./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res1of.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res1of.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5f15344d08b2b8f145bd5ac745da23b8e1db7b8 .................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:45:15,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:45:15,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:45:15,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:45:15,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:45:15,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:45:15,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:45:15,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:45:15,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:45:15,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:45:15,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:45:15,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:45:15,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:45:15,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:45:15,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:45:15,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:45:15,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:45:15,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:45:15,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:45:15,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:45:15,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:45:15,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:45:15,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:45:15,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:45:15,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:45:15,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:45:15,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:45:15,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:45:15,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:45:15,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:45:15,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:45:15,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:45:15,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:45:15,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:45:15,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:45:15,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:45:15,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:45:15,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:45:15,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:45:15,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:45:15,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:45:15,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:45:15,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:45:15,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:45:15,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:45:15,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:45:15,506 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:45:15,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:45:15,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:45:15,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:45:15,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:45:15,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:45:15,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:45:15,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:45:15,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:45:15,509 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:45:15,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:45:15,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:45:15,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:45:15,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:45:15,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:45:15,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:45:15,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:45:15,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:45:15,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:45:15,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:45:15,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:45:15,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:45:15,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:45:15,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:45:15,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:45:15,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5f15344d08b2b8f145bd5ac745da23b8e1db7b8 [2020-12-01 15:45:15,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:45:15,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:45:15,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:45:15,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:45:15,852 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:45:15,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/../../sv-benchmarks/c/array-fpi/res1of.c [2020-12-01 15:45:15,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/data/b7b4f23b5/b3086f2d948b4edf8e9322d86b5e44d8/FLAG227e4bfb8 [2020-12-01 15:45:16,460 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:45:16,460 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/sv-benchmarks/c/array-fpi/res1of.c [2020-12-01 15:45:16,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/data/b7b4f23b5/b3086f2d948b4edf8e9322d86b5e44d8/FLAG227e4bfb8 [2020-12-01 15:45:16,830 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/data/b7b4f23b5/b3086f2d948b4edf8e9322d86b5e44d8 [2020-12-01 15:45:16,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:45:16,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:45:16,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:45:16,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:45:16,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:45:16,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:45:16" (1/1) ... [2020-12-01 15:45:16,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0a9d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:16, skipping insertion in model container [2020-12-01 15:45:16,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:45:16" (1/1) ... [2020-12-01 15:45:16,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:45:16,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:45:17,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:45:17,156 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:45:17,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:45:17,217 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:45:17,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17 WrapperNode [2020-12-01 15:45:17,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:45:17,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:45:17,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:45:17,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:45:17,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:45:17,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:45:17,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:45:17,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:45:17,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... [2020-12-01 15:45:17,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:45:17,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:45:17,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:45:17,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:45:17,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:45:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:45:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:45:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:45:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:45:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:45:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:45:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:45:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:45:17,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:45:17,876 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-01 15:45:17,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:45:17 BoogieIcfgContainer [2020-12-01 15:45:17,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:45:17,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:45:17,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:45:17,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:45:17,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:45:16" (1/3) ... [2020-12-01 15:45:17,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e480b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:45:17, skipping insertion in model container [2020-12-01 15:45:17,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:45:17" (2/3) ... [2020-12-01 15:45:17,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e480b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:45:17, skipping insertion in model container [2020-12-01 15:45:17,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:45:17" (3/3) ... [2020-12-01 15:45:17,902 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-12-01 15:45:17,918 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:45:17,927 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:45:17,939 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:45:17,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:45:17,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:45:17,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:45:17,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:45:17,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:45:17,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:45:17,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:45:17,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:45:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-01 15:45:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:45:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:18,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:18,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-12-01 15:45:18,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:18,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249856463] [2020-12-01 15:45:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:45:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:45:18,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249856463] [2020-12-01 15:45:18,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:45:18,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:45:18,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416121125] [2020-12-01 15:45:18,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:45:18,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:18,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:45:18,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:45:18,277 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-01 15:45:18,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:18,301 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-12-01 15:45:18,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:45:18,302 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-12-01 15:45:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:18,312 INFO L225 Difference]: With dead ends: 45 [2020-12-01 15:45:18,313 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:45:18,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:45:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:45:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-01 15:45:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:45:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-01 15:45:18,368 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-12-01 15:45:18,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:18,369 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-01 15:45:18,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:45:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-01 15:45:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:45:18,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:18,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:18,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:45:18,372 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:18,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:18,375 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-12-01 15:45:18,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:18,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333892471] [2020-12-01 15:45:18,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:45:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:45:18,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333892471] [2020-12-01 15:45:18,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:45:18,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:45:18,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134422310] [2020-12-01 15:45:18,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:45:18,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:45:18,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:45:18,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:45:18,617 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-01 15:45:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:45:18,719 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-12-01 15:45:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:45:18,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-01 15:45:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:45:18,724 INFO L225 Difference]: With dead ends: 41 [2020-12-01 15:45:18,724 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 15:45:18,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:45:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 15:45:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-12-01 15:45:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:45:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-01 15:45:18,739 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-12-01 15:45:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:45:18,739 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-01 15:45:18,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:45:18,741 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-01 15:45:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:45:18,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:45:18,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:45:18,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:45:18,744 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:45:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:45:18,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-12-01 15:45:18,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:45:18,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878422145] [2020-12-01 15:45:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:45:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:45:18,860 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:45:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:45:18,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:45:18,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:45:18,931 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:45:18,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:45:18,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:45:18 BoogieIcfgContainer [2020-12-01 15:45:18,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:45:18,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:45:18,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:45:18,988 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:45:18,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:45:17" (3/4) ... [2020-12-01 15:45:18,991 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:45:19,053 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d99419c2-dfab-4786-9583-731ffad09da8/bin/uautomizer/witness.graphml [2020-12-01 15:45:19,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:45:19,055 INFO L168 Benchmark]: Toolchain (without parser) took 2218.28 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 74.4 MB in the beginning and 88.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,056 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:45:19,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.99 ms. Allocated memory is still 102.8 MB. Free memory was 74.4 MB in the beginning and 80.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.22 ms. Allocated memory is still 102.8 MB. Free memory was 80.4 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,059 INFO L168 Benchmark]: Boogie Preprocessor took 53.00 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:45:19,060 INFO L168 Benchmark]: RCFGBuilder took 553.51 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 61.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,061 INFO L168 Benchmark]: TraceAbstraction took 1093.41 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 61.5 MB in the beginning and 90.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 183.0 kB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,062 INFO L168 Benchmark]: Witness Printer took 65.30 ms. Allocated memory is still 132.1 MB. Free memory was 90.9 MB in the beginning and 88.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:45:19,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 379.99 ms. Allocated memory is still 102.8 MB. Free memory was 74.4 MB in the beginning and 80.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.22 ms. Allocated memory is still 102.8 MB. Free memory was 80.4 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.00 ms. Allocated memory is still 102.8 MB. Free memory was 79.0 MB in the beginning and 77.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 553.51 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 61.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1093.41 ms. Allocated memory was 102.8 MB in the beginning and 132.1 MB in the end (delta: 29.4 MB). Free memory was 61.5 MB in the beginning and 90.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 183.0 kB. Max. memory is 16.1 GB. * Witness Printer took 65.30 ms. Allocated memory is still 132.1 MB. Free memory was 90.9 MB in the beginning and 88.2 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.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 VAL [N=1] [L33] COND TRUE i