./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs5f.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_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/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 3c634baad78572eed4cece62ab3fbed72feb7f15 ........................................................................................................................................................................................................................................................................................................................................................................ 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 07:56:46,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:56:46,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:56:46,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:56:46,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:56:46,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:56:46,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:56:46,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:56:46,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:56:46,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:56:46,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:56:46,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:56:46,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:56:46,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:56:46,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:56:46,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:56:46,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:56:46,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:56:46,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:56:46,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:56:46,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:56:46,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:56:46,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:56:46,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:56:46,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:56:46,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:56:46,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:56:46,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:56:46,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:56:46,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:56:46,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:56:46,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:56:46,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:56:46,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:56:46,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:56:46,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:56:46,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:56:46,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:56:46,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:56:46,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:56:46,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:56:46,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 07:56:46,655 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:56:46,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:56:46,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:56:46,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:56:46,669 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:56:46,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:56:46,670 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 07:56:46,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:56:46,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 07:56:46,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:56:46,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 07:56:46,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:56:46,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 07:56:46,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 07:56:46,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 07:56:46,672 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:56:46,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 07:56:46,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:56:46,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:56:46,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:56:46,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:56:46,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:56:46,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:56:46,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:56:46,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 07:56:46,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 07:56:46,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 07:56:46,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 07:56:46,675 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_73895675-f110-42b4-a05c-8102eac5edc6/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 -> 3c634baad78572eed4cece62ab3fbed72feb7f15 [2019-11-20 07:56:46,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:56:46,856 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:56:46,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:56:46,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:56:46,862 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:56:46,863 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs5f.c [2019-11-20 07:56:46,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/data/8270a5365/5bcdf018c0cf49cd8464dafae07352a1/FLAGcaf38eafc [2019-11-20 07:56:47,443 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:56:47,443 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/sv-benchmarks/c/array-fpi/brs5f.c [2019-11-20 07:56:47,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/data/8270a5365/5bcdf018c0cf49cd8464dafae07352a1/FLAGcaf38eafc [2019-11-20 07:56:47,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/data/8270a5365/5bcdf018c0cf49cd8464dafae07352a1 [2019-11-20 07:56:47,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:56:47,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 07:56:47,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:56:47,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:56:47,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:56:47,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:47" (1/1) ... [2019-11-20 07:56:47,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0f4ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:47, skipping insertion in model container [2019-11-20 07:56:47,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:47" (1/1) ... [2019-11-20 07:56:47,804 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:56:47,825 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:56:48,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:56:48,072 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:56:48,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:56:48,188 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:56:48,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48 WrapperNode [2019-11-20 07:56:48,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:56:48,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 07:56:48,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 07:56:48,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 07:56:48,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 07:56:48,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:56:48,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:56:48,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:56:48,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... [2019-11-20 07:56:48,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:56:48,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:56:48,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:56:48,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:56:48,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/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 07:56:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 07:56:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 07:56:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 07:56:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:56:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:56:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 07:56:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 07:56:48,780 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:56:48,780 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 07:56:48,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:48 BoogieIcfgContainer [2019-11-20 07:56:48,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:56:48,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:56:48,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:56:48,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:56:48,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:56:47" (1/3) ... [2019-11-20 07:56:48,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6665c77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:48, skipping insertion in model container [2019-11-20 07:56:48,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:48" (2/3) ... [2019-11-20 07:56:48,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6665c77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:48, skipping insertion in model container [2019-11-20 07:56:48,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:48" (3/3) ... [2019-11-20 07:56:48,792 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2019-11-20 07:56:48,803 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:56:48,811 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 07:56:48,825 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 07:56:48,859 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:56:48,859 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 07:56:48,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:56:48,860 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:56:48,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:56:48,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:56:48,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:56:48,861 