./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8 --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 3d2afa409951165ba4b0317a5ac755d680981dee ............................................................................................................................................................................................................................................................................................................................................................................. 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_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8 --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 3d2afa409951165ba4b0317a5ac755d680981dee .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:40:29,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:29,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:29,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:29,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:29,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:29,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:29,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:29,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:29,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:29,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:29,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:29,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:29,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:29,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:29,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:29,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:29,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:29,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:29,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:29,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:29,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:29,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:29,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:29,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:29,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:29,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:29,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:29,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:29,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:29,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:29,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:29,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:29,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:29,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:29,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:29,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:29,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:29,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:29,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:29,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:29,370 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:40:29,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:29,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:29,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:29,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:29,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:29,423 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:29,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:40:29,423 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:29,429 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:29,430 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:40:29,431 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:40:29,431 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:29,431 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:40:29,432 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:40:29,432 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:40:29,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:29,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:29,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:40:29,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:29,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:29,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:40:29,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:29,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:40:29,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:29,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:29,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:40:29,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:29,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:40:29,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:29,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:29,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:29,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:29,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:29,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:40:29,439 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:40:29,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:40:29,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:40:29,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:29,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:29,440 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_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2afa409951165ba4b0317a5ac755d680981dee [2021-10-13 07:40:29,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:29,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:29,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:29,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:29,726 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:29,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-10-13 07:40:29,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/70a4031e9/81931241d7fe4960aa62f3cdc64052e2/FLAG239375bba [2021-10-13 07:40:30,209 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:30,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-10-13 07:40:30,218 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/70a4031e9/81931241d7fe4960aa62f3cdc64052e2/FLAG239375bba [2021-10-13 07:40:30,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/70a4031e9/81931241d7fe4960aa62f3cdc64052e2 [2021-10-13 07:40:30,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:30,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:30,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:30,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:30,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:30,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cc6a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30, skipping insertion in model container [2021-10-13 07:40:30,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:30,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:30,796 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_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-10-13 07:40:30,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:30,822 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:30,834 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_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-10-13 07:40:30,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:30,856 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:30,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30 WrapperNode [2021-10-13 07:40:30,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:30,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:30,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:30,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:30,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:30,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:30,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:30,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:30,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:30,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:30,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:30,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:30,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (1/1) ... [2021-10-13 07:40:30,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:30,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:30,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:40:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:40:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:31,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:31,454 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 07:40:31,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:31 BoogieIcfgContainer [2021-10-13 07:40:31,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:31,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:31,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:31,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:30" (1/3) ... [2021-10-13 07:40:31,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a93045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:31, skipping insertion in model container [2021-10-13 07:40:31,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:30" (2/3) ... [2021-10-13 07:40:31,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a93045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:31, skipping insertion in model container [2021-10-13 07:40:31,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:31" (3/3) ... [2021-10-13 07:40:31,465 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2021-10-13 07:40:31,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:31,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:40:31,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:31,523 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 [2021-10-13 07:40:31,523 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:40:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) 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) [2021-10-13 07:40:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:40:31,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:31,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:40:31,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:31,549 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2021-10-13 07:40:31,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:31,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514513648] [2021-10-13 