./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqmf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqmf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77c3d0fb70413cbc54fe34f29c209fe7f583a4aa .......................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 02:31:42,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:31:42,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:31:42,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:31:42,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:31:42,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:31:42,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:31:42,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:31:42,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:31:42,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:31:42,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:31:42,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:31:42,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:31:42,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:31:42,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:31:42,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:31:42,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:31:42,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:31:43,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:31:43,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:31:43,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:31:43,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:31:43,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:31:43,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:31:43,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:31:43,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:31:43,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:31:43,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:31:43,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:31:43,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:31:43,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:31:43,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:31:43,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:31:43,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:31:43,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:31:43,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:31:43,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:31:43,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:31:43,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:31:43,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:31:43,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:31:43,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 02:31:43,057 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:31:43,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:31:43,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:31:43,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:31:43,069 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:31:43,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:31:43,069 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:31:43,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:31:43,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:31:43,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:31:43,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:31:43,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:31:43,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:31:43,071 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:31:43,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:31:43,071 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:31:43,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:31:43,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:31:43,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:31:43,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:31:43,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:31:43,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:31:43,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:31:43,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:31:43,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:31:43,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:31:43,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:31:43,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:31:43,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a9894446-fa7c-428f-9b63-33a8beb9dbc7/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(__VERIFIER_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 -> 77c3d0fb70413cbc54fe34f29c209fe7f583a4aa [2019-11-20 02:31:43,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:31:43,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:31:43,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:31:43,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:31:43,257 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:31:43,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/../../sv-benchmarks/c/array-fpi/nsqmf.c [2019-11-20 02:31:43,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/data/17ab1b67b/0f53e796528644fb9c750b06081eb8f8/FLAG2db1ae201 [2019-11-20 02:31:43,750 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:31:43,750 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/sv-benchmarks/c/array-fpi/nsqmf.c [2019-11-20 02:31:43,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/data/17ab1b67b/0f53e796528644fb9c750b06081eb8f8/FLAG2db1ae201 [2019-11-20 02:31:43,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/data/17ab1b67b/0f53e796528644fb9c750b06081eb8f8 [2019-11-20 02:31:43,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:31:43,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:31:43,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:31:43,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:31:43,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:31:43,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:31:43" (1/1) ... [2019-11-20 02:31:43,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf41693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:43, skipping insertion in model container [2019-11-20 02:31:43,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:31:43" (1/1) ... [2019-11-20 02:31:43,806 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:31:43,822 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:31:43,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:31:44,042 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:31:44,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:31:44,076 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:31:44,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44 WrapperNode [2019-11-20 02:31:44,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:31:44,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:31:44,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:31:44,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:31:44,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:31:44,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:31:44,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:31:44,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:31:44,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... [2019-11-20 02:31:44,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:31:44,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:31:44,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:31:44,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:31:44,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/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 [2019-11-20 02:31:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 02:31:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 02:31:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:31:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:31:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 02:31:44,524 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:31:44,524 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 02:31:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:31:44 BoogieIcfgContainer [2019-11-20 02:31:44,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:31:44,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:31:44,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:31:44,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:31:44,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:31:43" (1/3) ... [2019-11-20 02:31:44,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27119065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:31:44, skipping insertion in model container [2019-11-20 02:31:44,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:31:44" (2/3) ... [2019-11-20 02:31:44,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27119065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:31:44, skipping insertion in model container [2019-11-20 02:31:44,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:31:44" (3/3) ... [2019-11-20 02:31:44,532 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2019-11-20 02:31:44,541 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:31:44,547 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:31:44,557 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:31:44,577 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:31:44,577 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:31:44,577 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:31:44,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:31:44,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:31:44,577 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:31:44,578 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:31:44,578 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:31:44,590 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-20 02:31:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:31:44,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:31:44,596 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:31:44,597 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:31:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:31:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-20 02:31:44,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:31:44,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091843378] [2019-11-20 02:31:44,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:31:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 02:31:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 02:31:44,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091843378] [2019-11-20 02:31:44,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 02:31:44,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 02:31:44,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052742868] [2019-11-20 02:31:44,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 02:31:44,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 02:31:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 02:31:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 02:31:44,758 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-20 02:31:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 02:31:44,776 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-20 02:31:44,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 02:31:44,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 02:31:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 02:31:44,787 INFO L225 Difference]: With dead ends: 33 [2019-11-20 02:31:44,787 INFO L226 Difference]: Without dead ends: 15 [2019-11-20 02:31:44,790 INFO L630 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 [2019-11-20 02:31:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-20 02:31:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-20 02:31:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 02:31:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 02:31:44,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-20 02:31:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 02:31:44,821 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 02:31:44,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 02:31:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-20 02:31:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 02:31:44,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:31:44,822 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 02:31:44,822 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:31:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:31:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-20 02:31:44,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:31:44,823 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956650791] [2019-11-20 02:31:44,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:31:44,853 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 02:31:44,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490735450] [2019-11-20 02:31:44,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/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 [2019-11-20 02:31:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:31:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:31:44,951 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:31:44,952 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:31:45,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 02:31:45,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:31:45 BoogieIcfgContainer [2019-11-20 02:31:45,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:31:45,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:31:45,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:31:45,191 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:31:45,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:31:44" (3/4) ... [2019-11-20 02:31:45,194 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 02:31:45,241 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a9894446-fa7c-428f-9b63-33a8beb9dbc7/bin/uautomizer/witness.graphml [2019-11-20 02:31:45,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:31:45,243 INFO L168 Benchmark]: Toolchain (without parser) took 1462.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:31:45,244 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:31:45,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -222.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 02:31:45,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:31:45,246 INFO L168 Benchmark]: Boogie Preprocessor took 22.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:31:45,247 INFO L168 Benchmark]: RCFGBuilder took 387.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:31:45,247 INFO L168 Benchmark]: TraceAbstraction took 663.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:31:45,248 INFO L168 Benchmark]: Witness Printer took 50.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:31:45,251 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -222.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 387.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 663.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 11.5 GB. * Witness Printer took 50.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 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: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L26] b[0] = 1 [L27] a[0] = 1 [L29] i=1 VAL [N=1] [L29] COND FALSE !(i