./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn5f.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-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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 9a6037c76b46b0da4af31997de1947f2fadc4b09 ..................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-12-09 18:12:34,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:12:34,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:12:34,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:12:34,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:12:34,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:12:34,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:12:34,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:12:34,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:12:34,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:12:34,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:12:34,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:12:34,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:12:34,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:12:34,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:12:34,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:12:34,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:12:34,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:12:34,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:12:34,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:12:34,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:12:34,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:12:34,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:12:34,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:12:34,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:12:34,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:12:34,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:12:34,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:12:34,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:12:34,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:12:34,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:12:34,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:12:34,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:12:34,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:12:34,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:12:34,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:12:34,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:12:34,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:12:34,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:12:34,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:12:34,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:12:34,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:12:34,668 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:12:34,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:12:34,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:12:34,669 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:12:34,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:12:34,670 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:12:34,671 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:12:34,671 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:12:34,671 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:12:34,671 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:12:34,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:12:34,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:12:34,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:12:34,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:12:34,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:12:34,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:12:34,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:12:34,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:12:34,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:12:34,675 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_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a6037c76b46b0da4af31997de1947f2fadc4b09 [2020-12-09 18:12:34,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:12:34,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:12:34,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:12:34,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:12:34,855 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:12:34,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/../../sv-benchmarks/c/array-fpi/ifeqn5f.c [2020-12-09 18:12:34,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/data/dbd841012/d1c37912bb15477985b71f93be26f602/FLAG9b163710e [2020-12-09 18:12:35,267 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:12:35,267 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/sv-benchmarks/c/array-fpi/ifeqn5f.c [2020-12-09 18:12:35,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/data/dbd841012/d1c37912bb15477985b71f93be26f602/FLAG9b163710e [2020-12-09 18:12:35,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/data/dbd841012/d1c37912bb15477985b71f93be26f602 [2020-12-09 18:12:35,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:12:35,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:12:35,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:12:35,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:12:35,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:12:35,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351e227f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35, skipping insertion in model container [2020-12-09 18:12:35,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:12:35,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:12:35,437 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/sv-benchmarks/c/array-fpi/ifeqn5f.c[590,603] [2020-12-09 18:12:35,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:12:35,460 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:12:35,469 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/sv-benchmarks/c/array-fpi/ifeqn5f.c[590,603] [2020-12-09 18:12:35,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:12:35,488 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:12:35,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35 WrapperNode [2020-12-09 18:12:35,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:12:35,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:12:35,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:12:35,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:12:35,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:12:35,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:12:35,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:12:35,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:12:35,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... [2020-12-09 18:12:35,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:12:35,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:12:35,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:12:35,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:12:35,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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 [2020-12-09 18:12:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:12:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:12:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 18:12:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 18:12:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:12:35,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:12:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 18:12:35,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:12:35,929 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2020-12-09 18:12:35,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:12:35 BoogieIcfgContainer [2020-12-09 18:12:35,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:12:35,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:12:35,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:12:35,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:12:35,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:12:35" (1/3) ... [2020-12-09 18:12:35,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63093958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:12:35, skipping insertion in model container [2020-12-09 18:12:35,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:12:35" (2/3) ... [2020-12-09 18:12:35,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63093958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:12:35, skipping insertion in model container [2020-12-09 18:12:35,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:12:35" (3/3) ... [2020-12-09 18:12:35,939 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn5f.c [2020-12-09 18:12:35,953 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:12:35,955 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:12:35,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:12:35,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:12:35,980 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:12:35,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:12:35,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:12:35,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:12:35,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:12:35,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:12:35,981 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:12:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 18:12:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 18:12:35,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:12:35,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:12:35,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:12:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:12:35,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1758921741, now seen corresponding path program 1 times [2020-12-09 