./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms4f.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_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ms4f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/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 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 ...................................................................................................................................................................................................................................................................................................................................................................... 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 08:49:48,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:48,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:48,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:48,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:48,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:48,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:48,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:48,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:48,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:48,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:48,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:48,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:48,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:48,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:48,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:48,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:48,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:48,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:48,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:48,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:48,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:48,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:48,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:48,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:48,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:48,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:48,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:48,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:48,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:48,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:48,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:48,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:48,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:48,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:48,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:48,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:48,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:48,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:48,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:48,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:48,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:48,152 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:48,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:48,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:48,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:48,163 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:48,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:48,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:48,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:48,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:48,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:48,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:48,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:48,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:48,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:48,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:48,166 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:48,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:48,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:48,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:48,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:48,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:48,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:48,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:48,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:48,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:48,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:48,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:48,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:48,170 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_7ee224e0-86d7-4021-ae38-326ac8d7de50/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 -> 8b1ff7c3d7f3c8cf245efdfe656c26c90ac88f02 [2019-11-25 08:49:48,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:48,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:48,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:48,352 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:48,352 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:48,353 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ms4f.c [2019-11-25 08:49:48,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/data/3f9218961/b365922d07374b32b8e31e40c061b0b7/FLAG45fbad455 [2019-11-25 08:49:48,787 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:48,788 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/sv-benchmarks/c/array-fpi/ms4f.c [2019-11-25 08:49:48,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/data/3f9218961/b365922d07374b32b8e31e40c061b0b7/FLAG45fbad455 [2019-11-25 08:49:49,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/data/3f9218961/b365922d07374b32b8e31e40c061b0b7 [2019-11-25 08:49:49,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:49,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:49,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:49,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:49,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:49,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f7b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49, skipping insertion in model container [2019-11-25 08:49:49,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:49,249 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:49,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:49,522 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:49,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:49,552 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:49,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49 WrapperNode [2019-11-25 08:49:49,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:49,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:49,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:49,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:49,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:49,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:49,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:49,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:49,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... [2019-11-25 08:49:49,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:49,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:49,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:49,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:49,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/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 08:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:49,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:49,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:49:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:49,898 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:49,899 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:49:49,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49 BoogieIcfgContainer [2019-11-25 08:49:49,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:49,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:49,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:49,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:49,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:49" (1/3) ... [2019-11-25 08:49:49,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da36e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:49, skipping insertion in model container [2019-11-25 08:49:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:49" (2/3) ... [2019-11-25 08:49:49,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da36e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:49, skipping insertion in model container [2019-11-25 08:49:49,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49" (3/3) ... [2019-11-25 08:49:49,919 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2019-11-25 08:49:49,927 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:49,942 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:49:49,967 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:49:50,008 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:50,008 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:50,008 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:50,008 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:50,008 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:50,008 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:50,009 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:50,009 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:50,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-25 08:49:50,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:49:50,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,041 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:50,041 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-25 08:49:50,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182272389] [2019-11-25 08:49:50,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:50,182 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 08:49:50,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182272389] [2019-11-25 08:49:50,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:50,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:49:50,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670867105] [2019-11-25 08:49:50,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:49:50,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:50,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:49:50,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:49:50,199 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-25 08:49:50,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:50,212 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-25 08:49:50,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:49:50,214 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-25 08:49:50,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:50,221 INFO L225 Difference]: With dead ends: 29 [2019-11-25 08:49:50,221 INFO L226 Difference]: Without dead ends: 13 [2019-11-25 08:49:50,224 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 08:49:50,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-25 08:49:50,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-25 08:49:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:49:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-25 08:49:50,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-25 08:49:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:50,254 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-25 08:49:50,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:49:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-25 08:49:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:49:50,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:50,256 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-25 08:49:50,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898080228] [2019-11-25 08:49:50,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:50,310 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 08:49:50,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898080228] [2019-11-25 08:49:50,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:50,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:49:50,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138335024] [2019-11-25 08:49:50,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:49:50,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:49:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:50,312 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-25 08:49:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:50,367 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-25 08:49:50,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:50,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-25 08:49:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:50,368 INFO L225 Difference]: With dead ends: 23 [2019-11-25 08:49:50,368 INFO L226 Difference]: Without dead ends: 15 [2019-11-25 08:49:50,369 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 08:49:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-25 08:49:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-25 08:49:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-25 08:49:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-25 08:49:50,373 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-25 08:49:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:50,373 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-25 08:49:50,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:49:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-25 08:49:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:49:50,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,374 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:50,375 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-25 08:49:50,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015772067] [2019-11-25 08:49:50,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:50,440 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 08:49:50,440 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015772067] [2019-11-25 08:49:50,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:50,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:49:50,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671370435] [2019-11-25 08:49:50,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:49:50,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:50,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:49:50,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:49:50,443 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-25 08:49:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:50,494 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-25 08:49:50,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:49:50,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:49:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:50,496 INFO L225 Difference]: With dead ends: 25 [2019-11-25 08:49:50,496 INFO L226 Difference]: Without dead ends: 18 [2019-11-25 08:49:50,497 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 08:49:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-25 08:49:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-25 08:49:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-25 08:49:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-25 08:49:50,501 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2019-11-25 08:49:50,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:50,501 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-25 08:49:50,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:49:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-25 08:49:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:49:50,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:50,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:50,502 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-25 08:49:50,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:50,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800538304] [2019-11-25 08:49:50,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:50,609 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:50,609 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:50,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:50 BoogieIcfgContainer [2019-11-25 08:49:50,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:50,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:50,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:50,634 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:50,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:49" (3/4) ... [2019-11-25 08:49:50,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:50,676 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7ee224e0-86d7-4021-ae38-326ac8d7de50/bin/uautomizer/witness.graphml [2019-11-25 08:49:50,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:50,678 INFO L168 Benchmark]: Toolchain (without parser) took 1472.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 951.5 MB in the beginning and 1.0 GB in the end (delta: -82.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:50,679 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:50,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -148.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:50,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:50,680 INFO L168 Benchmark]: Boogie Preprocessor took 20.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:50,681 INFO L168 Benchmark]: RCFGBuilder took 290.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:50,682 INFO L168 Benchmark]: TraceAbstraction took 732.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:50,682 INFO L168 Benchmark]: Witness Printer took 43.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:50,686 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 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 347.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -148.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 290.75 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 732.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 43.07 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 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 sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i