./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/modnf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/modnf.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/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 3fd3ccab48e72f12ae121d44bf0e0da956d21d01 ............................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-25 08:53:56,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:56,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:56,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:56,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:56,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:56,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:56,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:56,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:56,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:56,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:56,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:56,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:56,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:56,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:56,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:56,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:56,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:56,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:56,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:56,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:56,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:56,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:56,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:56,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:56,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:56,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:56,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:56,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:56,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:56,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:56,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:56,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:56,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:56,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:56,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:56,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:56,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:56,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:56,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:56,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:56,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:53:56,284 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:56,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:56,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:56,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:56,285 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:56,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:56,286 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:56,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:56,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:56,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:56,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:53:56,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:56,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:53:56,288 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:56,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:53:56,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:56,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:53:56,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:56,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:56,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:56,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:56,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:56,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:56,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:56,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:53:56,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:53:56,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:53:56,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:53:56,291 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_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/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 -> 3fd3ccab48e72f12ae121d44bf0e0da956d21d01 [2019-11-25 08:53:56,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:56,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:56,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:56,483 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:56,484 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:56,484 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/../../sv-benchmarks/c/array-fpi/modnf.c [2019-11-25 08:53:56,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/data/0c72b6021/f1e283519bee42d9b234c4eae473db78/FLAGebb8d34d7 [2019-11-25 08:53:56,945 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:56,946 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/sv-benchmarks/c/array-fpi/modnf.c [2019-11-25 08:53:56,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/data/0c72b6021/f1e283519bee42d9b234c4eae473db78/FLAGebb8d34d7 [2019-11-25 08:53:56,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/data/0c72b6021/f1e283519bee42d9b234c4eae473db78 [2019-11-25 08:53:56,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:56,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:53:56,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:56,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:56,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:56,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:56" (1/1) ... [2019-11-25 08:53:56,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6f6dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:56, skipping insertion in model container [2019-11-25 08:53:56,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:56" (1/1) ... [2019-11-25 08:53:56,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:57,009 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:57,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:57,248 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:57,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:57,294 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:57,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57 WrapperNode [2019-11-25 08:53:57,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:57,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:57,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:53:57,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:53:57,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:53:57,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:57,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:57,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:57,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... [2019-11-25 08:53:57,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:57,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:57,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:57,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:57,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/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 [2019-11-25 08:53:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:53:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:53:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:53:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:57,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:53:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:53:57,684 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:57,685 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-25 08:53:57,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:57 BoogieIcfgContainer [2019-11-25 08:53:57,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:57,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:57,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:57,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:57,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:56" (1/3) ... [2019-11-25 08:53:57,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d021b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:57, skipping insertion in model container [2019-11-25 08:53:57,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:57" (2/3) ... [2019-11-25 08:53:57,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d021b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:57, skipping insertion in model container [2019-11-25 08:53:57,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:57" (3/3) ... [2019-11-25 08:53:57,693 INFO L109 eAbstractionObserver]: Analyzing ICFG modnf.c [2019-11-25 08:53:57,701 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:57,707 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:53:57,716 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:53:57,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:57,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:53:57,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:57,750 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:57,751 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:57,751 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:57,751 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:57,751 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-25 08:53:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:53:57,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:57,780 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:57,781 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:57,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1486647931, now seen corresponding path program 1 times [2019-11-25 08:53:57,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:57,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487215052] [2019-11-25 08:53:57,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:57,910 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487215052] [2019-11-25 08:53:57,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:57,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:53:57,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504886763] [2019-11-25 08:53:57,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:53:57,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:57,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:53:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:53:57,925 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-25 08:53:57,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:57,938 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2019-11-25 08:53:57,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:53:57,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-25 08:53:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:57,946 INFO L225 Difference]: With dead ends: 33 [2019-11-25 08:53:57,946 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:53:57,949 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 [2019-11-25 08:53:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:53:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-25 08:53:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:53:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-25 08:53:57,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2019-11-25 08:53:57,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:57,978 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-25 08:53:57,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:53:57,978 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-25 08:53:57,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-25 08:53:57,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:57,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:57,979 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1772723449, now seen corresponding path program 1 times [2019-11-25 08:53:57,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:57,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856638745] [2019-11-25 08:53:57,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:58,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856638745] [2019-11-25 08:53:58,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:58,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:53:58,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470139766] [2019-11-25 08:53:58,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:53:58,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:58,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:53:58,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:53:58,045 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2019-11-25 08:53:58,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:58,087 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-25 08:53:58,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:53:58,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-25 08:53:58,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:58,088 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:53:58,088 INFO L226 Difference]: Without dead ends: 17 [2019-11-25 08:53:58,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:53:58,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-25 08:53:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-25 08:53:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:53:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-25 08:53:58,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-11-25 08:53:58,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:58,093 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-25 08:53:58,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:53:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-25 08:53:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:53:58,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:58,094 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:58,094 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:58,095 INFO L82 PathProgramCache]: Analyzing trace with hash 827904471, now seen corresponding path program 1 times [2019-11-25 08:53:58,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:58,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126109818] [2019-11-25 08:53:58,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:53:58,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126109818] [2019-11-25 08:53:58,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:58,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:53:58,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040399787] [2019-11-25 08:53:58,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:53:58,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:58,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:53:58,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:58,149 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2019-11-25 08:53:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:58,217 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-11-25 08:53:58,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:53:58,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-25 08:53:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:58,218 INFO L225 Difference]: With dead ends: 32 [2019-11-25 08:53:58,219 INFO L226 Difference]: Without dead ends: 25 [2019-11-25 08:53:58,219 INFO L630 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 [2019-11-25 08:53:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-25 08:53:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2019-11-25 08:53:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:53:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-25 08:53:58,223 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2019-11-25 08:53:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:58,224 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-25 08:53:58,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:53:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-25 08:53:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:53:58,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:58,225 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:58,225 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:53:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1602337035, now seen corresponding path program 1 times [2019-11-25 08:53:58,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:58,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94021171] [2019-11-25 08:53:58,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:58,239 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-25 08:53:58,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [902663176] [2019-11-25 08:53:58,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/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 [2019-11-25 08:53:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:58,352 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:58,352 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:53:58,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:58,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:53:58 BoogieIcfgContainer [2019-11-25 08:53:58,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:53:58,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:58,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:58,583 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:58,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:57" (3/4) ... [2019-11-25 08:53:58,585 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:53:58,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e57698f-c47d-4bd8-a72c-aeb2e59eae51/bin/uautomizer/witness.graphml [2019-11-25 08:53:58,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:58,625 INFO L168 Benchmark]: Toolchain (without parser) took 1653.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -101.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:58,625 INFO L168 Benchmark]: CDTParser took 0.21 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. [2019-11-25 08:53:58,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:58,626 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.85 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. [2019-11-25 08:53:58,626 INFO L168 Benchmark]: Boogie Preprocessor took 44.06 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. [2019-11-25 08:53:58,627 INFO L168 Benchmark]: RCFGBuilder took 302.92 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:58,627 INFO L168 Benchmark]: TraceAbstraction took 895.18 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:58,628 INFO L168 Benchmark]: Witness Printer took 40.74 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. [2019-11-25 08:53:58,630 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 321.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -177.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.85 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. * Boogie Preprocessor took 44.06 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. * RCFGBuilder took 302.92 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 895.18 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.74 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] int sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 0 [L27] i=0 VAL [N=1] [L27] COND TRUE i