./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss3f.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_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss3f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/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 248b2d90a91115122eed8c2bc3ad2e8879fe9067 ................................................................................................................................................................................................................................................................................................................................................................................... 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 16:03:55,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:03:55,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:03:55,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:03:55,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:03:55,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:03:55,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:03:55,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:03:55,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:03:55,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:03:55,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:03:55,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:03:55,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:03:55,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:03:55,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:03:55,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:03:55,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:03:55,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:03:55,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:03:55,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:03:55,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:03:55,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:03:55,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:03:55,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:03:55,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:03:55,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:03:55,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:03:55,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:03:55,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:03:55,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:03:55,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:03:55,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:03:55,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:03:55,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:03:55,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:03:55,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:03:55,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:03:55,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:03:55,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:03:55,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:03:55,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:03:55,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 16:03:55,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:03:55,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:03:55,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:03:55,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:03:55,495 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 16:03:55,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:03:55,495 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:03:55,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:03:55,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:03:55,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:03:55,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:03:55,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:03:55,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:03:55,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:03:55,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:03:55,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:03:55,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:03:55,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:03:55,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 16:03:55,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:03:55,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 16:03:55,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 16:03:55,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:03:55,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:03:55,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:03:55,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 16:03:55,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:03:55,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:03:55,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 16:03:55,500 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_174e19d4-86d4-4067-84e4-eab653598ec4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 248b2d90a91115122eed8c2bc3ad2e8879fe9067 [2020-12-01 16:03:55,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:03:55,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:03:55,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:03:55,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:03:55,798 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:03:55,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ss3f.c [2020-12-01 16:03:55,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/data/5c65d6c22/9ae1c488a59647e78e7d30ba504a8635/FLAGc70d1e7e7 [2020-12-01 16:03:56,351 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:03:56,352 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/sv-benchmarks/c/array-fpi/ss3f.c [2020-12-01 16:03:56,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/data/5c65d6c22/9ae1c488a59647e78e7d30ba504a8635/FLAGc70d1e7e7 [2020-12-01 16:03:56,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/data/5c65d6c22/9ae1c488a59647e78e7d30ba504a8635 [2020-12-01 16:03:56,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:03:56,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:03:56,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:56,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:03:56,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:03:56,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:56" (1/1) ... [2020-12-01 16:03:56,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708ec438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:56, skipping insertion in model container [2020-12-01 16:03:56,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:03:56" (1/1) ... [2020-12-01 16:03:56,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:03:56,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:03:57,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:57,051 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:03:57,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:03:57,094 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:03:57,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57 WrapperNode [2020-12-01 16:03:57,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:03:57,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:57,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:03:57,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:03:57,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:03:57,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:03:57,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:03:57,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:03:57,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... [2020-12-01 16:03:57,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:03:57,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:03:57,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:03:57,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:03:57,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/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 16:03:57,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:03:57,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:03:57,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:03:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:03:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:03:57,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:03:57,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:03:57,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:03:57,736 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:03:57,737 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-01 16:03:57,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:57 BoogieIcfgContainer [2020-12-01 16:03:57,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:03:57,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 16:03:57,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 16:03:57,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 16:03:57,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:03:56" (1/3) ... [2020-12-01 16:03:57,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1177fa4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:57, skipping insertion in model container [2020-12-01 16:03:57,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:03:57" (2/3) ... [2020-12-01 16:03:57,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1177fa4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:03:57, skipping insertion in model container [2020-12-01 16:03:57,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:57" (3/3) ... [2020-12-01 16:03:57,750 