./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF --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 64bit --witnessprinter.graph.data.programhash 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:17,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:17,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:17,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:17,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:17,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:17,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:17,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:17,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:17,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:17,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:17,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:17,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:17,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:17,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:17,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:17,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:17,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:17,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:17,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:17,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:17,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:17,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:17,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:17,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:17,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:17,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:17,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:17,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:17,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:17,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:17,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:17,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:17,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:17,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:17,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:17,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:17,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:17,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:17,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:17,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:17,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:41:17,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:17,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:17,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:17,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:17,586 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:17,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:17,587 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:17,588 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:41:17,588 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:17,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:17,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:41:17,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:41:17,589 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:17,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:41:17,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:41:17,591 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:41:17,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:17,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:41:17,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:17,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:17,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:17,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:17,594 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:17,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:17,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:17,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:17,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:17,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:17,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:17,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:17,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:17,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:17,596 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:41:17,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:41:17,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:17,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:17,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:17,597 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-12 22:41:17,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:17,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:17,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:17,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:17,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:17,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 22:41:17,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/e600cd912/7648c2ce3c8c4a96ac50297a7d0001e2/FLAGfe204c821 [2021-11-12 22:41:18,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:18,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 22:41:18,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/e600cd912/7648c2ce3c8c4a96ac50297a7d0001e2/FLAGfe204c821 [2021-11-12 22:41:19,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/e600cd912/7648c2ce3c8c4a96ac50297a7d0001e2 [2021-11-12 22:41:19,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:19,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:19,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:19,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:19,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:19,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:19" (1/1) ... [2021-11-12 22:41:19,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c4c4cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:19, skipping insertion in model container [2021-11-12 22:41:19,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:19" (1/1) ... [2021-11-12 22:41:19,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:19,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:20,218 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-12 22:41:20,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:20,310 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:41:20,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@472d7f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:20, skipping insertion in model container [2021-11-12 22:41:20,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:20,312 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:41:20,313 INFO L158 Benchmark]: Toolchain (without parser) took 1071.92ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 35.6MB in the end (delta: 40.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2021-11-12 22:41:20,314 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 54.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:41:20,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1069.52ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 35.6MB in the end (delta: 40.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2021-11-12 22:41:20,317 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 54.3MB in the beginning and 54.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1069.52ms. Allocated memory is still 102.8MB. Free memory was 75.8MB in the beginning and 35.6MB in the end (delta: 40.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3618]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF --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 64bit --witnessprinter.graph.data.programhash 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:41:22,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:41:22,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:41:22,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:41:22,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:41:22,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:41:22,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:41:22,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:41:22,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:41:22,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:41:22,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:41:22,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:41:22,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:41:22,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:41:22,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:41:22,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:41:22,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:41:22,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:41:22,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:41:22,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:41:22,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:41:22,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:41:22,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:41:22,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:41:22,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:41:22,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:41:22,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:41:22,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:41:22,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:41:22,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:41:22,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:41:22,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:41:22,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:41:22,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:41:22,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:41:22,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:41:22,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:41:22,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:41:22,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:41:22,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:41:22,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:41:22,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:41:22,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:41:22,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:41:22,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:41:22,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:41:22,579 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:41:22,579 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:41:22,579 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:41:22,579 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:41:22,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:41:22,580 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:41:22,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:41:22,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:41:22,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:41:22,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:41:22,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:41:22,583 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:41:22,583 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:41:22,583 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:41:22,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:41:22,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:41:22,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:41:22,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:41:22,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:41:22,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:41:22,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:22,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:41:22,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:41:22,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:41:22,585 