18:12:36,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:12:36,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752710026] [2020-12-09 18:12:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:12:36,077 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:12:36,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960952010] [2020-12-09 18:12:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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 [2020-12-09 18:12:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:12:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:12:36,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:12:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:12:36,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:12:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:12:36,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752710026] [2020-12-09 18:12:36,211 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:12:36,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960952010] [2020-12-09 18:12:36,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:12:36,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 18:12:36,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499762902] [2020-12-09 18:12:36,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:12:36,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:12:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:12:36,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:12:36,231 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 18:12:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:12:36,258 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-12-09 18:12:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:12:36,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 18:12:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:12:36,265 INFO L225 Difference]: With dead ends: 20 [2020-12-09 18:12:36,265 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 18:12:36,267 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 [2020-12-09 18:12:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 18:12:36,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 18:12:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 18:12:36,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-09 18:12:36,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2020-12-09 18:12:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:12:36,287 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-09 18:12:36,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:12:36,287 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-09 18:12:36,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:12:36,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:12:36,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:12:36,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 18:12:36,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:12:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:12:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1256161657, now seen corresponding path program 1 times [2020-12-09 18:12:36,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:12:36,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360828368] [2020-12-09 18:12:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:12:36,553 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:12:36,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841275172] [2020-12-09 18:12:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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 [2020-12-09 18:12:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:12:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:12:36,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:12:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 18:12:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:12:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 18:12:36,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360828368] [2020-12-09 18:12:36,719 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:12:36,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841275172] [2020-12-09 18:12:36,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:12:36,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-09 18:12:36,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869193569] [2020-12-09 18:12:36,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:12:36,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:12:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:12:36,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:12:36,722 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2020-12-09 18:12:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:12:36,749 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-12-09 18:12:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:12:36,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 18:12:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:12:36,750 INFO L225 Difference]: With dead ends: 21 [2020-12-09 18:12:36,750 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 18:12:36,751 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 [2020-12-09 18:12:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 18:12:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-12-09 18:12:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 18:12:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-12-09 18:12:36,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-12-09 18:12:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:12:36,753 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-12-09 18:12:36,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:12:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-09 18:12:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:12:36,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:12:36,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:12:36,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:12:36,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:12:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:12:36,956 INFO L82 PathProgramCache]: Analyzing trace with hash 285260138, now seen corresponding path program 1 times [2020-12-09 18:12:36,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:12:36,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774220886] [2020-12-09 18:12:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:12:36,984 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:12:36,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169278258] [2020-12-09 18:12:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/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 [2020-12-09 18:12:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:12:37,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:12:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:12:37,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:12:37,082 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 18:12:37,082 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:12:37,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:12:37,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:12:37 BoogieIcfgContainer [2020-12-09 18:12:37,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:12:37,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:12:37,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:12:37,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:12:37,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:12:35" (3/4) ... [2020-12-09 18:12:37,352 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 18:12:37,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e1c39c71-ff5c-48e2-ad0f-8fdbd9c8591c/bin/utaipan/witness.graphml [2020-12-09 18:12:37,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:12:37,387 INFO L168 Benchmark]: Toolchain (without parser) took 2101.32 ms. Allocated memory was 111.1 MB in the beginning and 180.4 MB in the end (delta: 69.2 MB). Free memory was 86.8 MB in the beginning and 153.0 MB in the end (delta: -66.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,388 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 76.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:12:37,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 87.1 MB in the end (delta: -545.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,389 INFO L168 Benchmark]: Boogie Preprocessor took 22.02 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,390 INFO L168 Benchmark]: RCFGBuilder took 392.61 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 58.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,390 INFO L168 Benchmark]: TraceAbstraction took 1417.29 ms. Allocated memory was 111.1 MB in the beginning and 180.4 MB in the end (delta: 69.2 MB). Free memory was 57.7 MB in the beginning and 155.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,390 INFO L168 Benchmark]: Witness Printer took 35.98 ms. Allocated memory is still 180.4 MB. Free memory was 155.1 MB in the beginning and 153.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:12:37,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 76.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 202.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 87.1 MB in the end (delta: -545.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.79 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.02 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 392.61 ms. Allocated memory is still 111.1 MB. Free memory was 84.4 MB in the beginning and 58.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1417.29 ms. Allocated memory was 111.1 MB in the beginning and 180.4 MB in the end (delta: 69.2 MB). Free memory was 57.7 MB in the beginning and 155.1 MB in the end (delta: -97.4 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Witness Printer took 35.98 ms. Allocated memory is still 180.4 MB. Free memory was 155.1 MB in the beginning and 153.0 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=1] [L31] COND TRUE i