./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:39,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:39,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:39,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:39,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:39,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:39,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:39,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:39,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:39,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:39,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:39,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:39,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:39,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:39,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:39,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:39,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:39,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:39,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:39,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:39,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:39,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:39,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:39,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:39,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:39,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:39,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:39,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:39,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:39,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:39,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:39,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:39,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:39,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:39,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:39,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:39,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:39,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:39,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:39,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:39,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:39,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 02:38:39,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:39,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:39,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:39,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:39,597 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:39,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:39,598 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:39,598 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:38:39,604 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:39,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:39,606 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:38:39,606 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:38:39,606 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:39,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:38:39,607 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:38:39,607 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:38:39,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:39,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:38:39,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:39,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:39,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:39,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:39,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:39,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:39,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:39,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:39,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:39,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:39,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:39,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:39,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:39,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:39,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:38:39,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:38:39,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:39,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:39,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:39,613 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b [2021-11-13 02:38:39,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:39,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:39,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:39,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:39,899 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:39,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 02:38:39,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/6e6fc1cec/74228182df404d718d6ab565de8958d2/FLAG490415206 [2021-11-13 02:38:40,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:40,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 02:38:40,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/6e6fc1cec/74228182df404d718d6ab565de8958d2/FLAG490415206 [2021-11-13 02:38:41,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/6e6fc1cec/74228182df404d718d6ab565de8958d2 [2021-11-13 02:38:41,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:41,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:41,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:41,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:41,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:41,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:41" (1/1) ... [2021-11-13 02:38:41,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d5d6e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:41, skipping insertion in model container [2021-11-13 02:38:41,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:41" (1/1) ... [2021-11-13 02:38:41,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:41,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:42,369 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-13 02:38:42,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:42,430 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) [2021-11-13 02:38:42,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@493e49ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:42, skipping insertion in model container [2021-11-13 02:38:42,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:42,431 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:38:42,432 INFO L158 Benchmark]: Toolchain (without parser) took 950.19ms. Allocated memory is still 111.1MB. Free memory was 71.1MB in the beginning and 60.3MB in the end (delta: 10.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:38:42,433 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 85.1MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:38:42,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 947.16ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 60.3MB in the end (delta: 10.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:38:42,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 85.1MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 947.16ms. Allocated memory is still 111.1MB. Free memory was 70.9MB in the beginning and 60.3MB in the end (delta: 10.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3621]: 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:38:44,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:38:44,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:38:44,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:38:44,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:38:44,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:38:44,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:38:44,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:38:44,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:38:44,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:38:44,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:38:44,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:38:44,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:38:45,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:38:45,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:38:45,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:38:45,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:38:45,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:38:45,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:38:45,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:38:45,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:38:45,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:38:45,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:38:45,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:38:45,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:38:45,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:38:45,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:38:45,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:38:45,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:38:45,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:38:45,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:38:45,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:38:45,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:38:45,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:38:45,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:38:45,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:38:45,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:38:45,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:38:45,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:38:45,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:38:45,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:38:45,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 02:38:45,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:38:45,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:38:45,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:38:45,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:38:45,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:38:45,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:38:45,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:38:45,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:38:45,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:38:45,125 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:38:45,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:38:45,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:38:45,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:38:45,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:38:45,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:38:45,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:38:45,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:38:45,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:38:45,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:38:45,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:38:45,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:38:45,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:38:45,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:38:45,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:38:45,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:45,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:38:45,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:38:45,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:38:45,133 