./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s3iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c931059f8de62343b75e0a40b805bb4dbf7de2b8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-26 02:53:31,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:53:31,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:53:31,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:53:31,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:53:31,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:53:31,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:53:31,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:53:31,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:53:31,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:53:31,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:53:31,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:53:31,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:53:31,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:53:31,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:53:31,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:53:31,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:53:31,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:53:31,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:53:31,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:53:31,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:53:31,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:53:31,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:53:31,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:53:31,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:53:31,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:53:31,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:53:31,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:53:31,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:53:31,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:53:31,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:53:31,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:53:31,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:53:31,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:53:31,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:53:31,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:53:31,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:53:31,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:53:31,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:53:31,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:53:31,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:53:31,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:53:31,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:53:31,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:53:31,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:53:31,502 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:53:31,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:53:31,503 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:53:31,503 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:53:31,503 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:53:31,503 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:53:31,503 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:53:31,504 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:53:31,504 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:53:31,504 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:53:31,504 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:53:31,504 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:53:31,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:53:31,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:53:31,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:53:31,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:53:31,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:53:31,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:53:31,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:53:31,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:53:31,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:53:31,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:53:31,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:53:31,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:53:31,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:53:31,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:53:31,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:53:31,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:53:31,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:53:31,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_42d1d353-fd91-45fe-ab9b-ae459addc54e/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(__VERIFIER_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 -> c931059f8de62343b75e0a40b805bb4dbf7de2b8 [2019-11-26 02:53:31,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:53:31,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:53:31,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:53:31,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:53:31,665 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:53:31,666 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/../../sv-benchmarks/c/array-fpi/s3iff.c [2019-11-26 02:53:31,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/data/77954655c/01c409c39530409a91524daf5146a2cf/FLAG240412e40 [2019-11-26 02:53:32,062 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:53:32,063 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/sv-benchmarks/c/array-fpi/s3iff.c [2019-11-26 02:53:32,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/data/77954655c/01c409c39530409a91524daf5146a2cf/FLAG240412e40 [2019-11-26 02:53:32,458 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/data/77954655c/01c409c39530409a91524daf5146a2cf [2019-11-26 02:53:32,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:53:32,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:53:32,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:32,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:53:32,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:53:32,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2baa73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32, skipping insertion in model container [2019-11-26 02:53:32,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:53:32,499 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:53:32,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:32,783 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:53:32,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:32,819 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:53:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32 WrapperNode [2019-11-26 02:53:32,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:32,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:32,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:53:32,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:53:32,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:32,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:53:32,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:53:32,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:53:32,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... [2019-11-26 02:53:32,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:53:32,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:53:32,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:53:32,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:53:32,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/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 [2019-11-26 02:53:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:53:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:53:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:53:32,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:53:32,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:53:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:53:32,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:53:33,236 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:53:33,236 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-26 02:53:33,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:33 BoogieIcfgContainer [2019-11-26 02:53:33,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:53:33,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:53:33,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:53:33,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:53:33,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:53:32" (1/3) ... [2019-11-26 02:53:33,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea3f5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:33, skipping insertion in model container [2019-11-26 02:53:33,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:32" (2/3) ... [2019-11-26 02:53:33,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea3f5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:33, skipping insertion in model container [2019-11-26 02:53:33,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:33" (3/3) ... [2019-11-26 02:53:33,244 INFO L109 eAbstractionObserver]: Analyzing ICFG s3iff.c [2019-11-26 02:53:33,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:53:33,258 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:53:33,267 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:53:33,288 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:53:33,288 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:53:33,289 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:53:33,289 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:53:33,289 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:53:33,289 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:53:33,289 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:53:33,289 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:53:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-26 02:53:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:53:33,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:33,308 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:53:33,309 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:33,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:33,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1853087982, now seen corresponding path program 1 times [2019-11-26 02:53:33,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:33,323 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378180328] [2019-11-26 02:53:33,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:33,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378180328] [2019-11-26 02:53:33,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:33,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:53:33,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100154850] [2019-11-26 02:53:33,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:53:33,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:53:33,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:53:33,492 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-26 02:53:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:33,545 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-11-26 02:53:33,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:53:33,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:53:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:33,554 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:53:33,555 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 02:53:33,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:53:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 02:53:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 02:53:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 02:53:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-26 02:53:33,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-11-26 02:53:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:33,583 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-26 02:53:33,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:53:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-11-26 02:53:33,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:53:33,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:33,584 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:33,584 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:33,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1617540378, now seen corresponding path program 1 times [2019-11-26 02:53:33,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:33,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195965032] [2019-11-26 02:53:33,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:53:33,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195965032] [2019-11-26 02:53:33,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:33,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:53:33,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636448889] [2019-11-26 02:53:33,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:53:33,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:53:33,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:33,662 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-11-26 02:53:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:33,694 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-26 02:53:33,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:53:33,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:53:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:33,695 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:53:33,695 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 02:53:33,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:53:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 02:53:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-26 02:53:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-26 02:53:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-26 02:53:33,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2019-11-26 02:53:33,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:33,699 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-26 02:53:33,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:53:33,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-11-26 02:53:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:53:33,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:33,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:33,700 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:33,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:33,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1395813533, now seen corresponding path program 1 times [2019-11-26 02:53:33,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:33,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491059152] [2019-11-26 02:53:33,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:33,723 