./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/array_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be --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 f1476526c0a7c864e0f43f0a8231ffd3d7c324e1f397c219fdbe228643d49425 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:21:56,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:21:56,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:21:56,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:21:56,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:21:56,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:21:56,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:21:56,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:21:56,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:21:56,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:21:56,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:21:56,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:21:56,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:21:56,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:21:56,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:21:56,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:21:56,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:21:56,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:21:56,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:21:56,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:21:56,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:21:56,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:21:56,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:21:56,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:21:56,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:21:56,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:21:56,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:21:56,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:21:56,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:21:56,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:21:56,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:21:56,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:21:56,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:21:56,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:21:56,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:21:56,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:21:56,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:21:56,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:21:56,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:21:56,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:21:56,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:21:56,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:21:56,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:21:56,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:21:56,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:21:56,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:21:56,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:21:56,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:21:56,440 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:21:56,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:21:56,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:21:56,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:21:56,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:21:56,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:21:56,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:21:56,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:21:56,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:21:56,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:21:56,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:21:56,443 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:21:56,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:21:56,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:21:56,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:21:56,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:21:56,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:56,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:21:56,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:21:56,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:21:56,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:21:56,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:21:56,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:21:56,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:21:56,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:21:56,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:21:56,449 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_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1476526c0a7c864e0f43f0a8231ffd3d7c324e1f397c219fdbe228643d49425 [2021-10-21 20:21:56,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:21:56,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:21:56,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:21:56,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:21:56,819 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:21:56,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-21 20:21:56,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/data/38848118b/8ce068e8f7cd4e18868c03478d6eb41c/FLAGbda9cb56b [2021-10-21 20:21:57,341 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:21:57,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/sv-benchmarks/c/loop-acceleration/array_1-2.c [2021-10-21 20:21:57,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/data/38848118b/8ce068e8f7cd4e18868c03478d6eb41c/FLAGbda9cb56b [2021-10-21 20:21:57,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/data/38848118b/8ce068e8f7cd4e18868c03478d6eb41c [2021-10-21 20:21:57,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:21:57,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:21:57,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:57,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:21:57,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:21:57,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a00fa27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57, skipping insertion in model container [2021-10-21 20:21:57,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:21:57,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:21:57,914 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_8e024e7a-6b32-4ea5-aa89-0276c125e059/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-21 20:21:57,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:57,932 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:21:57,945 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_8e024e7a-6b32-4ea5-aa89-0276c125e059/sv-benchmarks/c/loop-acceleration/array_1-2.c[321,334] [2021-10-21 20:21:57,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:57,960 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:21:57,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57 WrapperNode [2021-10-21 20:21:57,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:57,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:21:57,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:21:57,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:21:57,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:21:57,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:21:57,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:21:57,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:21:57,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:57,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:58,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:58,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:58,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:58,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:21:58,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:21:58,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:21:58,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:21:58,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (1/1) ... [2021-10-21 20:21:58,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:58,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:58,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:21:58,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:21:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:21:58,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:21:58,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:21:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:21:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:21:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:21:58,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:21:58,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:21:58,281 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-21 20:21:58,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:58 BoogieIcfgContainer [2021-10-21 20:21:58,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:21:58,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:21:58,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:21:58,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:21:58,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:21:57" (1/3) ... [2021-10-21 20:21:58,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45febf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:58, skipping insertion in model container [2021-10-21 20:21:58,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:57" (2/3) ... [2021-10-21 20:21:58,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45febf2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:58, skipping insertion in model container [2021-10-21 20:21:58,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:58" (3/3) ... [2021-10-21 20:21:58,291 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2021-10-21 20:21:58,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:21:58,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:21:58,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:21:58,348 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 [2021-10-21 20:21:58,349 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:21:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-10-21 20:21:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:21:58,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:58,367 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:21:58,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:21:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:58,373 INFO L82 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-10-21 20:21:58,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:58,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709877608] [2021-10-21 20:21:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:58,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:58,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:58,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709877608] [2021-10-21 20:21:58,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709877608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:58,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:58,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:21:58,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598691378] [2021-10-21 20:21:58,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:58,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:58,585 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:58,621 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-21 20:21:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:58,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:21:58,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:58,630 INFO L225 Difference]: With dead ends: 22 [2021-10-21 20:21:58,643 INFO L226 Difference]: Without dead ends: 10 [2021-10-21 20:21:58,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-21 20:21:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-10-21 20:21:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-10-21 20:21:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-21 20:21:58,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-21 20:21:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:58,712 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-21 20:21:58,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-21 20:21:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:21:58,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:58,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:58,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:21:58,714 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:21:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-10-21 20:21:58,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:58,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254423274] [2021-10-21 20:21:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:58,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:58,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:58,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254423274] [2021-10-21 20:21:58,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254423274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:58,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635742739] [2021-10-21 20:21:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:58,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:58,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:58,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:21:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:58,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:21:58,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:58,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635742739] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:58,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:21:58,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-21 20:21:58,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204384872] [2021-10-21 20:21:58,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:58,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:58,921 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 20:21:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:58,952 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-21 20:21:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) Word has