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:38:45,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:38:45,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:38:45,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:38:45,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:38:45,134 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b [2021-11-13 02:38:45,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:38:45,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:38:45,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:38:45,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:38:45,592 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:38:45,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 02:38:45,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/49efc8310/94a6a65284274df4b0e515fd5d51e6a1/FLAGbe3696d46 [2021-11-13 02:38:46,525 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:38:46,526 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 02:38:46,566 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/49efc8310/94a6a65284274df4b0e515fd5d51e6a1/FLAGbe3696d46 [2021-11-13 02:38:46,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/data/49efc8310/94a6a65284274df4b0e515fd5d51e6a1 [2021-11-13 02:38:46,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:38:46,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:38:46,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:46,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:38:46,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:38:46,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:46" (1/1) ... [2021-11-13 02:38:46,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624f9398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:46, skipping insertion in model container [2021-11-13 02:38:46,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:38:46" (1/1) ... [2021-11-13 02:38:46,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:38:46,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:47,540 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-13 02:38:47,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:47,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:38:47,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:38:47,774 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-13 02:38:47,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:47,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:38:48,004 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_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-11-13 02:38:48,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:38:48,087 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:38:48,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48 WrapperNode [2021-11-13 02:38:48,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:38:48,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:48,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:38:48,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:38:48,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:38:48,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:38:48,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:38:48,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:38:48,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:38:48,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:38:48,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:38:48,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:38:48,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (1/1) ... [2021-11-13 02:38:48,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:38:48,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:38:48,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:38:48,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:38:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 02:38:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 02:38:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:38:48,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 02:38:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 02:38:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 02:38:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 02:38:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 02:38:48,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 02:38:48,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 02:38:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 02:38:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 02:38:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-13 02:38:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-13 02:38:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 02:38:48,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 02:38:48,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 02:38:48,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 02:38:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2021-11-13 02:38:48,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2021-11-13 02:38:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 02:38:48,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 02:38:48,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 02:38:48,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 02:38:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 02:38:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 02:38:48,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 02:38:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 02:38:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:38:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-13 02:38:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-13 02:38:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-11-13 02:38:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-11-13 02:38:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2021-11-13 02:38:48,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2021-11-13 02:38:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 02:38:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 02:38:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 02:38:48,565 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 02:38:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:38:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 02:38:48,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 02:38:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 02:38:48,566 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 02:38:48,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:38:48,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:38:49,201 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 02:38:56,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:38:56,737 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 02:38:56,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:56 BoogieIcfgContainer [2021-11-13 02:38:56,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:38:56,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:38:56,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:38:56,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:38:56,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:38:46" (1/3) ... [2021-11-13 02:38:56,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5267a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:56, skipping insertion in model container [2021-11-13 02:38:56,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:38:48" (2/3) ... [2021-11-13 02:38:56,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5267a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:38:56, skipping insertion in model container [2021-11-13 02:38:56,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:38:56" (3/3) ... [2021-11-13 02:38:56,750 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-13 02:38:56,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:38:56,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:38:56,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:38:56,822 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 [2021-11-13 02:38:56,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:38:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 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) [2021-11-13 02:38:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-13 02:38:56,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:56,860 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] [2021-11-13 02:38:56,861 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1664570800, now seen corresponding path program 1 times [2021-11-13 02:38:56,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:56,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355929025] [2021-11-13 02:38:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:56,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:56,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:56,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:38:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:57,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:38:57,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:57,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:57,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:57,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355929025] [2021-11-13 02:38:57,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355929025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:57,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:57,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:38:57,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693822302] [2021-11-13 02:38:57,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:57,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:38:57,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:57,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:38:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:38:57,866 INFO L87 Difference]: Start difference. First operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 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) [2021-11-13 02:38:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:57,972 INFO L93 Difference]: Finished difference Result 461 states and 624 transitions. [2021-11-13 02:38:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:38:57,976 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 [2021-11-13 02:38:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:57,997 INFO L225 Difference]: With dead ends: 461 [2021-11-13 02:38:57,997 INFO L226 Difference]: Without dead ends: 222 [2021-11-13 02:38:58,009 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 [2021-11-13 02:38:58,014 INFO L933 BasicCegarLoop]: 302 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, 302 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:58,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 8.54ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:38:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-13 02:38:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-13 02:38:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 168 states have (on average 1.2797619047619047) internal successors, (215), 173 states have internal predecessors, (215), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-13 02:38:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 289 transitions. [2021-11-13 02:38:58,092 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 289 transitions. Word has length 32 [2021-11-13 02:38:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:38:58,092 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 289 transitions. [2021-11-13 02:38:58,092 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) [2021-11-13 02:38:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 289 transitions. [2021-11-13 02:38:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-13 02:38:58,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:38:58,095 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] [2021-11-13 02:38:58,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:38:58,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:38:58,311 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:38:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:38:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1241868974, now seen corresponding path program 1 times [2021-11-13 02:38:58,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:38:58,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918492374] [2021-11-13 02:38:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:38:58,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:38:58,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:38:58,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:38:58,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:38:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:38:58,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:38:58,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:38:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:58,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:38:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:38:59,035 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:38:59,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918492374] [2021-11-13 02:38:59,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918492374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:59,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:38:59,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 02:38:59,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604061084] [2021-11-13 02:38:59,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:59,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:38:59,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:38:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:38:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:38:59,040 INFO L87 Difference]: Start difference. First operand 222 states and 289 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) [2021-11-13 02:38:59,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:38:59,914 INFO L93 Difference]: Finished difference Result 814 states and 1068 transitions. [2021-11-13 02:38:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:38:59,916 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 [2021-11-13 02:38:59,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:38:59,927 INFO L225 Difference]: With dead ends: 814 [2021-11-13 02:38:59,927 INFO L226 Difference]: Without dead ends: 597 [2021-11-13 02:38:59,929 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 [2021-11-13 02:38:59,933 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 518 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 667.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 778.24ms IncrementalHoareTripleChecker+Time [2021-11-13 02:38:59,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1029 Invalid, 103 Unknown, 0 Unchecked, 12.71ms Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 778.24ms Time] [2021-11-13 02:38:59,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-13 02:39:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2021-11-13 02:39:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 453 states have (on average 1.2781456953642385) internal successors, (579), 462 states have internal predecessors, (579), 103 states have call successors, (103), 41 states have call predecessors, (103), 40 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 02:39:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 781 transitions. [2021-11-13 02:39:00,017 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 781 transitions. Word has length 32 [2021-11-13 02:39:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:00,017 INFO L470 AbstractCegarLoop]: Abstraction has 597 states and 781 transitions. [2021-11-13 02:39:00,018 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) [2021-11-13 02:39:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 781 transitions. [2021-11-13 02:39:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 02:39:00,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:00,021 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] [2021-11-13 02:39:00,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:00,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:00,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1658921169, now seen corresponding path program 1 times [2021-11-13 02:39:00,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:00,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78843127] [2021-11-13 02:39:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:00,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:00,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:00,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:00,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:39:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:00,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:00,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:00,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:00,941 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:00,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78843127] [2021-11-13 02:39:00,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78843127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:00,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:00,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 02:39:00,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183521969] [2021-11-13 02:39:00,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:00,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:00,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:00,949 INFO L87 Difference]: Start difference. First operand 597 states and 781 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) [2021-11-13 02:39:01,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:01,376 INFO L93 Difference]: Finished difference Result 1454 states and 1955 transitions. [2021-11-13 02:39:01,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:39:01,377 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 [2021-11-13 02:39:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:01,392 INFO L225 Difference]: With dead ends: 1454 [2021-11-13 02:39:01,392 INFO L226 Difference]: Without dead ends: 872 [2021-11-13 02:39:01,395 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 [2021-11-13 02:39:01,399 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 623 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.42ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 300.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:01,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 1116 Invalid, 106 Unknown, 0 Unchecked, 10.42ms Time], IncrementalHoareTripleChecker [62 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 300.00ms Time] [2021-11-13 02:39:01,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-11-13 02:39:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 600. [2021-11-13 02:39:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 456 states have (on average 1.2741228070175439) internal successors, (581), 465 states have internal predecessors, (581), 103 states have call successors, (103), 41 states have call predecessors, (103), 40 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 02:39:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 783 transitions. [2021-11-13 02:39:01,510 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 783 transitions. Word has length 55 [2021-11-13 02:39:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:01,511 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 783 transitions. [2021-11-13 02:39:01,512 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) [2021-11-13 02:39:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 783 transitions. [2021-11-13 02:39:01,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-13 02:39:01,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:01,521 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] [2021-11-13 02:39:01,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:01,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:01,722 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:01,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1898729455, now seen corresponding path program 1 times [2021-11-13 02:39:01,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:01,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112021378] [2021-11-13 02:39:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:01,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:01,731 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:01,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:39:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:02,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:02,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:02,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:02,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:02,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112021378] [2021-11-13 02:39:02,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112021378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:02,650 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:02,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 02:39:02,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152602736] [2021-11-13 02:39:02,657 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:02,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:02,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:02,661 INFO L87 Difference]: Start difference. First operand 600 states and 783 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-13 02:39:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:02,783 