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:53:33,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807411657] [2019-11-26 02:53:33,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/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 [2019-11-26 02:53:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:33,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-26 02:53:33,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:53:33,847 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-11-26 02:53:33,848 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:53:33,869 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:53:33,880 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-26 02:53:33,881 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-26 02:53:33,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:53:33,894 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:53:33,894 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-26 02:53:33,928 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-26 02:53:33,929 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:53:33,944 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:53:33,944 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:53:33,944 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28 [2019-11-26 02:53:34,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:34,025 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2019-11-26 02:53:34,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:53:34,045 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:53:34,046 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-26 02:53:34,047 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:46, output treesize:31 [2019-11-26 02:53:34,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:34,112 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:53:34,153 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:40,419 WARN L192 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 42 [2019-11-26 02:53:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:40,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491059152] [2019-11-26 02:53:40,430 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:40,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807411657] [2019-11-26 02:53:40,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [588273213] [2019-11-26 02:53:40,452 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:53:40,453 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:53:40,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:53:40,464 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:53:40,464 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:53:51,271 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:53:51,486 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:51,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:53:51,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-26 02:53:51,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544783056] [2019-11-26 02:53:51,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:53:51,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:51,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:53:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=199, Unknown=1, NotChecked=0, Total=240 [2019-11-26 02:53:51,488 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 12 states. [2019-11-26 02:53:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:51,618 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-26 02:53:51,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:53:51,619 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2019-11-26 02:53:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:51,620 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:53:51,620 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:53:51,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2019-11-26 02:53:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:53:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-11-26 02:53:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:53:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-26 02:53:51,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2019-11-26 02:53:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:51,624 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-26 02:53:51,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:53:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-11-26 02:53:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:53:51,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:51,625 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:51,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:53:51,826 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:51,826 INFO L82 PathProgramCache]: Analyzing trace with hash 123794289, now seen corresponding path program 2 times [2019-11-26 02:53:51,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:51,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040261655] [2019-11-26 02:53:51,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:51,846 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:53:51,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508940982] [2019-11-26 02:53:51,851 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/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 [2019-11-26 02:53:51,901 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:53:51,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:53:51,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:53:51,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:53:51,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:51,944 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:53:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:51,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040261655] [2019-11-26 02:53:51,983 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:51,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508940982] [2019-11-26 02:53:51,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [684517621] [2019-11-26 02:53:51,984 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:53:51,984 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:53:51,985 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:53:51,985 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:53:51,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:53:55,169 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:53:55,328 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:53:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-11-26 02:53:55,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830616706] [2019-11-26 02:53:55,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:53:55,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:53:55,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:53:55,330 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 9 states. [2019-11-26 02:53:55,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:55,445 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2019-11-26 02:53:55,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:53:55,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2019-11-26 02:53:55,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:55,446 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:53:55,446 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:53:55,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:53:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:53:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2019-11-26 02:53:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:53:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-26 02:53:55,449 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 9 [2019-11-26 02:53:55,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:55,450 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-26 02:53:55,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:53:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-26 02:53:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:53:55,450 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:55,450 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:55,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:53:55,657 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:55,657 INFO L82 PathProgramCache]: Analyzing trace with hash 320504262, now seen corresponding path program 3 times [2019-11-26 02:53:55,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:55,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336991189] [2019-11-26 02:53:55,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:55,664 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:53:55,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253838622] [2019-11-26 02:53:55,665 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/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 [2019-11-26 02:53:55,708 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-26 02:53:55,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:53:55,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:53:55,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:53:55,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:55,741 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:53:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:55,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336991189] [2019-11-26 02:53:55,762 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:55,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253838622] [2019-11-26 02:53:55,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1924878386] [2019-11-26 02:53:55,764 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 02:53:55,764 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:53:55,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:53:55,764 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:53:55,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:53:59,531 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:53:59,669 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:59,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:53:59,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-11-26 02:53:59,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199019184] [2019-11-26 02:53:59,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:53:59,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:53:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:53:59,671 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 8 states. [2019-11-26 02:53:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:59,733 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-26 02:53:59,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:53:59,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-26 02:53:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:59,737 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:53:59,737 INFO L226 Difference]: Without dead ends: 11 [2019-11-26 02:53:59,737 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:53:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-26 02:53:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-26 02:53:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 02:53:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-26 02:53:59,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2019-11-26 02:53:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:59,741 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-26 02:53:59,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:53:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-26 02:53:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:53:59,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:59,741 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:59,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:53:59,942 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:59,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash -457386638, now seen corresponding path program 4 times [2019-11-26 02:53:59,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:59,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901946994] [2019-11-26 02:53:59,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:59,957 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 02:53:59,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101521785] [2019-11-26 02:53:59,959 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:54:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:54:00,049 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:54:00,050 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:54:00,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:54:00,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:54:00 BoogieIcfgContainer [2019-11-26 02:54:00,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:54:00,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:54:00,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:54:00,277 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:54:00,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:33" (3/4) ... [2019-11-26 02:54:00,280 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:54:00,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42d1d353-fd91-45fe-ab9b-ae459addc54e/bin/utaipan/witness.graphml [2019-11-26 02:54:00,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:54:00,318 INFO L168 Benchmark]: Toolchain (without parser) took 27856.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.9 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -81.0 MB). Peak memory consumption was 123.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,318 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:00,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -223.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,319 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:54:00,319 INFO L168 Benchmark]: Boogie Preprocessor took 25.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,320 INFO L168 Benchmark]: RCFGBuilder took 358.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,320 INFO L168 Benchmark]: TraceAbstraction took 27038.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 109.8 MB). Peak memory consumption was 143.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,320 INFO L168 Benchmark]: Witness Printer took 39.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:54:00,322 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.4 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -223.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 358.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27038.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 109.8 MB). Peak memory consumption was 143.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 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: [L14] int N; [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 1 [L27] i=0 VAL [N=2] [L27] COND TRUE i