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:56:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-20 07:56:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:56:48,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:48,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:56:48,893 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:56:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1623807605, now seen corresponding path program 1 times [2019-11-20 07:56:48,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:48,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542466666] [2019-11-20 07:56:48,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:49,099 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 07:56:49,101 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542466666] [2019-11-20 07:56:49,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:49,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 07:56:49,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054538656] [2019-11-20 07:56:49,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 07:56:49,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:49,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 07:56:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:56:49,123 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-11-20 07:56:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:49,138 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2019-11-20 07:56:49,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 07:56:49,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 07:56:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:49,150 INFO L225 Difference]: With dead ends: 30 [2019-11-20 07:56:49,151 INFO L226 Difference]: Without dead ends: 14 [2019-11-20 07:56:49,154 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 07:56:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-20 07:56:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 07:56:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 07:56:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-20 07:56:49,190 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2019-11-20 07:56:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:49,190 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-20 07:56:49,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 07:56:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2019-11-20 07:56:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:56:49,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:49,192 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:56:49,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:56:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:49,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1308886944, now seen corresponding path program 1 times [2019-11-20 07:56:49,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:49,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958071470] [2019-11-20 07:56:49,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:49,266 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 07:56:49,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958071470] [2019-11-20 07:56:49,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:49,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 07:56:49,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900200097] [2019-11-20 07:56:49,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:56:49,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:49,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:56:49,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:56:49,270 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2019-11-20 07:56:49,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:49,357 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2019-11-20 07:56:49,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:56:49,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 07:56:49,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:49,359 INFO L225 Difference]: With dead ends: 28 [2019-11-20 07:56:49,359 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 07:56:49,360 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 [2019-11-20 07:56:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 07:56:49,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-20 07:56:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 07:56:49,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-11-20 07:56:49,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2019-11-20 07:56:49,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:49,365 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-11-20 07:56:49,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:56:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-11-20 07:56:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 07:56:49,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:49,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:56:49,367 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:56:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1738269227, now seen corresponding path program 1 times [2019-11-20 07:56:49,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:49,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866812761] [2019-11-20 07:56:49,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:56:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 07:56:49,467 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866812761] [2019-11-20 07:56:49,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:56:49,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 07:56:49,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374229288] [2019-11-20 07:56:49,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:56:49,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:56:49,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:56:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:56:49,470 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-11-20 07:56:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:56:49,563 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2019-11-20 07:56:49,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 07:56:49,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-20 07:56:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:56:49,566 INFO L225 Difference]: With dead ends: 27 [2019-11-20 07:56:49,566 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 07:56:49,567 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 [2019-11-20 07:56:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 07:56:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 07:56:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 07:56:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-20 07:56:49,570 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2019-11-20 07:56:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:56:49,571 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-20 07:56:49,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:56:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-20 07:56:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 07:56:49,572 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:56:49,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:56:49,572 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:56:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:56:49,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1896871737, now seen corresponding path program 1 times [2019-11-20 07:56:49,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:56:49,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873529810] [2019-11-20 07:56:49,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:56:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:56:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:56:49,671 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:56:49,672 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 07:56:49,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:56:49 BoogieIcfgContainer [2019-11-20 07:56:49,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 07:56:49,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:56:49,703 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:56:49,703 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:56:49,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:48" (3/4) ... [2019-11-20 07:56:49,706 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 07:56:49,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73895675-f110-42b4-a05c-8102eac5edc6/bin/uautomizer/witness.graphml [2019-11-20 07:56:49,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:56:49,766 INFO L168 Benchmark]: Toolchain (without parser) took 1981.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -103.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:49,766 INFO L168 Benchmark]: CDTParser took 0.29 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 07:56:49,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:49,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.27 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 07:56:49,768 INFO L168 Benchmark]: Boogie Preprocessor took 51.06 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. [2019-11-20 07:56:49,769 INFO L168 Benchmark]: RCFGBuilder took 495.78 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. [2019-11-20 07:56:49,770 INFO L168 Benchmark]: TraceAbstraction took 919.38 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-11-20 07:56:49,770 INFO L168 Benchmark]: Witness Printer took 60.17 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 07:56:49,774 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 403.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.27 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 51.06 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 495.78 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 919.38 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 60.17 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 sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i