07:40:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:31,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:31,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:40:31,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596523323] [2021-10-13 07:40:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:31,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:31,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:31,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:31,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:40:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:31,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:40:31,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:32,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:34,613 WARN L860 $PredicateComparison]: unable to prove that (= (+ (* 6 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (* 5 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (* 2 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* 12 c_ULTIMATE.start_main_~x~0))) is different from true [2021-10-13 07:40:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:34,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:34,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514513648] [2021-10-13 07:40:34,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:40:34,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596523323] [2021-10-13 07:40:34,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596523323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:34,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:34,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:40:34,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490214824] [2021-10-13 07:40:34,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:40:34,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:40:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:40:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2021-10-13 07:40:34,638 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) 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) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-13 07:40:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:34,702 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-10-13 07:40:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:40:34,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-13 07:40:34,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:34,711 INFO L225 Difference]: With dead ends: 41 [2021-10-13 07:40:34,712 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:40:34,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2518.9ms TimeCoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2021-10-13 07:40:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:40:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-13 07:40:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-13 07:40:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 07:40:34,742 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 4 [2021-10-13 07:40:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:34,743 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 07:40:34,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-13 07:40:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 07:40:34,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:40:34,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:34,744 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-13 07:40:34,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:34,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:40:34,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:34,964 INFO L82 PathProgramCache]: Analyzing trace with hash -411421367, now seen corresponding path program 1 times [2021-10-13 07:40:34,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:40:34,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213426072] [2021-10-13 07:40:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:34,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:40:34,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:40:34,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363907803] [2021-10-13 07:40:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:34,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:34,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:34,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:40:35,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:40:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:35,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:40:35,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:35,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:40:35,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:40:35,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213426072] [2021-10-13 07:40:35,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:40:35,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363907803] [2021-10-13 07:40:35,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363907803] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:40:35,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1937239527] [2021-10-13 07:40:35,393 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 07:40:35,393 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:40:35,398 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:40:35,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:40:35,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:40:35,453 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-13 07:40:35,463 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:35,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:40:35,466 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:40:35,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:40:35,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-13 07:40:35,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:40:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:40:35,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:40:35,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:40:35,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,552 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:40:35,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:40:35,554 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:35,570 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:40:35,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,571 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:40:35,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:40:35,572 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:40:35,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:40:35,627 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:40:35,631 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-13 07:40:35,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-13 07:40:35,639 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:40:35,641 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:290, output treesize:144 [2021-10-13 07:40:35,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-13 07:40:35,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:40:35,846 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| 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) [2021-10-13 07:40:35,849 INFO L168 Benchmark]: Toolchain (without parser) took 5249.90 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.7 MB in the beginning and 74.9 MB in the end (delta: -18.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,850 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 73.3 MB in the end (delta: 143.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:40:35,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.49 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.6 MB in the beginning and 100.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 123.7 MB. Free memory was 100.2 MB in the beginning and 98.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,852 INFO L168 Benchmark]: Boogie Preprocessor took 21.80 ms. Allocated memory is still 123.7 MB. Free memory was 98.8 MB in the beginning and 97.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,853 INFO L168 Benchmark]: RCFGBuilder took 541.39 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 85.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,853 INFO L168 Benchmark]: TraceAbstraction took 4389.97 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 74.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:40:35,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 73.3 MB in the end (delta: 143.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.49 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 56.6 MB in the beginning and 100.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 123.7 MB. Free memory was 100.2 MB in the beginning and 98.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.80 ms. Allocated memory is still 123.7 MB. Free memory was 98.8 MB in the beginning and 97.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 541.39 ms. Allocated memory is still 123.7 MB. Free memory was 97.6 MB in the beginning and 85.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4389.97 ms. Allocated memory is still 123.7 MB. Free memory was 84.6 MB in the beginning and 74.