./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs --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 fef737e6ce8f4d154b70d44967f8d8c87159a2fe ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs --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 fef737e6ce8f4d154b70d44967f8d8c87159a2fe ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:26:58,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:58,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:58,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:58,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:58,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:58,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:58,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:58,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:58,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:58,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:58,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:58,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:58,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:58,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:58,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:58,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:58,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:58,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:58,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:58,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:58,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:58,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:58,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:58,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:58,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:58,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:58,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:58,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:58,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:58,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:58,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:58,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:58,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:58,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:58,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:58,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:58,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:58,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:58,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:58,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:58,268 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:26:58,306 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:58,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:58,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:58,308 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:58,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:58,308 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:58,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:26:58,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:58,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:58,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:26:58,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:26:58,310 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:58,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:26:58,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:26:58,310 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:26:58,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:58,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:58,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:58,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:58,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:58,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:58,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:58,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:58,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:58,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:58,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:58,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:58,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:58,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:58,316 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fef737e6ce8f4d154b70d44967f8d8c87159a2fe [2021-10-16 02:26:58,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:58,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:58,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:58,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:58,668 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:58,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-lit/cggmp2005b.i [2021-10-16 02:26:58,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/5cb41be98/bb8277334add43bf9babb0e83580ac68/FLAGa2d80925d [2021-10-16 02:26:59,278 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:59,279 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i [2021-10-16 02:26:59,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/5cb41be98/bb8277334add43bf9babb0e83580ac68/FLAGa2d80925d [2021-10-16 02:26:59,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/5cb41be98/bb8277334add43bf9babb0e83580ac68 [2021-10-16 02:26:59,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:59,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:59,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:59,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:59,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:59,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@229e3eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59, skipping insertion in model container [2021-10-16 02:26:59,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:59,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:59,910 WARN L228 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i[895,908] [2021-10-16 02:26:59,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:59,928 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:59,943 WARN L228 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i[895,908] [2021-10-16 02:26:59,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:59,960 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:59,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59 WrapperNode [2021-10-16 02:26:59,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:59,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:59,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:59,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:59,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:26:59,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:00,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:27:00,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:27:00,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:27:00,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:27:00,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:27:00,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:27:00,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:27:00,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (1/1) ... [2021-10-16 02:27:00,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:00,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:00,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:27:00,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:27:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:27:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:27:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:27:00,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:27:00,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:00,410 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-16 02:27:00,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:00 BoogieIcfgContainer [2021-10-16 02:27:00,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:00,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:00,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:00,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:00,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:59" (1/3) ... [2021-10-16 02:27:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127438a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:00, skipping insertion in model container [2021-10-16 02:27:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:59" (2/3) ... [2021-10-16 02:27:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127438a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:00, skipping insertion in model container [2021-10-16 02:27:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:00" (3/3) ... [2021-10-16 02:27:00,423 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-10-16 02:27:00,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:00,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:00,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:00,524 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:27:00,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:27:00,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:00,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:27:00,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:00,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2622986, now seen corresponding path program 1 times [2021-10-16 02:27:00,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:00,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404154606] [2021-10-16 02:27:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:00,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:00,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:27:00,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404154606] [2021-10-16 02:27:00,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404154606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:00,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:00,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:27:00,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460255713] [2021-10-16 02:27:00,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:27:00,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:27:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:27:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:27:00,753 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:00,777 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-10-16 02:27:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:27:00,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:27:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:00,788 INFO L225 Difference]: With dead ends: 15 [2021-10-16 02:27:00,788 INFO L226 Difference]: Without dead ends: 8 [2021-10-16 02:27:00,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:27:00,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-16 02:27:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-16 02:27:00,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-10-16 02:27:00,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 4 [2021-10-16 02:27:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:00,827 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-16 02:27:00,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2021-10-16 