./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 095737d8fbee9027efb54bd1ca6a270d14b06184 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:31:18,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:18,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:18,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:18,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:18,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:18,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:18,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:18,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:18,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:18,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:18,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:18,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:18,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:18,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:18,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:18,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:18,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:18,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:18,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:18,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:18,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:18,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:18,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:18,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:18,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:18,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:18,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:18,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:18,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:18,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:18,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:18,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:18,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:18,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:18,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:18,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:18,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:18,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:18,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:18,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:18,149 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:31:18,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:18,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:18,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:18,203 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:18,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:18,203 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:18,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:18,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:18,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:18,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:18,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:18,204 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:18,204 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:18,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:18,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:18,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:18,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:18,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:18,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:18,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:18,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:31:18,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:18,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:31:18,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:18,209 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:18,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:31:18,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:18,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:31:18,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:18,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:18,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:18,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:18,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:18,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:31:18,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:18,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:18,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:31:18,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:18,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:18,214 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095737d8fbee9027efb54bd1ca6a270d14b06184 [2021-10-11 02:31:18,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:18,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:18,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:18,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:18,555 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:18,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-11 02:31:18,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/data/d77b189c2/a98b4863e0bc499aa867acb8dbca3ad8/FLAG32b86bc5d [2021-10-11 02:31:19,103 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:19,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/sv-benchmarks/c/ldv-regression/test25-2.c [2021-10-11 02:31:19,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/data/d77b189c2/a98b4863e0bc499aa867acb8dbca3ad8/FLAG32b86bc5d [2021-10-11 02:31:19,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/data/d77b189c2/a98b4863e0bc499aa867acb8dbca3ad8 [2021-10-11 02:31:19,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:19,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:19,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:19,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:19,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:19,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c16fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19, skipping insertion in model container [2021-10-11 02:31:19,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:19,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:19,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-11 02:31:19,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:19,812 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:31:19,835 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/sv-benchmarks/c/ldv-regression/test25-2.c[949,962] [2021-10-11 02:31:19,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:19,853 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:31:19,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19 WrapperNode [2021-10-11 02:31:19,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:19,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:19,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:31:19,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:31:19,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:31:19,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:31:19,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:31:19,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:31:19,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... [2021-10-11 02:31:19,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:31:19,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:31:19,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:31:19,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:31:19,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:31:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:31:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:31:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:31:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:31:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:31:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:31:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:31:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:31:20,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:31:20,500 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:31:20,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:20 BoogieIcfgContainer [2021-10-11 02:31:20,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:31:20,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:31:20,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:31:20,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:31:20,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:31:19" (1/3) ... [2021-10-11 02:31:20,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7000f7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:20, skipping insertion in model container [2021-10-11 02:31:20,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:19" (2/3) ... [2021-10-11 02:31:20,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7000f7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:31:20, skipping insertion in model container [2021-10-11 02:31:20,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:20" (3/3) ... [2021-10-11 02:31:20,511 INFO L111 eAbstractionObserver]: Analyzing ICFG test25-2.c [2021-10-11 02:31:20,539 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:31:20,549 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:31:20,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:31:20,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:31:20,589 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:31:20,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:31:20,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:31:20,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:31:20,590 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:31:20,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:31:20,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:31:20,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:31:20,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:31:20,609 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:20,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:20,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:20,617 INFO L82 PathProgramCache]: Analyzing trace with hash -747951412, now seen corresponding path program 1 times [2021-10-11 02:31:20,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:20,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419984864] [2021-10-11 02:31:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:20,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419984864] [2021-10-11 