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: 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. [2021-10-13 07:40:35,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:40:38,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:40:38,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:40:38,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:40:38,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:40:38,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:40:38,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:40:38,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:40:38,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:40:38,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:40:38,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:40:38,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:40:38,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:40:38,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:40:38,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:40:38,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:40:38,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:40:38,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:40:38,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:40:38,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:40:38,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:40:38,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:40:38,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:40:38,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:40:38,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:40:38,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:40:38,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:40:38,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:40:38,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:40:38,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:40:38,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:40:38,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:40:38,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:40:38,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:40:38,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:40:38,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:40:38,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:40:38,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:40:38,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:40:38,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:40:38,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:40:38,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:40:38,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:40:38,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:40:38,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:40:38,390 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:40:38,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:40:38,391 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:40:38,393 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:40:38,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:40:38,393 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:40:38,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:40:38,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:40:38,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:40:38,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:40:38,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:40:38,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:40:38,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:40:38,398 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:40:38,398 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:40:38,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:40:38,398 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:40:38,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:40:38,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:40:38,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:40:38,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:40:38,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:40:38,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:40:38,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:38,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:40:38,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:40:38,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:40:38,401 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:40:38,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:40:38,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:40:38,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:40:38,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:40:38,402 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_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d2afa409951165ba4b0317a5ac755d680981dee [2021-10-13 07:40:38,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:40:38,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:40:38,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:40:38,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:40:38,802 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:40:38,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-10-13 07:40:38,875 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/63a24c32a/30d1ac39d6a046fbba9bdee31894c7dd/FLAG51a842747 [2021-10-13 07:40:39,406 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:40:39,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2021-10-13 07:40:39,415 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/63a24c32a/30d1ac39d6a046fbba9bdee31894c7dd/FLAG51a842747 [2021-10-13 07:40:39,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/data/63a24c32a/30d1ac39d6a046fbba9bdee31894c7dd [2021-10-13 07:40:39,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:40:39,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:40:39,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:39,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:40:39,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:40:39,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:39" (1/1) ... [2021-10-13 07:40:39,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dda0576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:39, skipping insertion in model container [2021-10-13 07:40:39,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:39" (1/1) ... [2021-10-13 07:40:39,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:40:39,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:40:39,952 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_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-10-13 07:40:39,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:39,983 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:40:39,996 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_d6f05410-9f1d-4540-be3a-2192821c4b59/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2021-10-13 07:40:40,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:40:40,043 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:40:40,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40 WrapperNode [2021-10-13 07:40:40,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:40:40,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:40,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:40:40,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:40:40,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:40:40,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:40:40,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:40:40,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:40:40,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:40:40,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:40:40,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:40:40,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:40:40,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (1/1) ... [2021-10-13 07:40:40,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:40:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:40:40,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:40:40,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:40:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:40:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:40:40,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:40:40,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:40:41,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:40:41,556 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 07:40:41,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:41 BoogieIcfgContainer [2021-10-13 07:40:41,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:40:41,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:40:41,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:40:41,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:40:41,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:39" (1/3) ... [2021-10-13 07:40:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cce969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:41, skipping insertion in model container [2021-10-13 07:40:41,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:40" (2/3) ... [2021-10-13 07:40:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cce969e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:41, skipping insertion in model container [2021-10-13 07:40:41,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:41" (3/3) ... [2021-10-13 07:40:41,566 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2021-10-13 07:40:41,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:40:41,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:40:41,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:40:41,620 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 [2021-10-13 07:40:41,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:40:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 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) [2021-10-13 07:40:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:40:41,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:41,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:41,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 07:40:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:41,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336273644] [2021-10-13 07:40:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:41,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:41,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:41,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:40:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:41,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:40:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:42,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:42,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:42,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336273644] [2021-10-13 07:40:42,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336273644] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:42,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:42,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:40:42,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544568092] [2021-10-13 07:40:42,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:40:42,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:42,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:40:42,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:42,148 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 07:40:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:40:42,162 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-13 