./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s52iff.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_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s52iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/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 0faaa8d120428ed7604b6b4c759776b69e800fbd ............................................................................................................................................................................................................................................................................................................................................................... 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 14:54:09,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:54:09,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:54:09,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:54:09,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:54:09,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:54:09,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:54:09,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:54:09,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:54:09,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:54:09,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:54:09,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:54:09,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:54:09,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:54:09,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:54:09,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:54:09,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:54:09,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:54:09,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:54:09,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:54:09,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:54:09,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:54:09,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:54:09,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:54:09,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:54:09,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:54:09,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:54:09,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:54:09,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:54:09,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:54:09,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:54:09,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:54:09,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:54:09,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:54:09,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:54:09,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:54:09,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:54:09,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:54:09,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:54:09,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:54:09,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:54:09,653 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:54:09,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:54:09,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:54:09,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:54:09,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:54:09,694 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:54:09,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:54:09,694 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:54:09,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:54:09,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:54:09,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:54:09,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:54:09,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:54:09,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:54:09,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:54:09,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:54:09,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:54:09,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:54:09,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:54:09,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:54:09,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:54:09,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:54:09,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:54:09,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:54:09,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:54:09,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:54:09,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:54:09,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:54:09,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:54:09,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:54:09,701 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_27159e01-4a69-41ed-a77c-4a8846d71d92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0faaa8d120428ed7604b6b4c759776b69e800fbd [2020-12-01 14:54:09,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:54:10,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:54:10,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:54:10,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:54:10,044 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:54:10,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s52iff.c [2020-12-01 14:54:10,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/data/f5e529b03/3b68073fa32943eaaeb84a33b27d3ee7/FLAG37c1be3d0 [2020-12-01 14:54:10,561 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:54:10,562 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/sv-benchmarks/c/array-fpi/s52iff.c [2020-12-01 14:54:10,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/data/f5e529b03/3b68073fa32943eaaeb84a33b27d3ee7/FLAG37c1be3d0 [2020-12-01 14:54:10,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/data/f5e529b03/3b68073fa32943eaaeb84a33b27d3ee7 [2020-12-01 14:54:10,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:54:10,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:54:10,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:10,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:54:10,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:54:10,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:10" (1/1) ... [2020-12-01 14:54:10,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fbc9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:10, skipping insertion in model container [2020-12-01 14:54:10,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:54:10" (1/1) ... [2020-12-01 14:54:10,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:54:11,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:54:11,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:11,209 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:54:11,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:54:11,245 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:54:11,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11 WrapperNode [2020-12-01 14:54:11,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:54:11,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:11,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:54:11,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:54:11,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:54:11,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:54:11,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:54:11,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:54:11,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... [2020-12-01 14:54:11,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:54:11,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:54:11,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:54:11,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:54:11,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/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 14:54:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:54:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:54:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:54:11,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 14:54:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:54:11,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:54:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 14:54:11,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:54:11,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:54:11,690 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 14:54:11,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:11 BoogieIcfgContainer [2020-12-01 14:54:11,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:54:11,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:54:11,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:54:11,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:54:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:54:10" (1/3) ... [2020-12-01 14:54:11,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5398e821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:11, skipping insertion in model container [2020-12-01 14:54:11,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:54:11" (2/3) ... [2020-12-01 14:54:11,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5398e821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:54:11, skipping insertion in model container [2020-12-01 14:54:11,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:11" (3/3) ... [2020-12-01 14:54:11,709 INFO L111 eAbstractionObserver]: Analyzing ICFG s52iff.c [2020-12-01 14:54:11,731 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:54:11,735 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:54:11,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:54:11,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:54:11,780 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:54:11,780 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:54:11,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:54:11,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:54:11,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:54:11,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:54:11,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:54:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-01 14:54:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:54:11,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:11,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:11,798 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:11,803 INFO L82 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2020-12-01 14:54:11,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:11,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432616439] [2020-12-01 14:54:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:11,946 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 14:54:11,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432616439] [2020-12-01 14:54:11,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:11,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:54:11,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332930854] [2020-12-01 14:54:11,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:54:11,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:11,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:54:11,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:54:11,969 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-12-01 14:54:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:12,024 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2020-12-01 14:54:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:54:12,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 14:54:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:12,055 INFO L225 Difference]: With dead ends: 43 [2020-12-01 14:54:12,056 INFO L226 Difference]: Without dead ends: 19 [2020-12-01 14:54:12,074 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 14:54:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-01 14:54:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-01 14:54:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-01 14:54:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-12-01 14:54:12,124 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2020-12-01 14:54:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:12,125 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-12-01 14:54:12,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:54:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-12-01 14:54:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:54:12,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:12,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:54:12,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:54:12,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2020-12-01 14:54:12,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:12,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144390117] [2020-12-01 14:54:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:54:12,306 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 14:54:12,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144390117] [2020-12-01 14:54:12,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:54:12,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:54:12,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337349628] [2020-12-01 14:54:12,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:54:12,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:54:12,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:54:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:54:12,316 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2020-12-01 14:54:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:54:12,413 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-12-01 14:54:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:54:12,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 14:54:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:54:12,415 INFO L225 Difference]: With dead ends: 39 [2020-12-01 14:54:12,415 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 14:54:12,416 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 14:54:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 14:54:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-01 14:54:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 14:54:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-12-01 14:54:12,422 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2020-12-01 14:54:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:54:12,423 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-12-01 14:54:12,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:54:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-12-01 14:54:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 14:54:12,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:54:12,424 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] [2020-12-01 14:54:12,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:54:12,425 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:54:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:54:12,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2020-12-01 14:54:12,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:54:12,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760741951] [2020-12-01 14:54:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:54:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:12,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:54:12,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:54:12,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:54:12,608 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:54:12,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:54:12,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:54:12 BoogieIcfgContainer [2020-12-01 14:54:12,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:54:12,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:54:12,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:54:12,670 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:54:12,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:54:11" (3/4) ... [2020-12-01 14:54:12,673 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 14:54:12,720 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_27159e01-4a69-41ed-a77c-4a8846d71d92/bin/uautomizer/witness.graphml [2020-12-01 14:54:12,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:54:12,732 INFO L168 Benchmark]: Toolchain (without parser) took 1759.24 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 57.5 MB in the beginning and 67.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,733 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:54:12,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.44 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 65.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,737 INFO L168 Benchmark]: Boogie Preprocessor took 47.46 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,738 INFO L168 Benchmark]: RCFGBuilder took 358.60 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 46.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,738 INFO L168 Benchmark]: TraceAbstraction took 976.17 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 46.4 MB in the beginning and 70.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,739 INFO L168 Benchmark]: Witness Printer took 50.13 ms. Allocated memory is still 115.3 MB. Free memory was 70.7 MB in the beginning and 67.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:54:12,745 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 88.1 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.44 ms. Allocated memory is still 88.1 MB. Free memory was 57.3 MB in the beginning and 65.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 88.1 MB. Free memory was 65.8 MB in the beginning and 64.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.46 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.60 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 46.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 976.17 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 46.4 MB in the beginning and 70.7 MB in the end (delta: -24.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 50.13 ms. Allocated memory is still 115.3 MB. Free memory was 70.7 MB in the beginning and 67.6 MB in the end (delta: 3.1 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); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i