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:41:22,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:41:22,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:41:22,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:41:22,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:41:22,586 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07ae4eb392cc9822cbd398c1edf107cccc60d6668bc59dbf5a692a6b9350873b [2021-11-12 22:41:22,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:41:22,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:41:22,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:41:22,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:41:22,978 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:41:22,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 22:41:23,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/d2b3b62eb/06bd78cc6f4a4acc8908610dbdc80121/FLAG042a27006 [2021-11-12 22:41:23,771 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:41:23,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 22:41:23,813 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/d2b3b62eb/06bd78cc6f4a4acc8908610dbdc80121/FLAG042a27006 [2021-11-12 22:41:23,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/data/d2b3b62eb/06bd78cc6f4a4acc8908610dbdc80121 [2021-11-12 22:41:23,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:41:23,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:41:23,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:23,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:41:23,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:41:23,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:23" (1/1) ... [2021-11-12 22:41:23,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f60e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:23, skipping insertion in model container [2021-11-12 22:41:23,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:41:23" (1/1) ... [2021-11-12 22:41:23,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:41:23,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:24,924 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-12 22:41:24,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:25,028 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:41:25,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:41:25,237 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-12 22:41:25,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:25,271 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:41:25,447 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_9b692ca8-8e17-4f08-9df8-ada648c2182c/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113497,113510] [2021-11-12 22:41:25,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:41:25,527 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:41:25,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25 WrapperNode [2021-11-12 22:41:25,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:41:25,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:25,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:41:25,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:41:25,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:41:25,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:41:25,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:41:25,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:41:25,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:41:25,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:41:25,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:41:25,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:41:25,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (1/1) ... [2021-11-12 22:41:25,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:41:25,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:41:25,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:41:25,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:41:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:41:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:41:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:41:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:41:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:41:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:41:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:41:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:41:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:41:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:41:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:41:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:41:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-12 22:41:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-12 22:41:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 22:41:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 22:41:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:41:25,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:41:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2021-11-12 22:41:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2021-11-12 22:41:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-12 22:41:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-12 22:41:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:41:25,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:41:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:41:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:41:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:41:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:41:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:41:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-12 22:41:25,849 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-12 22:41:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-12 22:41:25,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-12 22:41:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2021-11-12 22:41:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2021-11-12 22:41:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:41:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:41:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:41:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:41:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:41:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:41:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:41:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:41:25,852 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:41:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:41:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:41:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:41:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 22:41:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 22:41:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:41:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:41:26,324 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:41:33,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:41:33,682 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:41:33,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:33 BoogieIcfgContainer [2021-11-12 22:41:33,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:41:33,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:41:33,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:41:33,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:41:33,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:41:23" (1/3) ... [2021-11-12 22:41:33,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ce770d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:33, skipping insertion in model container [2021-11-12 22:41:33,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:41:25" (2/3) ... [2021-11-12 22:41:33,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ce770d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:41:33, skipping insertion in model container [2021-11-12 22:41:33,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:41:33" (3/3) ... [2021-11-12 22:41:33,692 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_2a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-12 22:41:33,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:41:33,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:41:33,744 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:41:33,750 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, mAutomataTypeConcurrency=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 [2021-11-12 22:41:33,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:41:33,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 183 states have internal predecessors, (224), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-12 22:41:33,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 22:41:33,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:33,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:33,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1798989029, now seen corresponding path program 1 times [2021-11-12 22:41:33,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:33,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812590484] [2021-11-12 22:41:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:33,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:33,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:33,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:33,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:41:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:34,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:41:34,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:34,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:34,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:34,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812590484] [2021-11-12 22:41:34,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812590484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:34,575 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:34,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:41:34,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084440042] [2021-11-12 22:41:34,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:34,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:41:34,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:41:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:41:34,635 INFO L87 Difference]: Start difference. First operand has 231 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 183 states have internal predecessors, (224), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:34,721 INFO L93 Difference]: Finished difference Result 457 states and 617 transitions. [2021-11-12 22:41:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:41:34,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-11-12 22:41:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:34,738 INFO L225 Difference]: With dead ends: 457 [2021-11-12 22:41:34,738 INFO L226 Difference]: Without dead ends: 220 [2021-11-12 22:41:34,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:41:34,747 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:34,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:41:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-12 22:41:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2021-11-12 22:41:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 172 states have internal