:53,288 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 23:00:53,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:00:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-10-28 23:00:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:00:53,289 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:00:53,289 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:00:53,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:00:53,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:00:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:00:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-10-28 23:00:53,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:00:53,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679627650] [2021-10-28 23:00:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:00:53,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:00:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:00:53,316 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:00:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:00:53,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:00:53,353 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:00:53,355 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:00:53,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:00:53,360 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:00:53,363 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:00:53,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:00:53 BoogieIcfgContainer [2021-10-28 23:00:53,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:00:53,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:00:53,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:00:53,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:00:53,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:00:52" (3/4) ... [2021-10-28 23:00:53,383 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:00:53,422 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7326665a-1650-4096-87a7-175cc43d87c8/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:00:53,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:00:53,425 INFO L168 Benchmark]: Toolchain (without parser) took 1175.05 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 68.8 MB in the beginning and 97.1 MB in the end (delta: -28.2 MB). Peak memory consumption was 30.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,425 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:00:53,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.15 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 68.6 MB in the beginning and 96.6 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 121.6 MB. Free memory was 96.6 MB in the beginning and 95.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,427 INFO L168 Benchmark]: Boogie Preprocessor took 41.07 ms. Allocated memory is still 121.6 MB. Free memory was 95.4 MB in the beginning and 94.5 MB in the end (delta: 883.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:00:53,428 INFO L168 Benchmark]: RCFGBuilder took 321.02 ms. Allocated memory is still 121.6 MB. Free memory was 94.1 MB in the beginning and 84.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,429 INFO L168 Benchmark]: TraceAbstraction took 466.53 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 62.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,430 INFO L168 Benchmark]: Witness Printer took 42.08 ms. Allocated memory is still 121.6 MB. Free memory was 62.6 MB in the beginning and 97.1 MB in the end (delta: -34.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:00:53,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.15 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 68.6 MB in the beginning and 96.6 MB in the end (delta: -28.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 121.6 MB. Free memory was 96.6 MB in the beginning and 95.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.07 ms. Allocated memory is still 121.6 MB. Free memory was 95.4 MB in the beginning and 94.5 MB in the end (delta: 883.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 321.02 ms. Allocated memory is still 121.6 MB. Free memory was 94.1 MB in the beginning and 84.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 466.53 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 62.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.08 ms. Allocated memory is still 121.6 MB. Free memory was 62.6 MB in the beginning and 97.1 MB in the end (delta: -34.5 MB). Peak memory consumption was 6.1 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 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100