./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s5iff.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_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s5iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/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 fb3f8e38e781ce176014f904e2a60394b3e06270 ................................................................................................................................................................................................................................................................................................................................................... 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 15:57:38,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:57:38,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:57:38,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:57:38,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:57:38,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:57:38,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:57:38,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:57:38,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:57:39,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:57:39,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:57:39,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:57:39,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:57:39,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:57:39,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:57:39,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:57:39,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:57:39,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:57:39,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:57:39,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:57:39,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:57:39,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:57:39,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:57:39,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:57:39,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:57:39,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:57:39,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:57:39,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:57:39,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:57:39,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:57:39,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:57:39,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:57:39,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:57:39,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:57:39,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:57:39,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:57:39,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:57:39,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:57:39,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:57:39,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:57:39,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:57:39,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:57:39,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:57:39,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:57:39,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:57:39,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:57:39,103 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:57:39,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:57:39,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:57:39,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:57:39,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:57:39,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:57:39,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:57:39,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:57:39,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:57:39,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:57:39,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:57:39,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:57:39,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:57:39,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:57:39,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:57:39,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:57:39,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:57:39,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:57:39,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:57:39,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:57:39,115 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_bb3c6032-7c85-41ab-aab7-b1611dfa108a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb3f8e38e781ce176014f904e2a60394b3e06270 [2020-12-01 15:57:39,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:57:39,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:57:39,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:57:39,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:57:39,401 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:57:39,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s5iff.c [2020-12-01 15:57:39,495 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/data/427805bcd/6cd04caeba6f48ea9e9e6ff57ee933a2/FLAGaba675361 [2020-12-01 15:57:39,995 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:57:39,995 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/sv-benchmarks/c/array-fpi/s5iff.c [2020-12-01 15:57:40,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/data/427805bcd/6cd04caeba6f48ea9e9e6ff57ee933a2/FLAGaba675361 [2020-12-01 15:57:40,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/data/427805bcd/6cd04caeba6f48ea9e9e6ff57ee933a2 [2020-12-01 15:57:40,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:57:40,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:57:40,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:40,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:57:40,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:57:40,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695d3f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40, skipping insertion in model container [2020-12-01 15:57:40,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:57:40,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:57:40,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:40,646 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:57:40,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:57:40,713 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:57:40,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40 WrapperNode [2020-12-01 15:57:40,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:57:40,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:40,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:57:40,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:57:40,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:57:40,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:57:40,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:57:40,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:57:40,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... [2020-12-01 15:57:40,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:57:40,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:57:40,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:57:40,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:57:40,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/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 15:57:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:57:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:57:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:57:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 15:57:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:57:40,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:57:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:57:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:57:41,268 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:57:41,268 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-01 15:57:41,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:41 BoogieIcfgContainer [2020-12-01 15:57:41,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:57:41,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:57:41,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:57:41,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:57:41,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:57:40" (1/3) ... [2020-12-01 15:57:41,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c94208c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:41, skipping insertion in model container [2020-12-01 15:57:41,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:57:40" (2/3) ... [2020-12-01 15:57:41,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c94208c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:57:41, skipping insertion in model container [2020-12-01 15:57:41,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:41" (3/3) ... [2020-12-01 15:57:41,281 INFO L111 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-12-01 15:57:41,297 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:57:41,301 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:57:41,314 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:57:41,341 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:57:41,341 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:57:41,342 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:57:41,342 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:57:41,342 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:57:41,342 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:57:41,342 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:57:41,342 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:57:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-01 15:57:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:57:41,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:41,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:41,366 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:41,373 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2020-12-01 15:57:41,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:41,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74838093] [2020-12-01 15:57:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:41,653 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 15:57:41,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74838093] [2020-12-01 15:57:41,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:41,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:57:41,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656824075] [2020-12-01 15:57:41,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:57:41,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:41,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:57:41,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:57:41,687 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-01 15:57:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:41,701 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-12-01 15:57:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:57:41,703 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 15:57:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:41,712 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:57:41,713 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 15:57:41,716 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 15:57:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 15:57:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-01 15:57:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-01 15:57:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-01 15:57:41,752 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-12-01 15:57:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:41,752 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-01 15:57:41,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:57:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-01 15:57:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:57:41,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:41,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:41,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:57:41,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2020-12-01 15:57:41,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:41,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819767855] [2020-12-01 15:57:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:57:41,844 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 15:57:41,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819767855] [2020-12-01 15:57:41,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:57:41,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:57:41,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614591306] [2020-12-01 15:57:41,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:57:41,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:57:41,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:57:41,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:57:41,850 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-12-01 15:57:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:57:41,935 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-12-01 15:57:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:57:41,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:57:41,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:57:41,937 INFO L225 Difference]: With dead ends: 28 [2020-12-01 15:57:41,937 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:57:41,938 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 15:57:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:57:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2020-12-01 15:57:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-01 15:57:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-01 15:57:41,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2020-12-01 15:57:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:57:41,951 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-01 15:57:41,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:57:41,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-01 15:57:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:57:41,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:57:41,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:57:41,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:57:41,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:57:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:57:41,957 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2020-12-01 15:57:41,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:57:41,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704348725] [2020-12-01 15:57:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:57:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:42,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:57:42,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:57:42,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:57:42,185 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:57:42,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:57:42,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:57:42 BoogieIcfgContainer [2020-12-01 15:57:42,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:57:42,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:57:42,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:57:42,236 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:57:42,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:57:41" (3/4) ... [2020-12-01 15:57:42,238 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:57:42,288 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bb3c6032-7c85-41ab-aab7-b1611dfa108a/bin/uautomizer/witness.graphml [2020-12-01 15:57:42,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:57:42,291 INFO L168 Benchmark]: Toolchain (without parser) took 1941.57 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 56.9 MB in the beginning and 80.1 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:42,291 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:42,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.83 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 56.7 MB in the beginning and 86.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:42,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.25 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:42,294 INFO L168 Benchmark]: Boogie Preprocessor took 66.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 84.0 MB in the end (delta: 910.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:42,294 INFO L168 Benchmark]: RCFGBuilder took 409.50 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 69.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:42,295 INFO L168 Benchmark]: TraceAbstraction took 962.18 ms. Allocated memory is still 109.1 MB. Free memory was 68.7 MB in the beginning and 83.0 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:57:42,295 INFO L168 Benchmark]: Witness Printer took 53.55 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 80.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:57:42,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.83 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 56.7 MB in the beginning and 86.4 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.25 ms. Allocated memory is still 109.1 MB. Free memory was 86.4 MB in the beginning and 84.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.9 MB in the beginning and 84.0 MB in the end (delta: 910.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.50 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 69.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 962.18 ms. Allocated memory is still 109.1 MB. Free memory was 68.7 MB in the beginning and 83.0 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.55 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 80.1 MB in the end (delta: 2.8 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