predecessors, (212), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-12 22:41:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2021-11-12 22:41:34,819 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 32 [2021-11-12 22:41:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:34,819 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2021-11-12 22:41:34,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2021-11-12 22:41:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 22:41:34,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:34,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:34,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:35,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:35,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1376287203, now seen corresponding path program 1 times [2021-11-12 22:41:35,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:35,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897096233] [2021-11-12 22:41:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:35,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:35,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:35,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:41:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:35,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:35,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:35,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:41:35,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:35,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897096233] [2021-11-12 22:41:35,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897096233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:35,626 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:35,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:41:35,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163220599] [2021-11-12 22:41:35,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:35,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:35,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:35,629 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:36,430 INFO L93 Difference]: Finished difference Result 802 states and 1046 transitions. [2021-11-12 22:41:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:41:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-11-12 22:41:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:36,438 INFO L225 Difference]: With dead ends: 802 [2021-11-12 22:41:36,438 INFO L226 Difference]: Without dead ends: 587 [2021-11-12 22:41:36,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:36,441 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 682 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 629.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.19ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 718.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:36,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 777 Invalid, 162 Unknown, 0 Unchecked, 11.19ms Time], IncrementalHoareTripleChecker [72 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 718.68ms Time] [2021-11-12 22:41:36,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-11-12 22:41:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2021-11-12 22:41:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 445 states have (on average 1.2719101123595506) internal successors, (566), 455 states have internal predecessors, (566), 101 states have call successors, (101), 41 states have call predecessors, (101), 40 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-12 22:41:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 763 transitions. [2021-11-12 22:41:36,535 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 763 transitions. Word has length 32 [2021-11-12 22:41:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:36,536 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 763 transitions. [2021-11-12 22:41:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 22:41:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 763 transitions. [2021-11-12 22:41:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:41:36,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:36,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:36,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:36,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:36,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash 451634024, now seen corresponding path program 1 times [2021-11-12 22:41:36,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:36,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588013090] [2021-11-12 22:41:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:36,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:36,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:36,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:41:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:37,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:41:37,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:37,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:37,346 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:37,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588013090] [2021-11-12 22:41:37,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588013090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:37,346 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:37,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:41:37,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178524700] [2021-11-12 22:41:37,347 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:37,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:37,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:37,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:37,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:37,349 INFO L87 Difference]: Start difference. First operand 587 states and 763 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:41:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:37,699 INFO L93 Difference]: Finished difference Result 1434 states and 1917 transitions. [2021-11-12 22:41:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-12 22:41:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:37,713 INFO L225 Difference]: With dead ends: 1434 [2021-11-12 22:41:37,713 INFO L226 Difference]: Without dead ends: 862 [2021-11-12 22:41:37,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:37,721 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 620 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.01ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 223.47ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:37,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1111 Invalid, 104 Unknown, 0 Unchecked, 9.01ms Time], IncrementalHoareTripleChecker [61 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 223.47ms Time] [2021-11-12 22:41:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-12 22:41:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 590. [2021-11-12 22:41:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 448 states have (on average 1.2678571428571428) internal successors, (568), 458 states have internal predecessors, (568), 101 states have call successors, (101), 41 states have call predecessors, (101), 40 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-12 22:41:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 765 transitions. [2021-11-12 22:41:37,806 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 765 transitions. Word has length 55 [2021-11-12 22:41:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:37,808 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 765 transitions. [2021-11-12 22:41:37,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 22:41:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 765 transitions. [2021-11-12 22:41:37,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:41:37,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:37,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:37,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:38,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:38,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1188950696, now seen corresponding path program 1 times [2021-11-12 22:41:38,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:38,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632982432] [2021-11-12 22:41:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:38,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:38,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:38,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:41:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:38,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:41:38,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:38,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:39,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:39,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632982432] [2021-11-12 22:41:39,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632982432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:39,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:39,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 22:41:39,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947788042] [2021-11-12 22:41:39,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:39,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:39,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:39,266 INFO L87 Difference]: Start difference. First operand 590 states and 765 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:41:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:39,470 INFO L93 Difference]: Finished difference Result 1741 states and 2269 transitions. [2021-11-12 22:41:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:41:39,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 55 [2021-11-12 22:41:39,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:39,481 INFO L225 Difference]: With dead ends: 1741 [2021-11-12 22:41:39,482 INFO L226 Difference]: Without dead ends: 1166 [2021-11-12 22:41:39,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:39,485 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 264 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:39,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 843 Invalid, 31 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 122.27ms Time] [2021-11-12 22:41:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-12 22:41:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1154. [2021-11-12 22:41:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 881 states have (on average 1.264472190692395) internal successors, (1114), 897 states have internal predecessors, (1114), 194 states have call successors, (194), 79 states have call predecessors, (194), 78 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1500 transitions. [2021-11-12 22:41:39,575 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1500 transitions. Word has length 55 [2021-11-12 22:41:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:39,575 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 1500 transitions. [2021-11-12 22:41:39,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:41:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1500 transitions. [2021-11-12 22:41:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 22:41:39,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:39,578 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:39,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:39,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:39,793 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1797229676, now seen corresponding path program 1 times [2021-11-12 