INFO L93 Difference]: Finished difference Result 1763 states and 2311 transitions. [2021-11-13 02:39:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:02,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 55 [2021-11-13 02:39:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:02,797 INFO L225 Difference]: With dead ends: 1763 [2021-11-13 02:39:02,797 INFO L226 Difference]: Without dead ends: 1178 [2021-11-13 02:39:02,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:02,802 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 245 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.06ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:02,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 659 Invalid, 13 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 29.06ms Time] [2021-11-13 02:39:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-11-13 02:39:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2021-11-13 02:39:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 898 states have (on average 1.2683741648106903) internal successors, (1139), 913 states have internal predecessors, (1139), 199 states have call successors, (199), 79 states have call predecessors, (199), 78 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-13 02:39:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1533 transitions. [2021-11-13 02:39:02,935 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1533 transitions. Word has length 55 [2021-11-13 02:39:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:02,936 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1533 transitions. [2021-11-13 02:39:02,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-13 02:39:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1533 transitions. [2021-11-13 02:39:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 02:39:02,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:02,940 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] [2021-11-13 02:39:02,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:03,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:03,156 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:03,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:03,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1268938597, now seen corresponding path program 1 times [2021-11-13 02:39:03,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:03,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371588720] [2021-11-13 02:39:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:03,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:03,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:03,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:03,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:39:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:03,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:03,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:03,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:04,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:04,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371588720] [2021-11-13 02:39:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371588720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:04,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:04,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 02:39:04,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881599645] [2021-11-13 02:39:04,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:04,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:04,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:04,033 INFO L87 Difference]: Start difference. First operand 1176 states and 1533 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-13 02:39:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:04,121 INFO L93 Difference]: Finished difference Result 1178 states and 1534 transitions. [2021-11-13 02:39:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:04,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 56 [2021-11-13 02:39:04,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:04,129 INFO L225 Difference]: With dead ends: 1178 [2021-11-13 02:39:04,129 INFO L226 Difference]: Without dead ends: 1175 [2021-11-13 02:39:04,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:04,131 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 247 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:04,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 286 Invalid, 1 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.89ms Time] [2021-11-13 02:39:04,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-11-13 02:39:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2021-11-13 02:39:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 898 states have (on average 1.2672605790645879) internal successors, (1138), 912 states have internal predecessors, (1138), 198 states have call successors, (198), 79 states have call predecessors, (198), 78 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-13 02:39:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1531 transitions. [2021-11-13 02:39:04,224 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1531 transitions. Word has length 56 [2021-11-13 02:39:04,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:04,224 INFO L470 AbstractCegarLoop]: Abstraction has 1175 states and 1531 transitions. [2021-11-13 02:39:04,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-13 02:39:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1531 transitions. [2021-11-13 02:39:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 02:39:04,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:04,226 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] [2021-11-13 02:39:04,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:04,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:04,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 682405268, now seen corresponding path program 1 times [2021-11-13 02:39:04,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:04,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889745176] [2021-11-13 02:39:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:04,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:04,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:04,442 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:04,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:39:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:04,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:04,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:05,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:05,328 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:05,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889745176] [2021-11-13 02:39:05,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889745176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:05,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:05,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 02:39:05,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862831917] [2021-11-13 02:39:05,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:05,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:05,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:05,330 INFO L87 Difference]: Start difference. First operand 1175 states and 1531 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) [2021-11-13 02:39:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:05,418 INFO L93 Difference]: Finished difference Result 1177 states and 1532 transitions. [2021-11-13 02:39:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:05,419 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 [2021-11-13 02:39:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:05,428 INFO L225 Difference]: With dead ends: 1177 [2021-11-13 02:39:05,429 INFO L226 Difference]: Without dead ends: 1174 [2021-11-13 02:39:05,430 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 [2021-11-13 02:39:05,431 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.40ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:05,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 284 Invalid, 1 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.40ms Time] [2021-11-13 02:39:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-11-13 02:39:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2021-11-13 02:39:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 898 states have (on average 1.2661469933184855) internal successors, (1137), 911 states have internal predecessors, (1137), 197 states have call successors, (197), 79 states have call predecessors, (197), 78 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-13 02:39:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1529 transitions. [2021-11-13 02:39:05,545 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1529 transitions. Word has length 57 [2021-11-13 02:39:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:05,546 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1529 transitions. [2021-11-13 02:39:05,548 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) [2021-11-13 02:39:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1529 transitions. [2021-11-13 02:39:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-13 02:39:05,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:05,550 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] [2021-11-13 02:39:05,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:05,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:05,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash -320253880, now seen corresponding path program 1 times [2021-11-13 02:39:05,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:05,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565836456] [2021-11-13 02:39:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:05,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:05,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:05,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:39:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:06,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:06,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:06,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-13 02:39:06,500 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:06,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565836456] [2021-11-13 02:39:06,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565836456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:06,500 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:06,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2021-11-13 02:39:06,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440755107] [2021-11-13 02:39:06,501 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:06,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:06,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:06,502 INFO L87 Difference]: Start difference. First operand 1174 states and 1529 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) [2021-11-13 02:39:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:06,588 INFO L93 Difference]: Finished difference Result 1176 states and 1530 