02:31:20,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:20,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:31:20,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433484918] [2021-10-11 02:31:20,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:31:20,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:20,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:31:20,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:20,913 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2021-10-11 02:31:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:20,956 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-10-11 02:31:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:31:20,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:31:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:20,968 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:31:20,968 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:31:20,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:31:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:31:21,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:31:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:31:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 02:31:21,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-10-11 02:31:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:21,047 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 02:31:21,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:31:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-11 02:31:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:31:21,048 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:21,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:21,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:31:21,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:21,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1048251717, now seen corresponding path program 1 times [2021-10-11 02:31:21,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:21,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632221725] [2021-10-11 02:31:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:21,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632221725] [2021-10-11 02:31:21,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229676340] [2021-10-11 02:31:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:21,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:31:21,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:21,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:21,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385872849] [2021-10-11 02:31:21,523 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:31:21,524 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:21,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:21,533 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:21,533 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:23,290 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:23,409 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-10-11 02:31:23,549 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:31:23,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:23,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2021-10-11 02:31:23,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718096650] [2021-10-11 02:31:23,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:31:23,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:23,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:31:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:31:23,862 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2021-10-11 02:31:23,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:23,927 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-11 02:31:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:31:23,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-10-11 02:31:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:23,928 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:31:23,928 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:31:23,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:31:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:31:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:31:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:31:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-11 02:31:23,933 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-10-11 02:31:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:23,934 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-11 02:31:23,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:31:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-11 02:31:23,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:31:23,935 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:23,935 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:24,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:31:24,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1920028576, now seen corresponding path program 1 times [2021-10-11 02:31:24,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:24,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355804985] [2021-10-11 02:31:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:31:24,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355804985] [2021-10-11 02:31:24,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732567630] [2021-10-11 02:31:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:31:24,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:31:24,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:31:24,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263843169] [2021-10-11 02:31:24,300 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:31:24,302 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:24,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:24,303 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:24,304 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:25,491 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:25,639 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-10-11 02:31:25,776 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-10-11 02:31:25,918 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:31:26,121 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2021-10-11 02:31:26,253 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-10-11 02:31:26,461 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-10-11 02:31:26,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:26,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:26,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-11 02:31:26,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850661799] [2021-10-11 02:31:26,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:31:26,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:26,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:31:26,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:31:26,466 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2021-10-11 02:31:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:26,494 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-10-11 02:31:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:26,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-10-11 02:31:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:26,496 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:31:26,496 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:31:26,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:31:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:31:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:31:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:31:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-11 02:31:26,502 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-10-11 02:31:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:26,502 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-11 02:31:26,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:31:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-11 02:31:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:31:26,503 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:26,504 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:26,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:26,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:26,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1780694411, now seen corresponding path program 2 times [2021-10-11 02:31:26,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:31:26,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623142793] [2021-10-11 02:31:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:31:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:31:26,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623142793] [2021-10-11 02:31:26,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926978151] [2021-10-11 02:31:26,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:26,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:31:26,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:31:26,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-11 02:31:26,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:31:27,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:31:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-11 02:31:27,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [912267301] [2021-10-11 02:31:27,432 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:31:27,432 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:31:27,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:31:27,433 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:31:27,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:31:28,748 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:31:28,904 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-10-11 02:31:29,055 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-10-11 02:31:29,201 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-10-11 02:31:29,800 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-10-11 02:31:29,800 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:31:29,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:31:29,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2021-10-11 02:31:29,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683002853] [2021-10-11 02:31:29,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-10-11 02:31:29,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:31:29,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-11 