./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn1f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn1f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan --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 2625b986cac66fb3a009b48427217d3081ac93ac ..................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 07:32:44,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:32:44,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:32:44,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:32:44,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:32:44,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:32:44,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:32:44,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:32:44,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:32:44,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:32:44,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:32:44,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:32:44,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:32:44,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:32:44,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:32:44,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:32:44,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:32:44,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:32:44,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:32:44,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:32:44,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:32:44,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:32:44,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:32:44,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:32:44,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:32:44,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:32:44,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:32:44,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:32:44,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:32:44,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:32:44,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:32:44,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:32:44,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:32:44,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:32:44,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:32:44,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:32:44,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:32:44,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:32:44,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:32:44,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:32:44,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:32:44,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:32:44,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:32:44,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:32:44,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:32:44,939 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:32:44,939 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:32:44,940 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:32:44,940 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:32:44,940 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:32:44,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:32:44,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:32:44,941 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:32:44,941 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:32:44,942 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:32:44,942 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:32:44,942 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:32:44,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:32:44,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:32:44,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:32:44,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:32:44,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:32:44,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:32:44,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:32:44,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:32:44,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:32:44,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:32:44,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:32:44,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:32:44,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:32:44,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:32:44,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:32:44,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:32:44,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:32:44,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:32:44,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:32:44,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:32:44,949 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:32:44,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:32:44,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:32:44,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:32:44,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:32:44,950 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-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2625b986cac66fb3a009b48427217d3081ac93ac [2020-11-28 07:32:45,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:32:45,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:32:45,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:32:45,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:32:45,256 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:32:45,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn1f.c [2020-11-28 07:32:45,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/data/3ee125701/acdf70b9672a4e5b8e883e4c7c2c0655/FLAGa93fd080f [2020-11-28 07:32:45,766 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:32:45,767 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/sv-benchmarks/c/array-fpi/ifeqn1f.c [2020-11-28 07:32:45,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/data/3ee125701/acdf70b9672a4e5b8e883e4c7c2c0655/FLAGa93fd080f [2020-11-28 07:32:46,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/data/3ee125701/acdf70b9672a4e5b8e883e4c7c2c0655 [2020-11-28 07:32:46,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:32:46,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:32:46,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:32:46,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:32:46,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:32:46,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3500f00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46, skipping insertion in model container [2020-11-28 07:32:46,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:32:46,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:32:46,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:32:46,423 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:32:46,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:32:46,480 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:32:46,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46 WrapperNode [2020-11-28 07:32:46,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:32:46,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:32:46,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:32:46,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:32:46,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:32:46,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:32:46,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:32:46,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:32:46,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... [2020-11-28 07:32:46,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:32:46,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:32:46,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:32:46,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:32:46,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/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 [2020-11-28 07:32:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:32:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:32:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:32:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:32:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:32:46,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:32:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:32:47,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:32:47,319 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:32:47,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:47 BoogieIcfgContainer [2020-11-28 07:32:47,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:32:47,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:32:47,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:32:47,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:32:47,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:32:46" (1/3) ... [2020-11-28 07:32:47,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d7f447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:47, skipping insertion in model container [2020-11-28 07:32:47,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:32:46" (2/3) ... [2020-11-28 07:32:47,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d7f447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:32:47, skipping insertion in model container [2020-11-28 07:32:47,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:47" (3/3) ... [2020-11-28 07:32:47,332 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2020-11-28 07:32:47,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:32:47,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:32:47,365 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:32:47,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:32:47,414 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:32:47,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:32:47,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:32:47,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:32:47,414 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:32:47,416 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:32:47,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:32:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 07:32:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:32:47,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:47,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:47,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:47,456 INFO L82 PathProgramCache]: Analyzing trace with hash 104833010, now seen corresponding path program 1 times [2020-11-28 07:32:47,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:47,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187822115] [2020-11-28 07:32:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:47,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:32:47,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490795637] [2020-11-28 07:32:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/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 [2020-11-28 07:32:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:32:47,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:32:47,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:32:47,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187822115] [2020-11-28 07:32:47,783 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:32:47,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490795637] [2020-11-28 07:32:47,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:47,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:32:47,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364965431] [2020-11-28 07:32:47,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:32:47,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:47,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:32:47,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:32:47,804 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-28 07:32:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:47,857 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-11-28 07:32:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:32:47,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:32:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:47,868 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:32:47,868 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:32:47,871 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 [2020-11-28 07:32:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:32:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:32:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:32:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-28 07:32:47,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2020-11-28 07:32:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:47,910 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 07:32:47,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:32:47,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 07:32:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:32:47,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:47,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:48,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:32:48,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:48,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:48,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893833, now seen corresponding path program 1 times [2020-11-28 07:32:48,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:48,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223398520] [2020-11-28 07:32:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:48,166 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:32:48,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657849271] [2020-11-28 07:32:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/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 [2020-11-28 07:32:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:32:48,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:32:48,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:32:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:32:48,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:32:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:32:48,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223398520] [2020-11-28 07:32:48,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:32:48,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657849271] [2020-11-28 07:32:48,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:32:48,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-28 07:32:48,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150172779] [2020-11-28 07:32:48,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:32:48,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:32:48,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:32:48,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:32:48,319 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2020-11-28 07:32:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:32:48,380 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-28 07:32:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:32:48,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:32:48,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:32:48,381 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:32:48,381 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:32:48,382 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 [2020-11-28 07:32:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:32:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-11-28 07:32:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:32:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-28 07:32:48,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-11-28 07:32:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:32:48,386 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 07:32:48,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:32:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 07:32:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:32:48,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:32:48,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:32:48,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:48,600 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:32:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:32:48,600 INFO L82 PathProgramCache]: Analyzing trace with hash 355073353, now seen corresponding path program 1 times [2020-11-28 07:32:48,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:32:48,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303686290] [2020-11-28 07:32:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:32:48,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:32:48,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448749983] [2020-11-28 07:32:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/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 [2020-11-28 07:32:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:32:48,760 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:32:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:32:48,782 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:32:48,811 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:32:48,812 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:32:49,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:32:49,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:32:49 BoogieIcfgContainer [2020-11-28 07:32:49,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:32:49,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:32:49,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:32:49,054 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:32:49,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:32:47" (3/4) ... [2020-11-28 07:32:49,058 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:32:49,124 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1f0680a2-4e66-4a1a-9450-73acbb6766f6/bin/utaipan/witness.graphml [2020-11-28 07:32:49,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:32:49,126 INFO L168 Benchmark]: Toolchain (without parser) took 2979.28 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 60.8 MB in the end (delta: -6.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,127 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:32:49,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.46 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 65.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,129 INFO L168 Benchmark]: Boogie Preprocessor took 60.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 62.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,130 INFO L168 Benchmark]: RCFGBuilder took 714.00 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 36.2 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,131 INFO L168 Benchmark]: TraceAbstraction took 1729.65 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 35.8 MB in the beginning and 63.6 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:32:49,132 INFO L168 Benchmark]: Witness Printer took 71.39 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 60.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:32:49,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 60.2 MB in the beginning and 60.1 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.46 ms. Allocated memory is still 88.1 MB. Free memory was 54.1 MB in the beginning and 65.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.28 ms. Allocated memory is still 88.1 MB. Free memory was 64.8 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.77 ms. Allocated memory is still 88.1 MB. Free memory was 63.5 MB in the beginning and 62.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 714.00 ms. Allocated memory is still 88.1 MB. Free memory was 62.2 MB in the beginning and 36.2 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1729.65 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 35.8 MB in the beginning and 63.6 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 71.39 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 60.8 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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=1] [L31] COND TRUE i