./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/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 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-a4ecdab [2020-11-28 07:28:51,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:28:51,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:28:51,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:28:51,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:28:51,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:28:51,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:28:51,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:28:51,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:28:51,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:28:51,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:28:51,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:28:51,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:28:51,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:28:51,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:28:51,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:28:51,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:28:51,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:28:51,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:28:51,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:28:51,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:28:51,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:28:51,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:28:51,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:28:51,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:28:51,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:28:51,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:28:51,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:28:51,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:28:51,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:28:51,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:28:51,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:28:51,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:28:51,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:28:51,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:28:51,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:28:51,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:28:51,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:28:51,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:28:51,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:28:51,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:28:51,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:28:51,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:28:51,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:28:51,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:28:51,389 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:28:51,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:28:51,389 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:28:51,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:28:51,390 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:28:51,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:28:51,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:28:51,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:28:51,391 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:28:51,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:28:51,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:28:51,392 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:28:51,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:28:51,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:28:51,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:28:51,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:28:51,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:28:51,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:28:51,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:28:51,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:28:51,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:28:51,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:28:51,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:28:51,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:28:51,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:28:51,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:28:51,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:28:51,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:28:51,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:28:51,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:28:51,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:28:51,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:28:51,398 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:28:51,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:28:51,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:28:51,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:28:51,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:28:51,400 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_44fb4d74-65b5-4ab0-b124-1323192409fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a5bf013e0e121d7379402f0bf74321ad24fd8fa [2020-11-28 07:28:51,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:28:51,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:28:51,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:28:51,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:28:51,813 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:28:51,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/../../sv-benchmarks/c/array-fpi/sqm-iff.c [2020-11-28 07:28:51,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/data/9b23a4fac/2f972830c3884b34a8a10bf726648b0e/FLAG16ddccef4 [2020-11-28 07:28:52,417 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:28:52,418 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/sv-benchmarks/c/array-fpi/sqm-iff.c [2020-11-28 07:28:52,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/data/9b23a4fac/2f972830c3884b34a8a10bf726648b0e/FLAG16ddccef4 [2020-11-28 07:28:52,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/data/9b23a4fac/2f972830c3884b34a8a10bf726648b0e [2020-11-28 07:28:52,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:28:52,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:28:52,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:52,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:28:52,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:28:52,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:52" (1/1) ... [2020-11-28 07:28:52,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a633222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:52, skipping insertion in model container [2020-11-28 07:28:52,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:28:52" (1/1) ... [2020-11-28 07:28:52,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:28:52,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:28:53,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:53,098 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:28:53,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:28:53,135 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:28:53,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53 WrapperNode [2020-11-28 07:28:53,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:28:53,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:53,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:28:53,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:28:53,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:28:53,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:28:53,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:28:53,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:28:53,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... [2020-11-28 07:28:53,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:28:53,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:28:53,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:28:53,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:28:53,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/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 07:28:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:28:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:28:53,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:28:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:28:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:28:53,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:28:53,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:28:54,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:28:54,040 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:28:54,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:54 BoogieIcfgContainer [2020-11-28 07:28:54,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:28:54,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:28:54,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:28:54,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:28:54,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:28:52" (1/3) ... [2020-11-28 07:28:54,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4bd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:54, skipping insertion in model container [2020-11-28 07:28:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:28:53" (2/3) ... [2020-11-28 07:28:54,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae4bd6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:28:54, skipping insertion in model container [2020-11-28 07:28:54,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:54" (3/3) ... [2020-11-28 07:28:54,052 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2020-11-28 07:28:54,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:28:54,068 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:28:54,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:28:54,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:28:54,106 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:28:54,106 