transitions. [2021-11-13 02:39:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:06,588 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 [2021-11-13 02:39:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:06,598 INFO L225 Difference]: With dead ends: 1176 [2021-11-13 02:39:06,598 INFO L226 Difference]: Without dead ends: 1165 [2021-11-13 02:39:06,599 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 [2021-11-13 02:39:06,600 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 241 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:06,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:39:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-13 02:39:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-13 02:39:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 890 states have (on average 1.2651685393258427) internal successors, (1126), 902 states have internal predecessors, (1126), 196 states have call successors, (196), 79 states have call predecessors, (196), 78 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-13 02:39:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1517 transitions. [2021-11-13 02:39:06,721 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1517 transitions. Word has length 58 [2021-11-13 02:39:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:06,722 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1517 transitions. [2021-11-13 02:39:06,722 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) [2021-11-13 02:39:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1517 transitions. [2021-11-13 02:39:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-13 02:39:06,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:06,735 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] [2021-11-13 02:39:06,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:06,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:06,952 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1089358151, now seen corresponding path program 1 times [2021-11-13 02:39:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:06,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285130511] [2021-11-13 02:39:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:06,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:06,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:07,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:39:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:07,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:39:07,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 02:39:08,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 02:39:08,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:08,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285130511] [2021-11-13 02:39:08,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285130511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:08,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:08,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:39:08,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909347168] [2021-11-13 02:39:08,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:08,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:39:08,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:39:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:08,619 INFO L87 Difference]: Start difference. First operand 1165 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 02:39:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:08,801 INFO L93 Difference]: Finished difference Result 2405 states and 3145 transitions. [2021-11-13 02:39:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:39:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 152 [2021-11-13 02:39:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:08,811 INFO L225 Difference]: With dead ends: 2405 [2021-11-13 02:39:08,812 INFO L226 Difference]: Without dead ends: 1255 [2021-11-13 02:39:08,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:39:08,819 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 41 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:08,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 547 Invalid, 12 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 86.73ms Time] [2021-11-13 02:39:08,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-11-13 02:39:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1232. [2021-11-13 02:39:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 956 states have (on average 1.2751046025104602) internal successors, (1219), 968 states have internal predecessors, (1219), 196 states have call successors, (196), 80 states have call predecessors, (196), 79 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2021-11-13 02:39:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1610 transitions. [2021-11-13 02:39:08,957 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1610 transitions. Word has length 152 [2021-11-13 02:39:08,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:08,958 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1610 transitions. [2021-11-13 02:39:08,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 02:39:08,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1610 transitions. [2021-11-13 02:39:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-13 02:39:08,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:08,967 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] [2021-11-13 02:39:08,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:09,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:09,176 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1490878930, now seen corresponding path program 1 times [2021-11-13 02:39:09,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:09,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619559736] [2021-11-13 02:39:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:09,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:09,179 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:09,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:39:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:09,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:39:09,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 02:39:10,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-13 02:39:10,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:10,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619559736] [2021-11-13 02:39:10,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619559736] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:10,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:39:10,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-13 02:39:10,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243545339] [2021-11-13 02:39:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:10,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:10,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:10,857 INFO L87 Difference]: Start difference. First operand 1232 states and 1610 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 02:39:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:11,061 INFO L93 Difference]: Finished difference Result 2487 states and 3285 transitions. [2021-11-13 02:39:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-11-13 02:39:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:11,074 INFO L225 Difference]: With dead ends: 2487 [2021-11-13 02:39:11,075 INFO L226 Difference]: Without dead ends: 1274 [2021-11-13 02:39:11,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:39:11,079 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.62ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:11,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1118 Invalid, 17 Unknown, 0 Unchecked, 5.23ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 49.62ms Time] [2021-11-13 02:39:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-13 02:39:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1256. [2021-11-13 02:39:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 974 states have (on average 1.2700205338809034) internal successors, (1237), 986 states have internal predecessors, (1237), 196 states have call successors, (196), 80 states have call predecessors, (196), 85 states have return successors, (225), 201 states have call predecessors, (225), 195 states have call successors, (225) [2021-11-13 02:39:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1658 transitions. [2021-11-13 02:39:11,196 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1658 transitions. Word has length 161 [2021-11-13 02:39:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:11,197 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 1658 transitions. [2021-11-13 02:39:11,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-13 02:39:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1658 transitions. [2021-11-13 02:39:11,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 02:39:11,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:11,203 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] [2021-11-13 02:39:11,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:11,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:11,426 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 886339054, now seen corresponding path program 1 times [2021-11-13 02:39:11,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:11,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505680591] [2021-11-13 02:39:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:11,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:11,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:11,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:11,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:39:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:12,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:39:12,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-13 02:39:12,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-13 02:39:12,813 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:12,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505680591] [2021-11-13 02:39:12,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505680591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:12,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:12,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 02:39:12,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579436412] [2021-11-13 02:39:12,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:12,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 02:39:12,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 02:39:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:39:12,816 INFO L87 Difference]: Start difference. First operand 1256 states and 1658 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 02:39:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:13,079 INFO L93 Difference]: Finished difference Result 3270 states and 4431 transitions. [2021-11-13 02:39:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:13,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 167 [2021-11-13 02:39:13,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:13,110 INFO L225 Difference]: With dead ends: 3270 [2021-11-13 02:39:13,110 INFO L226 Difference]: Without dead ends: 2033 [2021-11-13 02:39:13,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:13,114 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 332 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.37ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:13,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 1361 Invalid, 30 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [14 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 79.37ms Time] [2021-11-13 02:39:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2021-11-13 02:39:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 1274. [2021-11-13 02:39:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 992 states have (on average 1.2651209677419355) internal successors, (1255), 1004 states have internal predecessors, (1255), 196 states have call successors, (196), 80 states have call predecessors, (196), 85 states have return successors, (225), 201 states have call predecessors, (225), 195 states have call successors, (225) [2021-11-13 02:39:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1676 transitions. [2021-11-13 02:39:13,273 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1676 transitions. Word has length 167 [2021-11-13 02:39:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:13,274 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 1676 transitions. [2021-11-13 02:39:13,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 02:39:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1676 transitions. [2021-11-13 02:39:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-13 02:39:13,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:13,280 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] [2021-11-13 02:39:13,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:13,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:13,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -18682827, now seen corresponding path program 1 times [2021-11-13 02:39:13,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:13,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710692768] [2021-11-13 02:39:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:13,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:13,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:13,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:13,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:39:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:14,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 02:39:14,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:39:14,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-13 02:39:15,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:15,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710692768] [2021-11-13 02:39:15,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710692768] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:39:15,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:39:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-13 02:39:15,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964910482] [2021-11-13 02:39:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:15,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:39:15,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:39:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:39:15,970 INFO L87 Difference]: Start difference. First operand 1274 states and 1676 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 02:39:18,466 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 [] [2021-11-13 02:39:20,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:20,677 INFO L93 Difference]: Finished difference Result 3291 states and 4445 transitions. [2021-11-13 02:39:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 02:39:20,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2021-11-13 02:39:20,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:20,691 INFO L225 Difference]: With dead ends: 3291 [2021-11-13 02:39:20,691 INFO L226 Difference]: Without dead ends: 2036 [2021-11-13 02:39:20,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:39:20,695 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 203 mSDsluCounter, 3001 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4279.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 3392 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.26ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4360.84ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:20,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 3392 Invalid, 82 Unknown, 0 Unchecked, 10.26ms Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 2 Unknown, 0 Unchecked, 4360.84ms Time] [2021-11-13 02:39:20,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-11-13 02:39:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1322. [2021-11-13 02:39:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1034 states have (on average 1.2543520309477756) internal successors, (1297), 1040 states have internal predecessors, (1297), 196 states have call successors, (196), 80 states have call predecessors, (196), 91 states have return successors, (237), 213 states have call predecessors, (237), 195 states have call successors, (237) [2021-11-13 02:39:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1730 transitions. [2021-11-13 02:39:20,816 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1730 transitions. Word has length 169 [2021-11-13 02:39:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:20,817 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 1730 transitions. [2021-11-13 02:39:20,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-13 02:39:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1730 transitions. [2021-11-13 02:39:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 02:39:20,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:20,822 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] [2021-11-13 02:39:20,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:21,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:21,044 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1318126695, now seen corresponding path program 2 times [2021-11-13 02:39:21,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:21,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002311031] [2021-11-13 02:39:21,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:39:21,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:21,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:21,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:39:21,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 02:39:21,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:39:21,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 02:39:21,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 02:39:22,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 02:39:22,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:22,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002311031] [2021-11-13 02:39:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002311031] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:22,553 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:22,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 02:39:22,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694324573] [2021-11-13 02:39:22,553 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:22,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:39:22,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:39:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:39:22,555 INFO L87 Difference]: Start difference. First operand 1322 states and 1730 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 02:39:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:24,318 INFO L93 Difference]: Finished difference Result 2689 states and 3654 transitions. [2021-11-13 02:39:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:39:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 175 [2021-11-13 02:39:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:24,332 INFO L225 Difference]: With dead ends: 2689 [2021-11-13 02:39:24,332 INFO L226 Difference]: Without dead ends: 2027 [2021-11-13 02:39:24,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:24,336 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 738 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1266.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.53ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1349.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:24,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 1814 Invalid, 159 Unknown, 0 Unchecked, 9.53ms Time], IncrementalHoareTripleChecker [107 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 1349.25ms Time] [2021-11-13 02:39:24,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-11-13 02:39:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1331. [2021-11-13 02:39:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1043 states have (on average 1.25215723873442) internal successors, (1306), 1049 states have internal predecessors, (1306), 196 states have call successors, (196), 80 states have call predecessors, (196), 91 states have return successors, (237), 213 states have call predecessors, (237), 195 states have call successors, (237) [2021-11-13 02:39:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1739 transitions. [2021-11-13 02:39:24,472 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1739 transitions. Word has length 175 [2021-11-13 02:39:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:24,473 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 1739 transitions. [2021-11-13 02:39:24,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 02:39:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1739 transitions. [2021-11-13 02:39:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-13 02:39:24,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:24,479 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 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] [2021-11-13 02:39:24,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:24,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:24,703 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:24,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1151185806, now seen corresponding path program 1 times [2021-11-13 02:39:24,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:24,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58234110] [2021-11-13 02:39:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:24,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:24,707 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:24,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:39:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:25,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 02:39:25,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 02:39:26,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 02:39:27,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:27,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58234110] [2021-11-13 