07:40:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:40:42,163 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-13 07:40:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:40:42,169 INFO L225 Difference]: With dead ends: 43 [2021-10-13 07:40:42,170 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:40:42,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:40:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:40:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 07:40:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 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) [2021-10-13 07:40:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 07:40:42,202 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-13 07:40:42,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:40:42,202 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 07:40:42,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 07:40:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 07:40:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:40:42,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:40:42,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:40:42,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:40:42,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:40:42,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:40:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:40:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 07:40:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:40:42,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688241253] [2021-10-13 07:40:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:40:42,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:40:42,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:40:42,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:40:42,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:40:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:40:42,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:40:42,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:40:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:42,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:40:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:40:47,457 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:40:47,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688241253] [2021-10-13 07:40:47,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688241253] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:40:47,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:40:47,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:40:47,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418979785] [2021-10-13 07:40:47,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:40:47,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:40:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:40:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:40:47,461 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-10-13 07:41:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:00,564 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-13 07:41:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:41:00,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Word has length 9 [2021-10-13 07:41:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:00,609 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:41:00,610 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 07:41:00,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7605.8ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 07:41:00,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-13 07:41:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-10-13 07:41:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 07:41:00,618 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2021-10-13 07:41:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:00,619 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 07:41:00,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-10-13 07:41:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 07:41:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:41:00,620 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:00,621 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:00,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:00,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:00,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:00,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:00,822 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 1 times [2021-10-13 07:41:00,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:00,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393476898] [2021-10-13 07:41:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:00,824 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:00,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:00,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:00,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:41:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:01,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:41:01,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:02,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:02,959 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:02,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393476898] [2021-10-13 07:41:02,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393476898] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:41:02,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:41:02,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-10-13 07:41:02,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30697193] [2021-10-13 07:41:02,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:02,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:02,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:41:02,963 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-13 07:41:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:03,859 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-10-13 07:41:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:41:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 [2021-10-13 07:41:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:03,875 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:41:03,875 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:41:03,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 709.1ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:41:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:41:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 07:41:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2021-10-13 07:41:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2021-10-13 07:41:03,881 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 15 [2021-10-13 07:41:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:03,881 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2021-10-13 07:41:03,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2021-10-13 07:41:03,881 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2021-10-13 07:41:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:41:03,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:03,882 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:03,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:04,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:04,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:41:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:04,101 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-10-13 07:41:04,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:04,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633501162] [2021-10-13 07:41:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:04,102 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:04,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:04,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:04,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:41:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:04,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:41:04,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:05,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:14,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:14,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633501162] [2021-10-13 07:41:14,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633501162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:14,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [988964690] [2021-10-13 07:41:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:14,632 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:41:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:41:14,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:41:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:41:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:15,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:41:15,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:16,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:24,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [988964690] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:24,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133095828] [2021-10-13 07:41:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:24,176 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:24,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:24,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:41:24,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:41:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:24,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 07:41:24,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:25,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:32,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133095828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:41:32,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:41:32,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 8, 9] total 19 [2021-10-13 07:41:32,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413949783] [2021-10-13 07:41:32,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 07:41:32,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:32,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 07:41:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:41:32,355 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-10-13 07:41:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:36,888 