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:28:54,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:28:54,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:28:54,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:28:54,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:28:54,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:28:54,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 07:28:54,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:28:54,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:54,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:54,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:54,152 INFO L82 PathProgramCache]: Analyzing trace with hash 104833010, now seen corresponding path program 1 times [2020-11-28 07:28:54,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:54,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590808786] [2020-11-28 07:28:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:54,278 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:28:54,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218638916] [2020-11-28 07:28:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/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 07:28:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:54,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:28:54,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:54,510 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 07:28:54,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:54,538 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 07:28:54,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590808786] [2020-11-28 07:28:54,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:28:54,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218638916] [2020-11-28 07:28:54,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:54,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:28:54,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527394008] [2020-11-28 07:28:54,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:28:54,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:54,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:28:54,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:28:54,563 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-28 07:28:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:54,625 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-11-28 07:28:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:28:54,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:28:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:54,636 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:28:54,637 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 07:28:54,640 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 07:28:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 07:28:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 07:28:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 07:28:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-28 07:28:54,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2020-11-28 07:28:54,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:54,676 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 07:28:54,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:28:54,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 07:28:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:28:54,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:54,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:54,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:28:54,891 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:54,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1096893833, now seen corresponding path program 1 times [2020-11-28 07:28:54,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:54,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237588881] [2020-11-28 07:28:54,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:54,919 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:28:54,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122987746] [2020-11-28 07:28:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/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 07:28:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:28:54,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:55,027 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 07:28:55,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:55,059 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 07:28:55,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237588881] [2020-11-28 07:28:55,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:28:55,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122987746] [2020-11-28 07:28:55,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:55,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-11-28 07:28:55,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71321155] [2020-11-28 07:28:55,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:28:55,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:28:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:28:55,063 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 5 states. [2020-11-28 07:28:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:55,159 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-11-28 07:28:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:28:55,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:28:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:55,161 INFO L225 Difference]: With dead ends: 21 [2020-11-28 07:28:55,161 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:28:55,162 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 07:28:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:28:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2020-11-28 07:28:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:28:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-11-28 07:28:55,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2020-11-28 07:28:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:55,167 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 07:28:55,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:28:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 07:28:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:28:55,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:55,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:55,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:55,383 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 355073353, now seen corresponding path program 1 times [2020-11-28 07:28:55,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:28:55,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286321574] [2020-11-28 07:28:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:28:55,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:28:55,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486352693] [2020-11-28 07:28:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/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 07:28:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:55,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:28:55,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:28:55,637 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:28:55,638 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:28:55,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:28:55,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:55 BoogieIcfgContainer [2020-11-28 07:28:55,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:55,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:55,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:55,870 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:55,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:28:54" (3/4) ... [2020-11-28 07:28:55,873 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:28:55,925 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_44fb4d74-65b5-4ab0-b124-1323192409fe/bin/utaipan/witness.graphml [2020-11-28 07:28:55,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:55,927 INFO L168 Benchmark]: Toolchain (without parser) took 3113.03 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 55.6 MB in the beginning and 74.6 MB in the end (delta: -19.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:55,928 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:55,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.23 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 63.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:55,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.34 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:55,931 INFO L168 Benchmark]: Boogie Preprocessor took 61.82 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 60.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:55,931 INFO L168 Benchmark]: RCFGBuilder took 773.06 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 34.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:55,932 INFO L168 Benchmark]: TraceAbstraction took 1825.35 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 34.4 MB in the beginning and 76.7 MB in the end (delta: -42.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:55,933 INFO L168 Benchmark]: Witness Printer took 55.14 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 74.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:55,938 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 86.0 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.23 ms. Allocated memory is still 86.0 MB. Free memory was 55.4 MB in the beginning and 63.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.34 ms. Allocated memory is still 86.0 MB. Free memory was 63.4 MB in the beginning and 62.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.82 ms. Allocated memory is still 86.0 MB. Free memory was 62.1 MB in the beginning and 60.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 773.06 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 34.8 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1825.35 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 34.4 MB in the beginning and 76.7 MB in the end (delta: -42.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.14 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 74.6 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