./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm-iff.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_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-iff.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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_c3ba381a-4f56-4660-97de-8d8be0210902/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 1a5bf013e0e121d7379402f0bf74321ad24fd8fa ...................................................................................................................................................................................................................................................................................................................................................................................... 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 02:28:45,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:45,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:45,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:45,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:45,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:45,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:45,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:45,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:45,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:45,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:45,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:45,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:45,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:45,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:45,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:45,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:45,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:45,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:45,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:45,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:45,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:45,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:45,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:45,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:45,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:45,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:45,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:45,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:45,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:45,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:45,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:45,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:45,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:45,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:45,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:45,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:45,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:45,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:45,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:45,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:45,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:45,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:45,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:45,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:45,493 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:45,493 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:45,493 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:45,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:45,494 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:45,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:45,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:45,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:45,496 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:45,496 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:45,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:45,497 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:45,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:45,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:45,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:45,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:45,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:45,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:45,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:45,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:45,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:45,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:45,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:45,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:45,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:45,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:45,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:45,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:45,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:45,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:45,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:45,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:45,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:45,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:45,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:45,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:45,505 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_c3ba381a-4f56-4660-97de-8d8be0210902/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a5bf013e0e121d7379402f0bf74321ad24fd8fa [2021-10-11 02:28:45,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:45,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:45,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:45,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:45,856 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:45,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/sqm-iff.c [2021-10-11 02:28:45,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/data/0d3ae9636/516a6a13c0b1434dba83cc4c84e27c8e/FLAG3a4aab5ca [2021-10-11 02:28:46,409 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:46,410 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/sv-benchmarks/c/array-fpi/sqm-iff.c [2021-10-11 02:28:46,417 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/data/0d3ae9636/516a6a13c0b1434dba83cc4c84e27c8e/FLAG3a4aab5ca [2021-10-11 02:28:46,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/data/0d3ae9636/516a6a13c0b1434dba83cc4c84e27c8e [2021-10-11 02:28:46,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:46,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:46,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:46,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:46,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:46,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:46" (1/1) ... [2021-10-11 02:28:46,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9c9526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:46, skipping insertion in model container [2021-10-11 02:28:46,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:46" (1/1) ... [2021-10-11 02:28:46,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:46,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:47,068 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_c3ba381a-4f56-4660-97de-8d8be0210902/sv-benchmarks/c/array-fpi/sqm-iff.c[590,603] [2021-10-11 02:28:47,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:47,100 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:47,112 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_c3ba381a-4f56-4660-97de-8d8be0210902/sv-benchmarks/c/array-fpi/sqm-iff.c[590,603] [2021-10-11 02:28:47,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:47,134 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:47,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47 WrapperNode [2021-10-11 02:28:47,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:47,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:47,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:47,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:47,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:47,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:47,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:47,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:47,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... [2021-10-11 02:28:47,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:47,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:47,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:47,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:47,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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 02:28:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:28:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:28:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:47,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:47,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:28:47,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:47,842 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:28:47,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:47 BoogieIcfgContainer [2021-10-11 02:28:47,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:47,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:47,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:47,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:47,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:46" (1/3) ... [2021-10-11 02:28:47,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca076e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:47, skipping insertion in model container [2021-10-11 02:28:47,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:47" (2/3) ... [2021-10-11 02:28:47,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca076e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:47, skipping insertion in model container [2021-10-11 02:28:47,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:47" (3/3) ... [2021-10-11 02:28:47,854 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2021-10-11 02:28:47,868 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:47,871 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:47,881 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:47,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:47,918 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:47,918 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:47,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:47,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:47,918 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:47,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:47,919 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:28:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:28:47,937 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:47,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:47,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:47,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1758921741, now seen corresponding path program 1 times [2021-10-11 02:28:47,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:47,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162807942] [2021-10-11 02:28:47,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:48,071 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:48,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885664984] [2021-10-11 02:28:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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 02:28:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:48,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:48,256 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 02:28:48,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:48,294 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 02:28:48,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162807942] [2021-10-11 02:28:48,295 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:48,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885664984] [2021-10-11 02:28:48,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:48,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-11 02:28:48,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478013941] [2021-10-11 02:28:48,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:48,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:48,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:48,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:48,318 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2021-10-11 02:28:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:48,359 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-10-11 02:28:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:48,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:28:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:48,369 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:28:48,369 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:28:48,372 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 02:28:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:28:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:28:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:28:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-11 02:28:48,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-10-11 02:28:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:48,402 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-11 02:28:48,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-11 02:28:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:48,402 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:48,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:48,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:28:48,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:48,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:48,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1256161657, now seen corresponding path program 1 times [2021-10-11 02:28:48,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:48,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322097040] [2021-10-11 02:28:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:48,640 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:48,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990896395] [2021-10-11 02:28:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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 02:28:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:48,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:28:48,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:28:48,734 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 02:28:48,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:28:48,761 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 02:28:48,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322097040] [2021-10-11 02:28:48,762 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:28:48,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990896395] [2021-10-11 02:28:48,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:48,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-11 02:28:48,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142360371] [2021-10-11 02:28:48,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:48,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:48,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:48,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:48,770 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2021-10-11 02:28:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:48,830 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-11 02:28:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:28:48,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:28:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:48,833 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:28:48,851 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:28:48,856 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 02:28:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:28:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2021-10-11 02:28:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:28:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-10-11 02:28:48,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-10-11 02:28:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:48,863 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-10-11 02:28:48,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:28:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-10-11 02:28:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:28:48,869 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:48,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:49,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:49,085 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 285260138, now seen corresponding path program 1 times [2021-10-11 02:28:49,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:49,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715513536] [2021-10-11 02:28:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:49,117 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:28:49,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284961147] [2021-10-11 02:28:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/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 02:28:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:49,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:49,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:28:49,282 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:28:49,282 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:28:49,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:28:49,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:28:49 BoogieIcfgContainer [2021-10-11 02:28:49,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:28:49,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:28:49,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:28:49,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:28:49,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:47" (3/4) ... [2021-10-11 02:28:49,518 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:28:49,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ba381a-4f56-4660-97de-8d8be0210902/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:28:49,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:28:49,592 INFO L168 Benchmark]: Toolchain (without parser) took 2797.92 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 61.3 MB in the beginning and 77.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,593 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.86 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 71.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,594 INFO L168 Benchmark]: Boogie Preprocessor took 24.95 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,595 INFO L168 Benchmark]: RCFGBuilder took 647.26 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 42.2 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,595 INFO L168 Benchmark]: TraceAbstraction took 1669.31 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 41.7 MB in the beginning and 79.1 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:28:49,596 INFO L168 Benchmark]: Witness Printer took 75.22 ms. Allocated memory is still 117.4 MB. Free memory was 79.1 MB in the beginning and 77.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:28:49,599 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.86 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 71.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.69 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.95 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 647.26 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 42.2 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1669.31 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 41.7 MB in the beginning and 79.1 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 75.22 ms. Allocated memory is still 117.4 MB. Free memory was 79.1 MB in the beginning and 77.2 MB in the end (delta: 1.9 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