22:41:39,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:39,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305340999] [2021-11-12 22:41:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:39,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:39,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:39,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:39,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:41:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:40,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:41:40,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:40,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:40,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:40,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305340999] [2021-11-12 22:41:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305340999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:40,956 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:40,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 22:41:40,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220881482] [2021-11-12 22:41:40,956 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:41:40,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:41:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:40,957 INFO L87 Difference]: Start difference. First operand 1154 states and 1500 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:41:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:41,202 INFO L93 Difference]: Finished difference Result 1156 states and 1501 transitions. [2021-11-12 22:41:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2021-11-12 22:41:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:41,212 INFO L225 Difference]: With dead ends: 1156 [2021-11-12 22:41:41,212 INFO L226 Difference]: Without dead ends: 1153 [2021-11-12 22:41:41,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:41:41,214 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 431 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:41,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 282 Invalid, 71 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [70 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 141.85ms Time] [2021-11-12 22:41:41,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-11-12 22:41:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2021-11-12 22:41:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 881 states have (on average 1.2633371169125993) internal successors, (1113), 896 states have internal predecessors, (1113), 193 states have call successors, (193), 79 states have call predecessors, (193), 78 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1498 transitions. [2021-11-12 22:41:41,307 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1498 transitions. Word has length 56 [2021-11-12 22:41:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:41,308 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1498 transitions. [2021-11-12 22:41:41,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-12 22:41:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1498 transitions. [2021-11-12 22:41:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-12 22:41:41,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:41,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:41,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:41,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:41,525 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 120464171, now seen corresponding path program 1 times [2021-11-12 22:41:41,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:41,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798068] [2021-11-12 22:41:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:41,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:41,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:41:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:41,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:41,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:42,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:42,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:42,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798068] [2021-11-12 22:41:42,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:42,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:42,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 22:41:42,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095421728] [2021-11-12 22:41:42,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:42,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:42,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:42,274 INFO L87 Difference]: Start difference. First operand 1153 states and 1498 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:42,370 INFO L93 Difference]: Finished difference Result 1155 states and 1499 transitions. [2021-11-12 22:41:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2021-11-12 22:41:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:42,379 INFO L225 Difference]: With dead ends: 1155 [2021-11-12 22:41:42,379 INFO L226 Difference]: Without dead ends: 1152 [2021-11-12 22:41:42,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:42,381 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.28ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:42,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 280 Invalid, 1 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.28ms Time] [2021-11-12 22:41:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-12 22:41:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2021-11-12 22:41:42,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 881 states have (on average 1.2622020431328036) internal successors, (1112), 895 states have internal predecessors, (1112), 192 states have call successors, (192), 79 states have call predecessors, (192), 78 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1496 transitions. [2021-11-12 22:41:42,485 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1496 transitions. Word has length 57 [2021-11-12 22:41:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:42,485 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1496 transitions. [2021-11-12 22:41:42,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1496 transitions. [2021-11-12 22:41:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 22:41:42,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:42,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:42,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:41:42,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:42,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:42,706 INFO L85 PathProgramCache]: Analyzing trace with hash -560563849, now seen corresponding path program 1 times [2021-11-12 22:41:42,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:42,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297712784] [2021-11-12 22:41:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:42,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:42,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:42,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:42,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:41:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:43,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:43,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:43,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:43,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297712784] [2021-11-12 22:41:43,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297712784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:43,469 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:43,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 22:41:43,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047489110] [2021-11-12 22:41:43,469 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:43,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:43,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:43,471 INFO L87 Difference]: Start difference. First operand 1152 states and 1496 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:43,550 INFO L93 Difference]: Finished difference Result 1154 states and 1497 transitions. [2021-11-12 22:41:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:43,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2021-11-12 22:41:43,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:43,559 INFO L225 Difference]: With dead ends: 1154 [2021-11-12 22:41:43,559 INFO L226 Difference]: Without dead ends: 1151 [2021-11-12 22:41:43,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:43,561 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 237 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.57ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:43,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 278 Invalid, 1 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.57ms Time] [2021-11-12 22:41:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-11-12 22:41:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1151. [2021-11-12 22:41:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 881 states have (on average 1.2610669693530079) internal successors, (1111), 894 states have internal predecessors, (1111), 191 states have call successors, (191), 79 states have call predecessors, (191), 78 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1494 transitions. [2021-11-12 22:41:43,658 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1494 transitions. Word has length 58 [2021-11-12 22:41:43,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:43,659 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1494 transitions. [2021-11-12 22:41:43,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1494 transitions. [2021-11-12 22:41:43,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 22:41:43,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:43,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:43,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:43,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:43,879 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash -197591122, now seen corresponding path program 1 times [2021-11-12 22:41:43,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:43,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290632264] [2021-11-12 22:41:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:43,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:43,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:43,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:41:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:44,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:44,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:44,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-12 22:41:44,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:44,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290632264] [2021-11-12 22:41:44,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290632264] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:44,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:44,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-12 22:41:44,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880378557] [2021-11-12 22:41:44,574 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:44,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:44,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:44,575 INFO L87 Difference]: Start difference. First operand 1151 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:44,651 INFO L93 Difference]: Finished difference Result 1153 states and 1495 transitions. [2021-11-12 22:41:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2021-11-12 