./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:26:54,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:54,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:54,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:54,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:54,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:54,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:54,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:54,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:54,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:54,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:54,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:54,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:54,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:54,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:54,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:54,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:54,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:54,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:54,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:54,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:54,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:54,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:54,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:54,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:54,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:54,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:54,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:54,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:54,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:54,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:54,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:54,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:54,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:54,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:54,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:54,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:54,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:54,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:54,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:54,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:54,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:54,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:54,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:54,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:54,986 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:54,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:54,987 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:54,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:54,988 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:54,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:54,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:54,988 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:54,989 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:54,989 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:54,989 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:54,989 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:54,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:54,990 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:54,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:54,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:54,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:54,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:54,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:54,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:54,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:54,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:54,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:54,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:54,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:54,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:54,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:54,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:54,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:54,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:54,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:54,995 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:54,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:54,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:54,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:54,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:54,996 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebb9b7e62b5fc3108854fe0ad79e9ef5b6cd643 [2021-10-11 02:26:55,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:55,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:55,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:55,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:55,290 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:55,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-10-11 02:26:55,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/data/ad321b236/181d3f64b7b44aa4ac991b87c3af2c96/FLAGbf3b8761d [2021-10-11 02:26:55,821 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:55,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/sv-benchmarks/c/array-fpi/ifeqn4f.c [2021-10-11 02:26:55,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/data/ad321b236/181d3f64b7b44aa4ac991b87c3af2c96/FLAGbf3b8761d [2021-10-11 02:26:56,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/data/ad321b236/181d3f64b7b44aa4ac991b87c3af2c96 [2021-10-11 02:26:56,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:56,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:56,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:56,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:56,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:56,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbaf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56, skipping insertion in model container [2021-10-11 02:26:56,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:56,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:56,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/sv-benchmarks/c/array-fpi/ifeqn4f.c[590,603] [2021-10-11 02:26:56,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:56,436 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:56,447 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/sv-benchmarks/c/array-fpi/ifeqn4f.c[590,603] [2021-10-11 02:26:56,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:56,470 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:56,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56 WrapperNode [2021-10-11 02:26:56,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:56,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:56,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:56,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:56,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:56,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:56,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:56,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:56,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... [2021-10-11 02:26:56,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:56,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:56,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:56,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:56,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:26:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:26:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:26:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:56,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:26:57,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:57,111 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:26:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:57 BoogieIcfgContainer [2021-10-11 02:26:57,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:57,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:57,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:57,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:57,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:56" (1/3) ... [2021-10-11 02:26:57,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eecb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:57, skipping insertion in model container [2021-10-11 02:26:57,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:56" (2/3) ... [2021-10-11 02:26:57,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eecb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:57, skipping insertion in model container [2021-10-11 02:26:57,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:57" (3/3) ... [2021-10-11 02:26:57,135 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2021-10-11 02:26:57,162 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:57,165 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:57,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:57,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:57,202 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:57,202 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:57,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:57,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:57,202 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:57,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:57,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:26:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:26:57,220 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:57,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:57,221 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1758921741, now seen corresponding path program 1 times [2021-10-11 02:26:57,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:57,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515094242] [2021-10-11 02:26:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:57,349 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:57,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [404017073] [2021-10-11 02:26:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:26:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:57,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:57,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:57,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:57,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515094242] [2021-10-11 02:26:57,605 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:57,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404017073] [2021-10-11 02:26:57,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:57,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:26:57,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532750653] [2021-10-11 02:26:57,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:57,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:57,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:57,629 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2021-10-11 02:26:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:57,672 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-11 02:26:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:57,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:26:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:57,682 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:26:57,682 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:26:57,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:26:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:26:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:26:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:26:57,716 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-10-11 02:26:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:57,716 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:26:57,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:26:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:26:57,717 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:57,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:57,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:26:57,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1256161657, now seen corresponding path program 1 times [2021-10-11 02:26:57,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:57,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854571294] [2021-10-11 02:26:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:57,961 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:57,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062867854] [2021-10-11 02:26:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:58,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:26:58,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:58,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:58,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854571294] [2021-10-11 02:26:58,128 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:58,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062867854] [2021-10-11 02:26:58,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:58,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-11 02:26:58,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805078016] [2021-10-11 02:26:58,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:58,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:58,133 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2021-10-11 02:26:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:58,174 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 02:26:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:58,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:26:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:58,176 