02:27:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:27:00,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:00,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:00,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:27:00,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:00,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:00,836 INFO L82 PathProgramCache]: Analyzing trace with hash -611974003, now seen corresponding path program 1 times [2021-10-16 02:27:00,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:00,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698621586] [2021-10-16 02:27:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:00,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:00,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:27:00,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698621586] [2021-10-16 02:27:00,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698621586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:00,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:00,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:27:00,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987707709] [2021-10-16 02:27:00,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:27:00,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:27:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:27:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:27:00,920 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:00,941 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2021-10-16 02:27:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:27:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-16 02:27:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:00,943 INFO L225 Difference]: With dead ends: 15 [2021-10-16 02:27:00,943 INFO L226 Difference]: Without dead ends: 9 [2021-10-16 02:27:00,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:27:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-16 02:27:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-16 02:27:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-10-16 02:27:00,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-10-16 02:27:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:00,950 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-10-16 02:27:00,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-10-16 02:27:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:27:00,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:00,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:00,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:27:00,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1360222467, now seen corresponding path program 1 times [2021-10-16 02:27:00,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:27:00,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812440888] [2021-10-16 02:27:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:00,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:27:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:27:01,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:27:01,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812440888] [2021-10-16 02:27:01,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812440888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:27:01,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648226941] [2021-10-16 02:27:01,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:01,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:27:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:01,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:27:01,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:27:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:01,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:27:01,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:27:01,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:27:01,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648226941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:01,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [762711612] [2021-10-16 02:27:01,231 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-16 02:27:01,232 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:27:01,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:27:01,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:27:01,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:27:01,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,307 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:27:01,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:27:01,315 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:27:01,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:27:01,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-16 02:27:01,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:01,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:27:01,416 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 02:27:01,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 02:27:01,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:27:01,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 02:27:01,442 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:27:01,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:01,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:27:01,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-16 02:27:01,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:27:01,507 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:83 [2021-10-16 02:27:01,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:01,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:27:01,726 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:27:01,730 INFO L168 Benchmark]: Toolchain (without parser) took 2068.92 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 80.3 MB in the beginning and 113.5 MB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,731 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.99 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 94.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,732 INFO L168 Benchmark]: Boogie Preprocessor took 23.82 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,733 INFO L168 Benchmark]: RCFGBuilder took 386.93 ms. Allocated memory is still 119.5 MB. Free memory was 91.6 MB in the beginning and 81.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:01,733 INFO L168 Benchmark]: TraceAbstraction took 1314.00 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 80.8 MB in the beginning and 113.5 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:01,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory was 97.0 MB in the beginning and 97.0 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.99 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 94.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.51 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.82 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 386.93 ms. Allocated memory is still 119.5 MB. Free memory was 91.6 MB in the beginning and 81.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1314.00 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 80.8 MB in the beginning and 113.5 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:27:01,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:27:04,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:27:04,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:27:04,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:27:04,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:27:04,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:27:04,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:27:04,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:27:04,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:27:04,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:27:04,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:27:04,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:27:04,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:27:04,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:27:04,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:27:04,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:27:04,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:27:04,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:27:04,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:27:04,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:27:04,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:27:04,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:27:04,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:27:04,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:27:04,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:27:04,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:27:04,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:27:04,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:27:04,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:27:04,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:27:04,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:27:04,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:27:04,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:27:04,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:27:04,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:27:04,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:27:04,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:27:04,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:27:04,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:27:04,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:27:04,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:27:04,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:27:04,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:27:04,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:27:04,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:27:04,689 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:27:04,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:27:04,689 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:27:04,689 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:27:04,690 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:27:04,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:27:04,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:27:04,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:27:04,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:27:04,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:27:04,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:27:04,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:27:04,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:27:04,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:27:04,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:27:04,694 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:27:04,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:27:04,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:27:04,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:27:04,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:27:04,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:27:04,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:27:04,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:27:04,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:04,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:27:04,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:27:04,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:27:04,697 