22:41:44,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:44,659 INFO L225 Difference]: With dead ends: 1153 [2021-11-12 22:41:44,659 INFO L226 Difference]: Without dead ends: 1141 [2021-11-12 22:41:44,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:44,661 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 234 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:44,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:41:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-12 22:41:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2021-11-12 22:41:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 872 states have (on average 1.260321100917431) internal successors, (1099), 884 states have internal predecessors, (1099), 190 states have call successors, (190), 79 states have call predecessors, (190), 78 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1481 transitions. [2021-11-12 22:41:44,758 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1481 transitions. Word has length 59 [2021-11-12 22:41:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:44,759 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1481 transitions. [2021-11-12 22:41:44,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:41:44,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1481 transitions. [2021-11-12 22:41:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-12 22:41:44,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:44,788 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:44,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 22:41:45,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:45,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 415459010, now seen corresponding path program 1 times [2021-11-12 22:41:45,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:45,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65057551] [2021-11-12 22:41:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:45,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:45,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:45,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:41:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:45,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:41:45,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 22:41:45,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-12 22:41:46,148 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:46,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65057551] [2021-11-12 22:41:46,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65057551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:46,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:46,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:41:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356028911] [2021-11-12 22:41:46,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:41:46,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:41:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:46,151 INFO L87 Difference]: Start difference. First operand 1141 states and 1481 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:41:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:46,327 INFO L93 Difference]: Finished difference Result 2357 states and 3073 transitions. [2021-11-12 22:41:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:41:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 159 [2021-11-12 22:41:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:46,337 INFO L225 Difference]: With dead ends: 2357 [2021-11-12 22:41:46,337 INFO L226 Difference]: Without dead ends: 1231 [2021-11-12 22:41:46,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:41:46,341 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 41 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.64ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:46,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 533 Invalid, 12 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 82.64ms Time] [2021-11-12 22:41:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2021-11-12 22:41:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1208. [2021-11-12 22:41:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 938 states have (on average 1.2707889125799574) internal successors, (1192), 950 states have internal predecessors, (1192), 190 states have call successors, (190), 80 states have call predecessors, (190), 79 states have return successors, (192), 189 states have call predecessors, (192), 189 states have call successors, (192) [2021-11-12 22:41:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1574 transitions. [2021-11-12 22:41:46,452 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1574 transitions. Word has length 159 [2021-11-12 22:41:46,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:46,452 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1574 transitions. [2021-11-12 22:41:46,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:41:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1574 transitions. [2021-11-12 22:41:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-12 22:41:46,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:46,460 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:46,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:46,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:46,681 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1466528889, now seen corresponding path program 1 times [2021-11-12 22:41:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:46,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245702118] [2021-11-12 22:41:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:46,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:46,684 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:46,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:41:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:47,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:41:47,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 22:41:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 22:41:48,131 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:48,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245702118] [2021-11-12 22:41:48,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245702118] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:48,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:48,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-12 22:41:48,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389552797] [2021-11-12 22:41:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:48,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:48,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:41:48,133 INFO L87 Difference]: Start difference. First operand 1208 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:41:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:48,275 INFO L93 Difference]: Finished difference Result 2421 states and 3171 transitions. [2021-11-12 22:41:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:41:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2021-11-12 22:41:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:48,284 INFO L225 Difference]: With dead ends: 2421 [2021-11-12 22:41:48,285 INFO L226 Difference]: Without dead ends: 1220 [2021-11-12 22:41:48,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:41:48,289 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.26ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:48,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1082 Invalid, 9 Unknown, 0 Unchecked, 4.30ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 31.26ms Time] [2021-11-12 22:41:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-12 22:41:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2021-11-12 22:41:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 944 states have (on average 1.2690677966101696) internal successors, (1198), 962 states have internal predecessors, (1198), 190 states have call successors, (190), 80 states have call predecessors, (190), 85 states have return successors, (210), 189 states have call predecessors, (210), 189 states have call successors, (210) [2021-11-12 22:41:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1598 transitions. [2021-11-12 22:41:48,391 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1598 transitions. Word has length 168 [2021-11-12 22:41:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:48,392 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1598 transitions. [2021-11-12 22:41:48,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 22:41:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1598 transitions. [2021-11-12 22:41:48,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-12 22:41:48,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:48,398 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:48,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:48,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:48,613 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:48,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:48,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1167905577, now seen corresponding path program 1 times [2021-11-12 22:41:48,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:48,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281853371] [2021-11-12 22:41:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:48,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:48,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:48,617 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:48,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:41:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:49,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:41:49,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 22:41:49,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-12 22:41:49,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:49,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281853371] [2021-11-12 22:41:49,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281853371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:49,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:49,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:41:49,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722460635] [2021-11-12 22:41:49,946 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:49,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:41:49,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:41:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:41:49,948 INFO L87 Difference]: Start difference. First operand 1220 states and 1598 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:41:50,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:50,195 INFO L93 Difference]: Finished difference Result 3192 states and 4302 transitions. [2021-11-12 22:41:50,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:41:50,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2021-11-12 22:41:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:50,210 INFO L225 Difference]: With dead ends: 3192 [2021-11-12 22:41:50,211 INFO L226 Difference]: Without dead ends: 1991 [2021-11-12 22:41:50,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:41:50,216 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 333 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:50,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1332 Invalid, 30 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [14 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 89.68ms Time] [2021-11-12 22:41:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2021-11-12 22:41:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1238. [2021-11-12 