length 8 [2021-10-21 20:21:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:58,954 INFO L225 Difference]: With dead ends: 16 [2021-10-21 20:21:58,954 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 20:21:58,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:21:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 20:21:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-10-21 20:21:58,959 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) [2021-10-21 20:21:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-21 20:21:58,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-10-21 20:21:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-21 20:21:58,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-10-21 20:21:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-21 20:21:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:21:58,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:58,968 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:59,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:59,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:59,191 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:21:59,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2021-10-21 20:21:59,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:59,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421920277] [2021-10-21 20:21:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:59,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:59,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:59,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421920277] [2021-10-21 20:21:59,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421920277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:59,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776446525] [2021-10-21 20:21:59,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:21:59,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:59,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:59,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:59,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:21:59,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:21:59,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:21:59,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:21:59,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:59,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776446525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:59,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:21:59,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 20:21:59,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591663403] [2021-10-21 20:21:59,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:59,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:59,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:59,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:59,446 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-21 20:21:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:59,464 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-21 20:21:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:59,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10 [2021-10-21 20:21:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:59,465 INFO L225 Difference]: With dead ends: 18 [2021-10-21 20:21:59,465 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 20:21:59,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:21:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 20:21:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-21 20:21:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-21 20:21:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-21 20:21:59,469 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2021-10-21 20:21:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:59,470 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-21 20:21:59,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-21 20:21:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-21 20:21:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:59,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:59,471 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:59,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:59,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:59,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:21:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:59,688 INFO L82 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 3 times [2021-10-21 20:21:59,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:59,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695724383] [2021-10-21 20:21:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:59,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:59,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695724383] [2021-10-21 20:21:59,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695724383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:59,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806958029] [2021-10-21 20:21:59,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:21:59,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:59,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:59,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:59,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:21:59,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 20:21:59,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:21:59,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:21:59,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:59,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-21 20:22:00,215 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-21 20:22:00,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 32 [2021-10-21 20:22:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:22:00,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806958029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:22:00,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:22:00,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-10-21 20:22:00,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214612870] [2021-10-21 20:22:00,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:22:00,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:22:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:22:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:22:00,277 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-21 20:22:02,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:22:02,392 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-21 20:22:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:22:02,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 12 [2021-10-21 20:22:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:22:02,393 INFO L225 Difference]: With dead ends: 13 [2021-10-21 20:22:02,393 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:22:02,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:22:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:22:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:22:02,395 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) [2021-10-21 20:22:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:22:02,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-21 20:22:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:22:02,395 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:22:02,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-21 20:22:02,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:22:02,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:22:02,399 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:22:02,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:22:02,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:22:02,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:22:02,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:22:02,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:22:02,625 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:22:02,626 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-21 20:22:02,626 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:22:02,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:22:02,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:22:02,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-21 20:22:02,627 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2021-10-21 20:22:02,627 INFO L853 garLoopResultBuilder]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (exists ((v_ULTIMATE.start_main_~i~0_12 Int)) (and (< v_ULTIMATE.start_main_~i~0_12 1024) (<= ULTIMATE.start_main_~i~0 (+ v_ULTIMATE.start_main_~i~0_12 1)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0.base|) (+ |ULTIMATE.start_main_~#A~0.offset| (* v_ULTIMATE.start_main_~i~0_12 4))) v_ULTIMATE.start_main_~i~0_12))) (= ULTIMATE.start_main_~i~0 0)) [2021-10-21 20:22:02,627 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2021-10-21 20:22:02,627 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 21) no Hoare annotation was computed. [2021-10-21 20:22:02,628 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-21 20:22:02,628 INFO L860 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-10-21 20:22:02,635 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:22:02,646 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,646 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,647 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,648 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,653 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,653 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,655 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,659 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:22:02 BoogieIcfgContainer [2021-10-21 20:22:02,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:22:02,661 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:22:02,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:22:02,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:22:02,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:58" (3/4) ... [2021-10-21 20:22:02,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:22:02,673 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-21 20:22:02,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:22:02,674 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 20:22:02,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:22:02,705 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && i <= v_ULTIMATE.start_main_~i~0_12 + 1) && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) || i == 0 [2021-10-21 20:22:02,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:22:02,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:22:02,715 INFO L168 Benchmark]: Toolchain (without parser) took 4975.81 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 56.4 MB in the beginning and 72.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,716 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:22:02,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 66.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.96 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,718 INFO L168 Benchmark]: Boogie Preprocessor took 20.38 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,719 INFO L168 Benchmark]: RCFGBuilder took 272.58 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 55.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,719 INFO L168 Benchmark]: TraceAbstraction took 4376.10 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 75.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,720 INFO L168 Benchmark]: Witness Printer took 52.46 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 72.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:22:02,724 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 29.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.17 ms. Allocated memory is still 90.2 MB. Free memory was 56.1 MB in the beginning and 66.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.96 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 65.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.38 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 272.58 ms. Allocated memory is still 90.2 MB. Free memory was 64.0 MB in the beginning and 55.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4376.10 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.6 MB in the beginning and 75.6 MB in the end (delta: -20.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 52.46 ms. Allocated memory is still 115.3 MB. Free memory was 75.6 MB in the beginning and 72.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4294.3ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 14.6ms, AutomataDifference: 2280.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 24.8ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 9 SDslu, 35 SDs, 0 SdLazy, 47 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2091.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 151.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 42.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 7.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 11.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.7ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 771.6ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 2 QuantifiedInterpolants, 161 SizeOfPredicates, 6 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2021-10-21 20:22:02,735 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,736 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,736 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,736 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,737 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,737 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,737 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] [2021-10-21 20:22:02,737 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0_12,QUANTIFIED] Derived loop invariant: (\exists v_ULTIMATE.start_main_~i~0_12 : int :: (v_ULTIMATE.start_main_~i~0_12 < 1024 && i <= v_ULTIMATE.start_main_~i~0_12 + 1) && unknown-#memory_int-unknown[A][A + v_ULTIMATE.start_main_~i~0_12 * 4] == v_ULTIMATE.start_main_~i~0_12) || i == 0 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:22:02,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e024e7a-6b32-4ea5-aa89-0276c125e059/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...