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-10-13 07:41:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:36,889 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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 17 [2021-10-13 07:41:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:36,890 INFO L225 Difference]: With dead ends: 18 [2021-10-13 07:41:36,890 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:41:36,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 14266.9ms TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2021-10-13 07:41:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:41:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:41:36,892 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) [2021-10-13 07:41:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:41:36,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-13 07:41:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:36,893 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:41:36,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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) [2021-10-13 07:41:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:41:36,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:41:36,896 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:36,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:36,898 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:36,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:37,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:41:37,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:37,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:41:37,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:41:37,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:37,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:37,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:37,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:37,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:41:43,397 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-10-13 07:41:49,677 WARN L207 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-10-13 07:41:49,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-10-13 07:41:49,921 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:41:49,922 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:41:49,922 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:41:49,922 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse3 (bvsle .cse2 (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~c~0) (= .cse0 ULTIMATE.start_main_~x~0) .cse1 (bvsge .cse2 (_ bv0 32)) .cse3) (let ((.cse4 (bvadd .cse0 ((_ sign_extend 32) (_ bv1 32))))) (and (= ULTIMATE.start_main_~y~0 .cse4) .cse1 (= ULTIMATE.start_main_~c~0 .cse4) (= .cse0 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse3 (bvslt .cse0 ((_ sign_extend 32) .cse2))))))) [2021-10-13 07:41:49,922 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-13 07:41:49,923 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:41:49,923 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-10-13 07:41:49,923 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:41:49,923 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:41:49,923 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:41:49,923 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse3 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse4 (bvsle .cse2 (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~c~0) (= .cse0 ULTIMATE.start_main_~x~0) .cse1 (bvsge .cse2 (_ bv0 32)) .cse3 .cse4) (let ((.cse5 (bvadd .cse0 ((_ sign_extend 32) (_ bv1 32))))) (and (= ULTIMATE.start_main_~y~0 .cse5) .cse1 (= ULTIMATE.start_main_~c~0 .cse5) (= .cse0 (bvadd (bvmul ((_ sign_extend 32) (_ bv4294967294 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv12 32)) ULTIMATE.start_main_~x~0) (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvneg (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv5 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg (bvmul (bvmul (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)))) .cse3 .cse4 (bvslt .cse0 ((_ sign_extend 32) .cse2))))))) [2021-10-13 07:41:49,924 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:41:49,924 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 07:41:49,924 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-10-13 07:41:49,924 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv0 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (let ((.cse1 (bvadd .cse0 ((_ sign_extend 32) (_ bv1 32)))) (.cse2 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (and (= ULTIMATE.start_main_~y~0 .cse1) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~c~0 .cse1) (bvsle .cse2 (_ bv1 32)) (bvslt .cse0 ((_ sign_extend 32) .cse2)))))) [2021-10-13 07:41:49,924 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:41:49,924 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-13 07:41:49,930 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:41:49,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:41:49 BoogieIcfgContainer [2021-10-13 07:41:49,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:41:49,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:41:49,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:41:49,949 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:41:49,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:41" (3/4) ... [2021-10-13 07:41:49,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:41:49,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 07:41:49,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:41:49,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:41:49,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:41:50,009 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:41:50,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:41:50,011 INFO L168 Benchmark]: Toolchain (without parser) took 70251.03 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 45.3 MB in the beginning and 28.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:50,011 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:50,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.26 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 49.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:50,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 65.0 MB. Free memory was 49.3 MB in the beginning and 47.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:50,013 INFO L168 Benchmark]: Boogie Preprocessor took 54.09 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:50,013 INFO L168 Benchmark]: RCFGBuilder took 1384.50 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 36.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:50,014 INFO L168 Benchmark]: TraceAbstraction took 68388.18 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.7 MB in the beginning and 31.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:50,014 INFO L168 Benchmark]: Witness Printer took 61.66 ms. Allocated memory is still 81.8 MB. Free memory was 31.8 MB in the beginning and 28.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:50,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 65.0 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.26 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 49.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.18 ms. Allocated memory is still 65.0 MB. Free memory was 49.3 MB in the beginning and 47.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.09 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1384.50 ms. Allocated memory is still 65.0 MB. Free memory was 46.4 MB in the beginning and 36.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68388.18 ms. Allocated memory was 65.0 MB in the beginning and 81.8 MB in the end (delta: 16.8 MB). Free memory was 35.7 MB in the beginning and 31.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * Witness Printer took 61.66 ms. Allocated memory is still 81.8 MB. Free memory was 31.8 MB in the beginning and 28.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 68317.1ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 10.5ms, AutomataDifference: 18641.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 12420.9ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 78 SDslu, 58 SDs, 0 SdLazy, 89 SolverSat, 51 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 11125.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 22582.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 250 HoareAnnotationTreeSize, 5 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 106.6ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 12307.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 53.1ms SsaConstructionTime, 2797.2ms SatisfiabilityAnalysisTime, 32607.9ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 3 QuantifiedInterpolants, 1843 SizeOfPredicates, 23 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 11/32 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 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && cond == 1bv32) && ~bvsle32(~sign_extendFrom8To32(k), 1bv32)) || ((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && cond == 1bv32) && ~bvsle32(~sign_extendFrom8To32(k), 1bv32)) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == c) && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) && ~bvsge32(~sign_extendFrom8To32(k), 0bv32)) && ~bvsle32(~sign_extendFrom8To32(k), 1bv32)) || ((((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && cond == 1bv32) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(4294967294bv32), y, y, y, y, y, y), ~bvmul64(~sign_extendFrom8To32(12bv32), x), ~bvmul64(y, y), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(5bv32), y), y), y), y)), ~bvneg32(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~bvmul64(~sign_extendFrom8To32(6bv32), y), y), y), y), y)))) && cond == 1bv32) && ~bvsle32(~sign_extendFrom8To32(k), 1bv32)) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((~sign_extendFrom8To32(0bv32) == y && ~sign_extendFrom8To32(0bv32) == x) && cond == 1bv32) || (((((y == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32)) && cond == 1bv32) && !(cond == 0bv32)) && c == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && ~bvsle32(~sign_extendFrom8To32(k), 1bv32)) && ~bvslt64(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(~sign_extendFrom8To32(k)))) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:41:50,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6f05410-9f1d-4540-be3a-2192821c4b59/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...