22:41:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 962 states have (on average 1.264033264033264) internal successors, (1216), 980 states have internal predecessors, (1216), 190 states have call successors, (190), 80 states have call predecessors, (190), 85 states have return successors, (210), 189 states have call predecessors, (210), 189 states have call successors, (210) [2021-11-12 22:41:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1616 transitions. [2021-11-12 22:41:50,376 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1616 transitions. Word has length 174 [2021-11-12 22:41:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:50,377 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1616 transitions. [2021-11-12 22:41:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 22:41:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1616 transitions. [2021-11-12 22:41:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-12 22:41:50,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:50,382 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:50,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:50,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:50,597 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1428729328, now seen corresponding path program 1 times [2021-11-12 22:41:50,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:50,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6653066] [2021-11-12 22:41:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:50,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:50,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:50,599 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:50,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:41:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:41:51,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 22:41:51,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 22:41:51,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-12 22:41:52,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:52,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6653066] [2021-11-12 22:41:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6653066] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:41:52,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:41:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-12 22:41:52,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211536937] [2021-11-12 22:41:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:52,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:41:52,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:41:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:41:52,617 INFO L87 Difference]: Start difference. First operand 1238 states and 1616 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:41:54,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:55,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:41:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:55,923 INFO L93 Difference]: Finished difference Result 3213 states and 4313 transitions. [2021-11-12 22:41:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:41:55,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 176 [2021-11-12 22:41:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:55,937 INFO L225 Difference]: With dead ends: 3213 [2021-11-12 22:41:55,938 INFO L226 Difference]: Without dead ends: 1994 [2021-11-12 22:41:55,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:41:55,942 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 203 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2967.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3031.16ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:55,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 3321 Invalid, 82 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 3031.16ms Time] [2021-11-12 22:41:55,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2021-11-12 22:41:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1286. [2021-11-12 22:41:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1004 states have (on average 1.252988047808765) internal successors, (1258), 1016 states have internal predecessors, (1258), 190 states have call successors, (190), 80 states have call predecessors, (190), 91 states have return successors, (222), 201 states have call predecessors, (222), 189 states have call successors, (222) [2021-11-12 22:41:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1670 transitions. [2021-11-12 22:41:56,108 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1670 transitions. Word has length 176 [2021-11-12 22:41:56,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:56,109 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 1670 transitions. [2021-11-12 22:41:56,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 8 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 22:41:56,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1670 transitions. [2021-11-12 22:41:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-12 22:41:56,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:56,116 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:56,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:56,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:56,337 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:56,338 INFO L85 PathProgramCache]: Analyzing trace with hash 47100754, now seen corresponding path program 2 times [2021-11-12 22:41:56,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:56,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668688581] [2021-11-12 22:41:56,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:41:56,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:56,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:56,341 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:56,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:41:56,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:41:56,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:41:56,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 22:41:56,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:41:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 22:41:57,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:41:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 22:41:57,395 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:41:57,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668688581] [2021-11-12 22:41:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668688581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:41:57,395 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:41:57,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 22:41:57,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776308264] [2021-11-12 22:41:57,396 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:41:57,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:41:57,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:41:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:41:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:41:57,398 INFO L87 Difference]: Start difference. First operand 1286 states and 1670 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:41:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:41:58,925 INFO L93 Difference]: Finished difference Result 2812 states and 3702 transitions. [2021-11-12 22:41:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:41:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 182 [2021-11-12 22:41:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:41:58,935 INFO L225 Difference]: With dead ends: 2812 [2021-11-12 22:41:58,936 INFO L226 Difference]: Without dead ends: 1545 [2021-11-12 22:41:58,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:41:58,940 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 697 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 961.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1084.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:41:58,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2096 Invalid, 191 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [104 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1084.88ms Time] [2021-11-12 22:41:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2021-11-12 22:41:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1286. [2021-11-12 22:41:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1004 states have (on average 1.25) internal successors, (1255), 1016 states have internal predecessors, (1255), 190 states have call successors, (190), 80 states have call predecessors, (190), 91 states have return successors, (222), 201 states have call predecessors, (222), 189 states have call successors, (222) [2021-11-12 22:41:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1667 transitions. [2021-11-12 22:41:59,074 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1667 transitions. Word has length 182 [2021-11-12 22:41:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:41:59,077 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 1667 transitions. [2021-11-12 22:41:59,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 22:41:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1667 transitions. [2021-11-12 22:41:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-12 22:41:59,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:41:59,083 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:41:59,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:41:59,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:41:59,300 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:41:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:41:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2111774586, now seen corresponding path program 1 times [2021-11-12 22:41:59,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:41:59,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051297487] [2021-11-12 22:41:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:41:59,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:41:59,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:41:59,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:41:59,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:42:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 22:42:00,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 22:42:00,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-12 22:42:01,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:01,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051297487] [2021-11-12 22:42:01,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051297487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:01,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145096336] [2021-11-12 22:42:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:01,670 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:42:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:42:01,671 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:42:01,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-12 22:42:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:02,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 22:42:02,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 22:42:02,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-12 22:42:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145096336] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:03,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257517529] [2021-11-12 22:42:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:03,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:42:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:42:03,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:42:03,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-12 