02:39:27,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58234110] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:27,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [7351362] [2021-11-13 02:39:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:27,550 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:39:27,551 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:39:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-13 02:39:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:28,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-13 02:39:28,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 02:39:28,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-13 02:39:29,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [7351362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:29,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767603125] [2021-11-13 02:39:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:29,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:39:29,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:29,515 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:39:29,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 02:39:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:39:29,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-13 02:39:30,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-13 02:39:31,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767603125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:31,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 02:39:31,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 4, 4] total 20 [2021-11-13 02:39:31,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700895583] [2021-11-13 02:39:31,575 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 02:39:31,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 02:39:31,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 02:39:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-13 02:39:31,578 INFO L87 Difference]: Start difference. First operand 1331 states and 1739 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, (53), 3 states have call predecessors, (53), 7 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) [2021-11-13 02:39:39,076 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 [] [2021-11-13 02:39:41,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:43,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:45,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:47,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:50,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:52,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:52,592 INFO L93 Difference]: Finished difference Result 11027 states and 14681 transitions. [2021-11-13 02:39:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-13 02:39:52,594 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, (53), 3 states have call predecessors, (53), 7 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) Word has length 206 [2021-11-13 02:39:52,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:52,672 INFO L225 Difference]: With dead ends: 11027 [2021-11-13 02:39:52,672 INFO L226 Difference]: Without dead ends: 9715 [2021-11-13 02:39:52,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=404, Invalid=2902, Unknown=0, NotChecked=0, Total=3306 [2021-11-13 02:39:52,683 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 1600 mSDsluCounter, 10250 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 240 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17762.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 11053 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.67ms SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18411.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:52,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 11053 Invalid, 1564 Unknown, 0 Unchecked, 46.67ms Time], IncrementalHoareTripleChecker [240 Valid, 1317 Invalid, 7 Unknown, 0 Unchecked, 18411.48ms Time] [2021-11-13 02:39:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9715 states. [2021-11-13 02:39:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9715 to 7872. [2021-11-13 02:39:53,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7872 states, 6148 states have (on average 1.252765126870527) internal successors, (7702), 6196 states have internal predecessors, (7702), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1479), 1287 states have call predecessors, (1479), 1191 states have call successors, (1479) [2021-11-13 02:39:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7872 states to 7872 states and 10373 transitions. [2021-11-13 02:39:53,740 INFO L78 Accepts]: Start accepts. Automaton has 7872 states and 10373 transitions. Word has length 206 [2021-11-13 02:39:53,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:53,741 INFO L470 AbstractCegarLoop]: Abstraction has 7872 states and 10373 transitions. [2021-11-13 02:39:53,743 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, (53), 3 states have call predecessors, (53), 7 states have return successors, (55), 10 states have call predecessors, (55), 6 states have call successors, (55) [2021-11-13 02:39:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 7872 states and 10373 transitions. [2021-11-13 02:39:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-13 02:39:53,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:53,768 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:53,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:54,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:54,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-13 02:39:54,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:54,384 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -512829008, now seen corresponding path program 1 times [2021-11-13 02:39:54,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:54,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63584025] [2021-11-13 02:39:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:54,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:54,387 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:54,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 02:39:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:55,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 02:39:55,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 02:39:55,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-13 02:39:56,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:56,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63584025] [2021-11-13 02:39:56,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63584025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:39:56,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [356339289] [2021-11-13 02:39:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:56,674 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:56,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:39:56,676 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:39:56,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-13 02:39:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:57,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:39:57,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 02:39:57,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 02:39:57,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [356339289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:57,914 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:39:57,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 6] total 13 [2021-11-13 02:39:57,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195553204] [2021-11-13 02:39:57,915 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:57,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:39:57,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:57,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:39:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:39:57,917 INFO L87 Difference]: Start difference. First operand 7872 states and 10373 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-13 02:39:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:59,366 INFO L93 Difference]: Finished difference Result 24919 states and 33016 transitions. [2021-11-13 02:39:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:39:59,367 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 212 [2021-11-13 02:39:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:59,460 INFO L225 Difference]: With dead ends: 24919 [2021-11-13 02:39:59,460 INFO L226 Difference]: Without dead ends: 17066 [2021-11-13 02:39:59,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:39:59,481 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 336 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:59,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 957 Invalid, 18 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 79.73ms Time] [2021-11-13 02:39:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17066 states. [2021-11-13 02:40:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17066 to 7908. [2021-11-13 02:40:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7908 states, 6184 states have (on average 1.251293661060802) internal successors, (7738), 6244 states have internal predecessors, (7738), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1479), 1275 states have call predecessors, (1479), 1191 states have call successors, (1479) [2021-11-13 02:40:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7908 states to 7908 states and 10409 transitions. [2021-11-13 02:40:00,729 INFO L78 Accepts]: Start accepts. Automaton has 7908 states and 10409 transitions. Word has length 212 [2021-11-13 02:40:00,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:00,730 INFO L470 AbstractCegarLoop]: Abstraction has 7908 states and 10409 transitions. [2021-11-13 02:40:00,730 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-13 02:40:00,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7908 states and 10409 transitions. [2021-11-13 02:40:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-13 02:40:00,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:00,755 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:00,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-13 02:40:00,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:01,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:01,160 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1584955132, now seen corresponding path program 1 times [2021-11-13 02:40:01,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:01,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128276583] [2021-11-13 02:40:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:01,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:01,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:01,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:01,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 02:40:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:02,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 02:40:02,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 02:40:02,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-13 