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-12-01 16:03:57,767 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 16:03:57,770 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 16:03:57,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 16:03:57,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 16:03:57,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 16:03:57,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 16:03:57,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 16:03:57,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 16:03:57,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 16:03:57,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 16:03:57,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 16:03:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-01 16:03:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:03:57,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:57,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:57,835 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2020-12-01 16:03:57,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:57,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410414995] [2020-12-01 16:03:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:58,043 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 16:03:58,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410414995] [2020-12-01 16:03:58,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:58,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 16:03:58,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589195837] [2020-12-01 16:03:58,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 16:03:58,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:58,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 16:03:58,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 16:03:58,076 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-01 16:03:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:58,102 INFO L93 Difference]: Finished difference Result 51 states and 73 transitions. [2020-12-01 16:03:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 16:03:58,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-01 16:03:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:58,113 INFO L225 Difference]: With dead ends: 51 [2020-12-01 16:03:58,114 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 16:03:58,128 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 16:03:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 16:03:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-01 16:03:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 16:03:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-01 16:03:58,165 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2020-12-01 16:03:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:58,165 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-01 16:03:58,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 16:03:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-01 16:03:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 16:03:58,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:58,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 16:03:58,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 16:03:58,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:58,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:58,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2020-12-01 16:03:58,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:58,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132160400] [2020-12-01 16:03:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:03:58,363 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 16:03:58,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132160400] [2020-12-01 16:03:58,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 16:03:58,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 16:03:58,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225273037] [2020-12-01 16:03:58,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 16:03:58,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 16:03:58,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 16:03:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 16:03:58,371 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-01 16:03:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 16:03:58,514 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2020-12-01 16:03:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 16:03:58,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 16:03:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 16:03:58,517 INFO L225 Difference]: With dead ends: 49 [2020-12-01 16:03:58,517 INFO L226 Difference]: Without dead ends: 33 [2020-12-01 16:03:58,519 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 16:03:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-01 16:03:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-12-01 16:03:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-01 16:03:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-01 16:03:58,536 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-12-01 16:03:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 16:03:58,537 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-01 16:03:58,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 16:03:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-01 16:03:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 16:03:58,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 16:03:58,541 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, 1, 1, 1, 1] [2020-12-01 16:03:58,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 16:03:58,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 16:03:58,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:03:58,545 INFO L82 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2020-12-01 16:03:58,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 16:03:58,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236525624] [2020-12-01 16:03:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 16:03:58,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 16:03:58,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247783282] [2020-12-01 16:03:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 16:03:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:03:58,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:03:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:03:58,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:03:58,833 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 16:03:58,834 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 16:03:59,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 16:03:59,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:03:59 BoogieIcfgContainer [2020-12-01 16:03:59,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 16:03:59,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:03:59,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:03:59,081 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:03:59,081 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:03:57" (3/4) ... [2020-12-01 16:03:59,084 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:03:59,154 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_174e19d4-86d4-4067-84e4-eab653598ec4/bin/uautomizer/witness.graphml [2020-12-01 16:03:59,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:03:59,157 INFO L168 Benchmark]: Toolchain (without parser) took 2403.29 ms. Allocated memory is still 113.2 MB. Free memory was 84.0 MB in the beginning and 56.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,157 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 38.6 MB in the beginning and 38.5 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:03:59,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.87 ms. Allocated memory is still 113.2 MB. Free memory was 84.0 MB in the beginning and 91.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.74 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,159 INFO L168 Benchmark]: Boogie Preprocessor took 60.05 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,160 INFO L168 Benchmark]: RCFGBuilder took 494.65 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 71.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,161 INFO L168 Benchmark]: TraceAbstraction took 1338.89 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 59.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,162 INFO L168 Benchmark]: Witness Printer took 74.43 ms. Allocated memory is still 113.2 MB. Free memory was 59.4 MB in the beginning and 56.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:03:59,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 38.6 MB in the beginning and 38.5 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.87 ms. Allocated memory is still 113.2 MB. Free memory was 84.0 MB in the beginning and 91.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.74 ms. Allocated memory is still 113.2 MB. Free memory was 90.6 MB in the beginning and 88.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.05 ms. Allocated memory is still 113.2 MB. Free memory was 88.9 MB in the beginning and 87.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 494.65 ms. Allocated memory is still 113.2 MB. Free memory was 87.8 MB in the beginning and 71.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1338.89 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 59.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.43 ms. Allocated memory is still 113.2 MB. Free memory was 59.4 MB in the beginning and 56.4 MB in the end (delta: 2.9 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i