22:42:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:42:03,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:04,349 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 22:42:04,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 22:42:04,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257517529] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:42:04,965 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:42:04,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 4, 4] total 20 [2021-11-12 22:42:04,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595570080] [2021-11-12 22:42:04,966 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:42:04,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 22:42:04,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 22:42:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:42:04,969 INFO L87 Difference]: Start difference. First operand 1286 states and 1667 transitions. Second operand has 20 states, 20 states have (on average 17.75) internal successors, (355), 16 states have internal predecessors, (355), 6 states have call successors, (49), 3 states have call predecessors, (49), 7 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2021-11-12 22:42:11,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:13,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:16,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:17,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:19,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:21,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:23,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:42:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:23,914 INFO L93 Difference]: Finished difference Result 10712 states and 14195 transitions. [2021-11-12 22:42:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-12 22:42:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 17.75) internal successors, (355), 16 states have internal predecessors, (355), 6 states have call successors, (49), 3 states have call predecessors, (49), 7 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) Word has length 201 [2021-11-12 22:42:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:23,971 INFO L225 Difference]: With dead ends: 10712 [2021-11-12 22:42:23,972 INFO L226 Difference]: Without dead ends: 9445 [2021-11-12 22:42:23,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2021-11-12 22:42:23,979 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1487 mSDsluCounter, 9418 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 275 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16192.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 10180 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.09ms SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16702.37ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:23,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1501 Valid, 10180 Invalid, 1465 Unknown, 0 Unchecked, 32.09ms Time], IncrementalHoareTripleChecker [275 Valid, 1185 Invalid, 5 Unknown, 0 Unchecked, 16702.37ms Time] [2021-11-12 22:42:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9445 states. [2021-11-12 22:42:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9445 to 7602. [2021-11-12 22:42:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7602 states, 5914 states have (on average 1.25059181602976) internal successors, (7396), 5998 states have internal predecessors, (7396), 1156 states have call successors, (1156), 460 states have call predecessors, (1156), 531 states have return successors, (1389), 1215 states have call predecessors, (1389), 1155 states have call successors, (1389) [2021-11-12 22:42:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7602 states to 7602 states and 9941 transitions. [2021-11-12 22:42:24,719 INFO L78 Accepts]: Start accepts. Automaton has 7602 states and 9941 transitions. Word has length 201 [2021-11-12 22:42:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:24,719 INFO L470 AbstractCegarLoop]: Abstraction has 7602 states and 9941 transitions. [2021-11-12 22:42:24,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.75) internal successors, (355), 16 states have internal predecessors, (355), 6 states have call successors, (49), 3 states have call predecessors, (49), 7 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2021-11-12 22:42:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7602 states and 9941 transitions. [2021-11-12 22:42:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-12 22:42:24,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:24,738 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:24,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:24,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-12 22:42:25,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:25,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:42:25,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1804376794, now seen corresponding path program 1 times [2021-11-12 22:42:25,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:25,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538016521] [2021-11-12 22:42:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:25,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:25,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:25,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:25,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:42:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:26,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:42:26,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-12 22:42:26,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-12 22:42:27,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:27,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538016521] [2021-11-12 22:42:27,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538016521] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:42:27,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:42:27,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-12 22:42:27,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315420180] [2021-11-12 22:42:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:27,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:42:27,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:42:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:42:27,405 INFO L87 Difference]: Start difference. First operand 7602 states and 9941 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:42:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:28,380 INFO L93 Difference]: Finished difference Result 18362 states and 24552 transitions. [2021-11-12 22:42:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 207 [2021-11-12 22:42:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:28,427 INFO L225 Difference]: With dead ends: 18362 [2021-11-12 22:42:28,428 INFO L226 Difference]: Without dead ends: 10779 [2021-11-12 22:42:28,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:42:28,447 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 92 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:28,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1824 Invalid, 23 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 88.61ms Time] [2021-11-12 22:42:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-11-12 22:42:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 7710. [2021-11-12 22:42:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7710 states, 6022 states have (on average 1.2460976419794088) internal successors, (7504), 6070 states have internal predecessors, (7504), 1156 states have call successors, (1156), 460 states have call predecessors, (1156), 531 states have return successors, (1389), 1251 states have call predecessors, (1389), 1155 states have call successors, (1389) [2021-11-12 22:42:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 10049 transitions. [2021-11-12 22:42:29,302 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 10049 transitions. Word has length 207 [2021-11-12 22:42:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:29,303 INFO L470 AbstractCegarLoop]: Abstraction has 7710 states and 10049 transitions. [2021-11-12 22:42:29,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 22:42:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 10049 transitions. [2021-11-12 22:42:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-12 22:42:29,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:29,321 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:29,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:29,546 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1803826936, now seen corresponding path program 2 times [2021-11-12 22:42:29,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:29,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477088876] [2021-11-12 22:42:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:42:29,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:29,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:29,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 22:42:29,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:42:29,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:42:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:42:30,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-12 22:42:30,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-12 22:42:30,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:30,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477088876] [2021-11-12 22:42:30,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477088876] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:30,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:30,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:42:30,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212076600] [2021-11-12 22:42:30,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:30,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:42:30,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:42:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:42:30,622 INFO L87 Difference]: Start difference. First operand 7710 states and 10049 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 22:42:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:31,779 INFO L93 Difference]: Finished difference Result 24433 states and 32062 transitions. [2021-11-12 22:42:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:42:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 213 [2021-11-12 22:42:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:31,834 INFO L225 Difference]: With dead ends: 24433 [2021-11-12 22:42:31,835 INFO L226 Difference]: Without dead ends: 16742 [2021-11-12 22:42:31,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:42:31,857 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 329 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.27ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:31,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 934 Invalid, 18 Unknown, 0 Unchecked, 49.27ms Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 64.60ms Time] [2021-11-12 22:42:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16742 states. [2021-11-12 22:42:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16742 to 7746. [2021-11-12 22:42:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 6058 states have (on average 1.2446351931330473) internal successors, (7540), 6118 states have internal predecessors, (7540), 1156 states have call successors, (1156), 460 states have call predecessors, (1156), 531 states have return successors, (1389), 1239 states have call predecessors, (1389), 1155 states