02:31:29,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:31:29,803 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 20 states. [2021-10-11 02:31:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:30,286 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-11 02:31:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:31:30,286 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2021-10-11 02:31:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:30,287 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:31:30,287 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:30,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2021-10-11 02:31:30,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:30,288 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:31:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:30,288 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:30,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-10-11 02:31:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:30,289 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:30,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:31:30,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:30,615 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:30,615 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-10-11 02:31:30,615 INFO L262 CegarLoopResult]: For program point L37(lines 37 45) no Hoare annotation was computed. [2021-10-11 02:31:30,615 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:30,616 INFO L258 CegarLoopResult]: At program point L29-3(lines 29 32) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~j~0) (= |ULTIMATE.start_main_~#array~0.offset| 0) (<= ULTIMATE.start_main_~i~0 2147483647) (= |#NULL.base| 0) (<= 0 (+ ULTIMATE.start_main_~i~0 2147483648)) (<= 0 |ULTIMATE.start_main_~#cont~0.base|) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)) (<= 0 |#t~string4.base|) (= |ULTIMATE.start_main_~#cont~0.offset| 0) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= 0 |ULTIMATE.start_main_~#array~0.base|) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (<= 0 |#StackHeapBarrier|)) [2021-10-11 02:31:30,616 INFO L262 CegarLoopResult]: For program point L29-4(lines 23 52) no Hoare annotation was computed. [2021-10-11 02:31:30,616 INFO L262 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2021-10-11 02:31:30,616 INFO L262 CegarLoopResult]: For program point L34(lines 34 46) no Hoare annotation was computed. [2021-10-11 02:31:30,616 INFO L265 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2021-10-11 02:31:30,616 INFO L258 CegarLoopResult]: At program point L43(lines 23 52) the Hoare annotation is: false [2021-10-11 02:31:30,616 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 41) no Hoare annotation was computed. [2021-10-11 02:31:30,617 INFO L258 CegarLoopResult]: At program point L39-3(lines 39 41) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|))) (and (= ULTIMATE.start_main_~pa~0.base .cse0) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4) ULTIMATE.start_main_~pa~0.offset) (not (= |ULTIMATE.start_main_~#cont~0.base| .cse0)) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)))) [2021-10-11 02:31:30,617 INFO L258 CegarLoopResult]: At program point L39-4(lines 39 41) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#cont~0.base|) |ULTIMATE.start_main_~#cont~0.offset|) 4))) (and (= ULTIMATE.start_main_~pa~0.base .cse0) (= .cse1 ULTIMATE.start_main_~pa~0.offset) (not (= |ULTIMATE.start_main_~#cont~0.base| .cse0)) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (not (= |ULTIMATE.start_main_~#cont~0.base| |ULTIMATE.start_main_~#array~0.base|)) (<= (select (select |#memory_int| .cse0) .cse1) ULTIMATE.start_main_~i~0))) [2021-10-11 02:31:30,636 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,638 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,639 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,639 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,640 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,641 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,642 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,642 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,642 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,645 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,655 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,655 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,657 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,657 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:30 BoogieIcfgContainer [2021-10-11 02:31:30,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:30,663 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:30,663 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:30,663 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:30,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:31:20" (3/4) ... [2021-10-11 02:31:30,666 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:30,678 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-11 02:31:30,678 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:31:30,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:30,679 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:30,731 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4b7ba7-efe9-4335-ab76-370c2a9ae5ee/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:30,731 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:30,732 INFO L168 Benchmark]: Toolchain (without parser) took 11263.79 ms. Allocated memory was 102.8 MB in the beginning and 182.5 MB in the end (delta: 79.7 MB). Free memory was 60.3 MB in the beginning and 62.8 MB in the end (delta: -2.5 MB). Peak memory consumption was 77.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,733 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:30,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.78 ms. Allocated memory is still 102.8 MB. Free memory was 60.1 MB in the beginning and 76.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.50 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:30,734 INFO L168 Benchmark]: Boogie Preprocessor took 49.00 ms. Allocated memory is still 102.8 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:30,735 INFO L168 Benchmark]: RCFGBuilder took 545.97 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 52.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,736 INFO L168 Benchmark]: TraceAbstraction took 10157.74 ms. Allocated memory was 102.8 MB in the beginning and 182.5 MB in the end (delta: 79.7 MB). Free memory was 51.8 MB in the beginning and 66.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,737 INFO L168 Benchmark]: Witness Printer took 68.85 ms. Allocated memory is still 182.5 MB. Free memory was 66.0 MB in the beginning and 62.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:30,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 53.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.78 ms. Allocated memory is still 102.8 MB. Free memory was 60.1 MB in the beginning and 76.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.50 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 74.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.00 ms. Allocated memory is still 102.8 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 545.97 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 52.4 MB in the end (delta: 20.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10157.74 ms. Allocated memory was 102.8 MB in the beginning and 182.5 MB in the end (delta: 79.7 MB). Free memory was 51.8 MB in the beginning and 66.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 16.1 GB. * Witness Printer took 68.85 ms. Allocated memory is still 182.5 MB. Free memory was 66.0 MB in the beginning and 62.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((((((((((((((0 <= j && array == 0) && i <= 2147483647) && #NULL == 0) && 0 <= i + 2147483648) && 0 <= cont) && !(cont == array)) && 0 <= "0") && cont == 0) && 0 <= "reach_error") && 0 <= "test25-2.c") && "test25-2.c" == 0) && 0 <= array) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant [2021-10-11 02:31:30,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,769 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,770 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,771 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,772 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,773 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,774 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,774 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((pa == #memory_$Pointer$[cont][cont] && #memory_$Pointer$[cont][cont] + 4 == pa) && !(cont == #memory_$Pointer$[cont][cont])) && i < unknown-#memory_int-unknown[pa][pa] + 1) && !(cont == array)) && unknown-#memory_int-unknown[#memory_$Pointer$[cont][cont]][#memory_$Pointer$[cont][cont] + 4] <= i - InvariantResult [Line: 39]: Loop Invariant [2021-10-11 02:31:30,778 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,780 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,780 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,781 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-10-11 02:31:30,784 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-10-11 02:31:30,785 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: (((pa == #memory_$Pointer$[cont][cont] && #memory_$Pointer$[cont][cont] + 4 == pa) && !(cont == #memory_$Pointer$[cont][cont])) && i < unknown-#memory_int-unknown[pa][pa] + 1) && !(cont == array) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.9s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 14 SDslu, 48 SDs, 0 SdLazy, 146 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 150 HoareAnnotationTreeSize, 5 FomulaSimplifications, 297 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 82 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 6859 SizeOfPredicates, 24 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 29/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1768, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 1483, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 1473, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 740, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 23, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 209, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 21, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 12, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1423, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1423, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 72, DAG_COMPRESSION_RETAINED_NODES: 26, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...