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:27:04,697 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:04,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:27:04,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:27:04,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:27:04,698 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fef737e6ce8f4d154b70d44967f8d8c87159a2fe [2021-10-16 02:27:05,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:27:05,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:27:05,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:27:05,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:27:05,166 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:27:05,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-lit/cggmp2005b.i [2021-10-16 02:27:05,265 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/91af5ef3b/e3a349545403481f8f61bcfdfc4a6e19/FLAGbbe15c896 [2021-10-16 02:27:05,935 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:27:05,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i [2021-10-16 02:27:05,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/91af5ef3b/e3a349545403481f8f61bcfdfc4a6e19/FLAGbbe15c896 [2021-10-16 02:27:06,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/data/91af5ef3b/e3a349545403481f8f61bcfdfc4a6e19 [2021-10-16 02:27:06,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:27:06,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:27:06,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:06,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:27:06,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:27:06,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24690adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06, skipping insertion in model container [2021-10-16 02:27:06,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:27:06,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:27:06,472 WARN L228 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i[895,908] [2021-10-16 02:27:06,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:06,499 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:27:06,514 WARN L228 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_c180466a-8aeb-4dd5-a71c-1ea59995f580/sv-benchmarks/c/loop-lit/cggmp2005b.i[895,908] [2021-10-16 02:27:06,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:27:06,565 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:27:06,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06 WrapperNode [2021-10-16 02:27:06,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:27:06,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:06,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:27:06,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:27:06,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:27:06,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:27:06,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:27:06,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:27:06,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:27:06,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:27:06,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:27:06,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:27:06,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (1/1) ... [2021-10-16 02:27:06,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:27:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:06,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:27:06,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:27:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:27:06,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:27:06,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:27:06,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:27:07,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:27:07,024 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-16 02:27:07,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:07 BoogieIcfgContainer [2021-10-16 02:27:07,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:27:07,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:27:07,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:27:07,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:27:07,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:27:06" (1/3) ... [2021-10-16 02:27:07,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cabb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:07, skipping insertion in model container [2021-10-16 02:27:07,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:27:06" (2/3) ... [2021-10-16 02:27:07,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cabb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:27:07, skipping insertion in model container [2021-10-16 02:27:07,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:07" (3/3) ... [2021-10-16 02:27:07,035 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2021-10-16 02:27:07,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:27:07,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:27:07,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:27:07,117 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:27:07,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:27:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:27:07,159 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:07,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:27:07,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:07,168 INFO L82 PathProgramCache]: Analyzing trace with hash 890522599, now seen corresponding path program 1 times [2021-10-16 02:27:07,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:07,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716595626] [2021-10-16 02:27:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:07,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:07,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:07,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:07,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:27:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:07,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:27:07,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:07,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:07,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:07,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716595626] [2021-10-16 02:27:07,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716595626] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:07,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:07,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:27:07,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663461304] [2021-10-16 02:27:07,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:27:07,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:27:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:27:07,454 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:07,471 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2021-10-16 02:27:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:27:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:27:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:07,482 INFO L225 Difference]: With dead ends: 26 [2021-10-16 02:27:07,482 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:27:07,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:27:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:27:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:27:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-10-16 02:27:07,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2021-10-16 02:27:07,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:07,522 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-10-16 02:27:07,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-10-16 02:27:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:27:07,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:07,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:27:07,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:07,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:07,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:07,738 INFO L82 PathProgramCache]: Analyzing trace with hash 889658660, now seen corresponding path program 1 times [2021-10-16 02:27:07,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:07,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294701086] [2021-10-16 02:27:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:07,739 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:07,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:07,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:07,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:27:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:07,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:27:07,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:07,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:07,925 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:07,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294701086] [2021-10-16 02:27:07,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294701086] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:07,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:07,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:27:07,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341595379] [2021-10-16 02:27:07,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:27:07,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:27:07,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:27:07,930 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:07,964 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2021-10-16 02:27:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:27:07,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:27:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:07,968 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:27:07,968 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:27:07,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:27:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:27:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:27:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-16 02:27:07,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 6 [2021-10-16 02:27:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:07,974 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-16 02:27:07,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-16 02:27:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:27:07,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:07,976 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:07,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:08,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:08,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash 944710272, now seen corresponding path program 1 times [2021-10-16 02:27:08,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:08,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409253787] [2021-10-16 02:27:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:08,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:08,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:08,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:27:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:08,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:27:08,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:27:08,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:27:08,433 