have call successors, (1389) [2021-11-12 22:42:32,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 10085 transitions. [2021-11-12 22:42:32,789 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 10085 transitions. Word has length 213 [2021-11-12 22:42:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:32,790 INFO L470 AbstractCegarLoop]: Abstraction has 7746 states and 10085 transitions. [2021-11-12 22:42:32,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 22:42:32,792 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 10085 transitions. [2021-11-12 22:42:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-12 22:42:32,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:32,811 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:32,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:33,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:33,031 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash -806596076, now seen corresponding path program 1 times [2021-11-12 22:42:33,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:33,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755535507] [2021-11-12 22:42:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:33,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:33,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:33,036 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:33,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 22:42:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:33,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:42:33,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-12 22:42:34,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:42:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-12 22:42:34,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:42:34,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755535507] [2021-11-12 22:42:34,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755535507] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:42:34,863 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:42:34,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:42:34,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805676714] [2021-11-12 22:42:34,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:42:34,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:42:34,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:42:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:42:34,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:34,866 INFO L87 Difference]: Start difference. First operand 7746 states and 10085 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 6 states have internal predecessors, (143), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 22:42:36,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:42:36,504 INFO L93 Difference]: Finished difference Result 25895 states and 35469 transitions. [2021-11-12 22:42:36,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:42:36,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 6 states have internal predecessors, (143), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) Word has length 220 [2021-11-12 22:42:36,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:42:36,564 INFO L225 Difference]: With dead ends: 25895 [2021-11-12 22:42:36,565 INFO L226 Difference]: Without dead ends: 18168 [2021-11-12 22:42:36,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:42:36,586 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 439 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.65ms IncrementalHoareTripleChecker+Time [2021-11-12 22:42:36,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2142 Invalid, 67 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [26 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 233.65ms Time] [2021-11-12 22:42:36,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18168 states. [2021-11-12 22:42:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18168 to 7926. [2021-11-12 22:42:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7926 states, 6202 states have (on average 1.2447597549177685) internal successors, (7720), 6226 states have internal predecessors, (7720), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1425), 1311 states have call predecessors, (1425), 1191 states have call successors, (1425) [2021-11-12 22:42:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7926 states to 7926 states and 10337 transitions. [2021-11-12 22:42:37,599 INFO L78 Accepts]: Start accepts. Automaton has 7926 states and 10337 transitions. Word has length 220 [2021-11-12 22:42:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:42:37,599 INFO L470 AbstractCegarLoop]: Abstraction has 7926 states and 10337 transitions. [2021-11-12 22:42:37,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 6 states have internal predecessors, (143), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 6 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-12 22:42:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7926 states and 10337 transitions. [2021-11-12 22:42:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-12 22:42:37,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:42:37,618 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:42:37,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 22:42:37,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:42:37,833 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:42:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:42:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1194485454, now seen corresponding path program 1 times [2021-11-12 22:42:37,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:42:37,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64286573] [2021-11-12 22:42:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:42:37,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:42:37,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:42:37,837 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:42:37,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b692ca8-8e17-4f08-9df8-ada648c2182c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 22:42:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:42:41,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-12 22:42:41,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:42:41,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 22:42:41,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-12 22:42:42,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2021-11-12 22:42:44,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-12 22:42:44,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2021-11-12 22:42:45,218 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-12 22:42:45,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 45 [2021-11-12 22:42:45,248 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-12 22:42:45,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2021-11-12 22:42:46,105 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:42:46,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2021-11-12 22:42:56,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-12 22:44:47,337 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-12 22:44:47,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 67 [2021-11-12 22:44:55,279 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-12 22:44:55,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 62 [2021-11-12 22:44:59,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-12 22:46:55,335 INFO L354 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2021-11-12 22:46:55,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 80 treesize of output 107 [2021-11-12 22:46:56,402 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-12 22:46:56,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 99 [2021-11-12 22:47:02,845 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc68.base| (_ BitVec 64)) (|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_1| (_ BitVec 64))) (let ((.cse0 ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8)))) (and (= (select |c_#memory_int| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_1|) .cse0) (not (= |ldv_init_zalloc_#t~malloc68.base| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_1|)) (= .cse0 (select |c_#memory_int| |ldv_init_zalloc_#t~malloc68.base|))))) is different from true [2021-11-12 22:47:13,858 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-12 22:47:13,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 115 treesize of output 121 [2021-11-12 22:47:29,071 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ldv_init_zalloc_#t~malloc68.base_114| (_ BitVec 64)) (|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_6| (_ BitVec 64))) (let ((.cse0 ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8)))) (and (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_6|)) (= (select |c_#memory_int| |v_ldv_init_zalloc_#t~malloc68.base_114|) .cse0) (not (= |v_ldv_init_zalloc_#t~malloc68.base_114| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_6|))))) is different from true [2021-11-12 22:47:31,892 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-12 22:47:31,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2021-11-12 22:47:31,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-12 22:47:34,057 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_7| (_ BitVec 64)) (|v_ldv_init_zalloc_#t~malloc68.base_114| (_ BitVec 64))) (let ((.cse0 ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8)))) (and (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_7|)) (not (= |v_ldv_init_zalloc_#t~malloc68.base_114| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_7|)) (= (select |c_#memory_int| |v_ldv_init_zalloc_#t~malloc68.base_114|) .cse0)))) is different from true [2021-11-12 22:47:36,817 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ldv_init_zalloc_#t~malloc68.base_114| (_ BitVec 64)) (|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_8| (_ BitVec 64))) (let ((.cse0 ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8)))) (and (= (select |c_#memory_int| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_8|) .cse0) (= (select |c_#memory_int| |v_ldv_init_zalloc_#t~malloc68.base_114|) .cse0) (not (= |v_ldv_init_zalloc_#t~malloc68.base_114| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_8|))))) is different from true [2021-11-12 22:47:39,790 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-12 22:47:39,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 47 [2021-11-12 22:47:39,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-11-12 22:47:39,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:39,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-12 22:47:39,954 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-12 22:47:39,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 60 [2021-11-12 22:47:39,989 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-12 22:47:39,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2021-11-12 22:47:44,520 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_ldv_init_zalloc_#t~malloc68.base_114| (_ BitVec 64))) (let ((.cse0 ((as const (Array (_ BitVec 64) (_ BitVec 8))) (_ bv0 8)))) (and (= (select |c_#memory_int| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_9|) .cse0) (= (select |c_#memory_int| |v_ldv_init_zalloc_#t~malloc68.base_114|) .cse0) (not (= |v_ldv_init_zalloc_#t~malloc68.base_114| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_9|))))) is different from true [2021-11-12 22:47:46,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:46,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3779 [2021-11-12 22:47:46,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:47:46,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4139