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:26:58,176 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:26:58,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:26:58,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-10-11 02:26:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:26:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-11 02:26:58,181 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-11 02:26:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:58,181 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-11 02:26:58,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-11 02:26:58,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:58,182 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:58,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:58,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:58,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 285260138, now seen corresponding path program 1 times [2021-10-11 02:26:58,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:58,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883503825] [2021-10-11 02:26:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:58,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:58,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363748177] [2021-10-11 02:26:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:58,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:26:58,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:58,655 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:26:58,656 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:26:58,658 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:26:58,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:26:58,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-10-11 02:26:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:58,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:58,741 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:58,762 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:26:58,762 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-10-11 02:26:58,765 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:26:58,772 INFO L443 ElimStorePlain]: Different costs {0=[v_arrayElimCell_2], 2=[v_arrayElimCell_1]} [2021-10-11 02:26:58,789 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~a~0.base Int) (ULTIMATE.start_main_~b~0.base Int) (|#memory_int| (Array Int (Array Int Int))) (ULTIMATE.start_main_~a~0.offset Int) (ULTIMATE.start_main_~b~0.offset Int)) (= (select (let ((.cse0 (select |#memory_int| ULTIMATE.start_main_~b~0.base)) (.cse1 (* c_ULTIMATE.start_main_~i~0 8))) (store .cse0 (+ .cse1 ULTIMATE.start_main_~b~0.offset) (+ (select (select |#memory_int| ULTIMATE.start_main_~a~0.base) (+ ULTIMATE.start_main_~a~0.offset .cse1 (- 8))) (select .cse0 (+ .cse1 ULTIMATE.start_main_~b~0.offset (- 8)))))) ULTIMATE.start_main_~b~0.offset) 1)) (= c_ULTIMATE.start_main_~i~0 0)) is different from false [2021-10-11 02:26:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2021-10-11 02:26:58,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883503825] [2021-10-11 02:26:58,813 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:58,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363748177] [2021-10-11 02:26:58,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949742959] [2021-10-11 02:26:58,846 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-11 02:26:58,846 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:26:58,854 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:26:58,868 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:26:58,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:26:59,133 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:26:59,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:00,054 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:00,248 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:00,444 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-10-11 02:27:00,621 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-10-11 02:27:00,842 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-10-11 02:27:01,117 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-10-11 02:27:01,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:01,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:01,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2021-10-11 02:27:01,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357573631] [2021-10-11 02:27:01,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:27:01,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:01,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:27:01,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=164, Unknown=1, NotChecked=26, Total=240 [2021-10-11 02:27:01,121 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 11 states. [2021-10-11 02:27:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:01,451 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-10-11 02:27:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:27:01,452 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2021-10-11 02:27:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:01,454 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:27:01,454 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:27:01,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=429, Unknown=1, NotChecked=44, Total=600 [2021-10-11 02:27:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:27:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2021-10-11 02:27:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:27:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-11 02:27:01,464 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-10-11 02:27:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:01,465 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-11 02:27:01,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:27:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-11 02:27:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:01,465 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:01,466 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:01,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:01,680 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:01,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1550353687, now seen corresponding path program 1 times [2021-10-11 02:27:01,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:01,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723369063] [2021-10-11 02:27:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:01,696 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:01,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570272742] [2021-10-11 02:27:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:01,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:01,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:01,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:27:01,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723369063] [2021-10-11 02:27:01,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:01,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570272742] [2021-10-11 02:27:01,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1097651611] [2021-10-11 02:27:01,841 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:27:01,841 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:01,842 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:01,842 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:01,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:01,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:02,291 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:02,699 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:27:02,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:03,140 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-10-11 02:27:03,299 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2021-10-11 02:27:03,499 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2021-10-11 02:27:03,810 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-10-11 02:27:04,099 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-10-11 02:27:04,100 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:04,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:27:04,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-11 02:27:04,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896153634] [2021-10-11 02:27:04,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:27:04,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:27:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:04,104 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 9 states. [2021-10-11 02:27:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:04,208 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-10-11 02:27:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:04,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2021-10-11 02:27:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:04,210 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:27:04,210 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:27:04,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:27:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:27:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-10-11 02:27:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:27:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 02:27:04,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-10-11 02:27:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:04,223 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 02:27:04,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:27:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 02:27:04,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:27:04,225 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:04,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:04,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:04,441 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:04,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:04,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1712003936, now seen corresponding path program 2 times [2021-10-11 02:27:04,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:04,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711914201] [2021-10-11 02:27:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:04,461 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:04,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014164268] [2021-10-11 02:27:04,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:04,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:27:04,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 02:27:04,557 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:04,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:04,725 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:04,725 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:04,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:04 BoogieIcfgContainer [2021-10-11 02:27:04,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:04,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:04,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:04,963 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:04,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:57" (3/4) ... [2021-10-11 02:27:04,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:05,029 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a9afaa4-4290-4fdf-a311-0d18078d9e52/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:05,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:05,033 INFO L168 Benchmark]: Toolchain (without parser) took 8825.68 ms. Allocated memory was 94.4 MB in the beginning and 186.6 MB in the end (delta: 92.3 MB). Free memory was 58.3 MB in the beginning and 103.8 MB in the end (delta: -45.5 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,034 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:05,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.47 ms. Allocated memory is still 94.4 MB. Free memory was 58.0 MB in the beginning and 69.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:05,035 INFO L168 Benchmark]: Boogie Preprocessor took 27.67 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 67.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,035 INFO L168 Benchmark]: RCFGBuilder took 574.97 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 40.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,036 INFO L168 Benchmark]: TraceAbstraction took 7847.76 ms. Allocated memory was 94.4 MB in the beginning and 186.6 MB in the end (delta: 92.3 MB). Free memory was 40.5 MB in the beginning and 106.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,036 INFO L168 Benchmark]: Witness Printer took 69.76 ms. Allocated memory is still 186.6 MB. Free memory was 105.9 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:05,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.47 ms. Allocated memory is still 94.4 MB. Free memory was 58.0 MB in the beginning and 69.8 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.67 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 67.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.97 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 40.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7847.76 ms. Allocated memory was 94.4 MB in the beginning and 186.6 MB in the end (delta: 92.3 MB). Free memory was 40.5 MB in the beginning and 106.9 MB in the end (delta: -66.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.76 ms. Allocated memory is still 186.6 MB. Free memory was 105.9 MB in the beginning and 103.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=2] [L31] COND TRUE i