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:08,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409253787] [2021-10-16 02:27:08,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409253787] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:08,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:08,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:27:08,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550267735] [2021-10-16 02:27:08,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:27:08,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:27:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:27:08,437 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:08,447 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-10-16 02:27:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:27:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 02:27:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:08,449 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:27:08,449 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:27:08,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:27:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:27:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:27:08,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-16 02:27:08,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2021-10-16 02:27:08,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:08,456 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-16 02:27:08,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-16 02:27:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:27:08,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:08,457 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:08,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:08,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:08,671 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:08,672 INFO L82 PathProgramCache]: Analyzing trace with hash 731591740, now seen corresponding path program 1 times [2021-10-16 02:27:08,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:08,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827055141] [2021-10-16 02:27:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:08,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:08,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:08,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:27:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:08,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:27:08,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:27:08,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:27:09,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:09,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827055141] [2021-10-16 02:27:09,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827055141] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:09,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1127139631] [2021-10-16 02:27:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:09,142 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:09,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:27:09,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:27:09,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:27:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:09,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:27:09,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:27:09,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:27:09,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1127139631] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:09,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:27:09,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-10-16 02:27:09,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144220490] [2021-10-16 02:27:09,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:27:09,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:27:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:27:09,477 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:09,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:09,520 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2021-10-16 02:27:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:27:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:27:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:09,522 INFO L225 Difference]: With dead ends: 24 [2021-10-16 02:27:09,523 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:27:09,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:27:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:27:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:27:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:27:09,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-16 02:27:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:09,528 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:27:09,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:27:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:27:09,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:27:09,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:27:09,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:09,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:09,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:27:09,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:27:09,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:09,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:09,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:09,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:09,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:27:10,016 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 37) the Hoare annotation is: (= (_ bv4 32) ULTIMATE.start_main_~k~0) [2021-10-16 02:27:10,016 INFO L853 garLoopResultBuilder]: At program point L35-3(lines 29 38) the Hoare annotation is: (or (= (_ bv4 32) ULTIMATE.start_main_~k~0) (and (= (bvadd (_ bv100 32) ULTIMATE.start_main_~j~0) (_ bv0 32)) (= ULTIMATE.start_main_~i~0 (_ bv0 32)))) [2021-10-16 02:27:10,016 INFO L853 garLoopResultBuilder]: At program point L31-2(lines 31 33) the Hoare annotation is: (or (= (_ bv4 32) ULTIMATE.start_main_~k~0) (bvsle ULTIMATE.start_main_~i~0 (_ bv100 32))) [2021-10-16 02:27:10,017 INFO L857 garLoopResultBuilder]: For program point L31-3(lines 31 33) no Hoare annotation was computed. [2021-10-16 02:27:10,017 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 02:27:10,017 INFO L860 garLoopResultBuilder]: At program point L40(lines 24 41) the Hoare annotation is: true [2021-10-16 02:27:10,017 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:27:10,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:27:10,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:27:10,018 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:27:10,018 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:27:10,018 INFO L857 garLoopResultBuilder]: For program point L29-2(lines 29 38) no Hoare annotation was computed. [2021-10-16 02:27:10,018 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:27:10,018 INFO L860 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-10-16 02:27:10,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:27:10,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:27:10 BoogieIcfgContainer [2021-10-16 02:27:10,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:27:10,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:27:10,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:27:10,036 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:27:10,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:27:07" (3/4) ... [2021-10-16 02:27:10,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:27:10,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:27:10,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:27:10,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:27:10,049 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:27:10,083 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:27:10,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:27:10,084 INFO L168 Benchmark]: Toolchain (without parser) took 3789.07 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 39.3 MB in the beginning and 44.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,085 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:10,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.10 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 45.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.35 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,086 INFO L168 Benchmark]: Boogie Preprocessor took 25.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 42.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:27:10,086 INFO L168 Benchmark]: RCFGBuilder took 369.05 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 33.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,087 INFO L168 Benchmark]: TraceAbstraction took 3006.88 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 32.8 MB in the beginning and 47.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 397.9 kB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,087 INFO L168 Benchmark]: Witness Printer took 47.14 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:27:10,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 60.8 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.10 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 45.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.35 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.81 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 42.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 369.05 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 33.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3006.88 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 32.8 MB in the beginning and 47.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 397.9 kB. Max. memory is 16.1 GB. * Witness Printer took 47.14 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2917.5ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 30.5ms, AutomataDifference: 160.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 81.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 9 SDslu, 51 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 207.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 15 NumberOfFragments, 25 HoareAnnotationTreeSize, 5 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 52.8ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 21.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 60.0ms SsaConstructionTime, 103.0ms SatisfiabilityAnalysisTime, 1007.4ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 6 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 38/44 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 4bv32 == k - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 4bv32 == k || ~bvsle32(i, 100bv32) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 4bv32 == k || (~bvadd64(100bv32, j) == 0bv32 && i == 0bv32) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:27:10,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c180466a-8aeb-4dd5-a71c-1ea59995f580/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...