02:40:03,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:03,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128276583] [2021-11-13 02:40:03,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128276583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:40:03,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [405335017] [2021-11-13 02:40:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:03,343 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:03,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 02:40:03,344 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 02:40:03,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-13 02:40:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:03,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-13 02:40:03,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-13 02:40:04,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-13 02:40:04,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [405335017] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:04,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:40:04,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6, 6] total 17 [2021-11-13 02:40:04,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622789622] [2021-11-13 02:40:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:04,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:04,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-13 02:40:04,967 INFO L87 Difference]: Start difference. First operand 7908 states and 10409 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 02:40:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:06,552 INFO L93 Difference]: Finished difference Result 17420 states and 23904 transitions. [2021-11-13 02:40:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:40:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 219 [2021-11-13 02:40:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:06,603 INFO L225 Difference]: With dead ends: 17420 [2021-11-13 02:40:06,603 INFO L226 Difference]: Without dead ends: 13425 [2021-11-13 02:40:06,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-11-13 02:40:06,615 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 303 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.34ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:06,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 1874 Invalid, 88 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [59 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 173.34ms Time] [2021-11-13 02:40:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2021-11-13 02:40:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 8016. [2021-11-13 02:40:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 6292 states have (on average 1.2469802924348379) internal successors, (7846), 6316 states have internal predecessors, (7846), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1479), 1311 states have call predecessors, (1479), 1191 states have call successors, (1479) [2021-11-13 02:40:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 10517 transitions. [2021-11-13 02:40:07,670 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 10517 transitions. Word has length 219 [2021-11-13 02:40:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:07,671 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 10517 transitions. [2021-11-13 02:40:07,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 02:40:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 10517 transitions. [2021-11-13 02:40:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-13 02:40:07,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:07,695 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 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, 1] [2021-11-13 02:40:07,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:07,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:08,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 02:40:08,115 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:08,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -231658088, now seen corresponding path program 2 times [2021-11-13 02:40:08,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:08,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338565114] [2021-11-13 02:40:08,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 02:40:08,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:08,118 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 02:40:11,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 02:40:11,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:11,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 02:40:11,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 02:40:12,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-13 02:40:13,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:13,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338565114] [2021-11-13 02:40:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338565114] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:40:13,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:40:13,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2021-11-13 02:40:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287970028] [2021-11-13 02:40:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:13,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 02:40:13,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 02:40:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:40:13,412 INFO L87 Difference]: Start difference. First operand 8016 states and 10517 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 02:40:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:14,462 INFO L93 Difference]: Finished difference Result 19226 states and 25794 transitions. [2021-11-13 02:40:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:40:14,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 225 [2021-11-13 02:40:14,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:14,510 INFO L225 Difference]: With dead ends: 19226 [2021-11-13 02:40:14,510 INFO L226 Difference]: Without dead ends: 11229 [2021-11-13 02:40:14,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:40:14,535 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 95 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.73ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:14,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 2242 Invalid, 31 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 92.73ms Time] [2021-11-13 02:40:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11229 states. [2021-11-13 02:40:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11229 to 8124. [2021-11-13 02:40:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8124 states, 6400 states have (on average 1.2428125) internal successors, (7954), 6388 states have internal predecessors, (7954), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1479), 1347 states have call predecessors, (1479), 1191 states have call successors, (1479) [2021-11-13 02:40:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8124 states to 8124 states and 10625 transitions. [2021-11-13 02:40:15,879 INFO L78 Accepts]: Start accepts. Automaton has 8124 states and 10625 transitions. Word has length 225 [2021-11-13 02:40:15,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:15,880 INFO L470 AbstractCegarLoop]: Abstraction has 8124 states and 10625 transitions. [2021-11-13 02:40:15,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 6 states have internal predecessors, (141), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 02:40:15,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8124 states and 10625 transitions. [2021-11-13 02:40:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-13 02:40:15,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:15,909 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 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, 1, 1, 1] [2021-11-13 02:40:15,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:16,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:16,132 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1402819212, now seen corresponding path program 3 times [2021-11-13 02:40:16,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:16,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920399651] [2021-11-13 02:40:16,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:40:16,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:16,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:16,135 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:16,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 02:40:19,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:40:19,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:40:19,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:40:19,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:20,320 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-13 02:40:20,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-13 02:40:20,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:20,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920399651] [2021-11-13 02:40:20,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920399651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:20,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:20,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:40:20,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567383470] [2021-11-13 02:40:20,951 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:20,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:20,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:20,956 INFO L87 Difference]: Start difference. First operand 8124 states and 10625 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 02:40:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:21,507 INFO L93 Difference]: Finished difference Result 16301 states and 21303 transitions. [2021-11-13 02:40:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 231 [2021-11-13 02:40:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:21,539 INFO L225 Difference]: With dead ends: 16301 [2021-11-13 02:40:21,540 INFO L226 Difference]: Without dead ends: 8124 [2021-11-13 02:40:21,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:21,565 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.82ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:21,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1941 Invalid, 17 Unknown, 0 Unchecked, 3.08ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 55.82ms Time] [2021-11-13 02:40:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8124 states. [2021-11-13 02:40:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8124 to 8124. [2021-11-13 02:40:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8124 states, 6400 states have (on average 1.2428125) internal successors, (7954), 6388 states have internal predecessors, (7954), 1192 states have call successors, (1192), 460 states have call predecessors, (1192), 531 states have return successors, (1443), 1347 states have call predecessors, (1443), 1191 states have call successors, (1443) [2021-11-13 02:40:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8124 states to 8124 states and 10589 transitions. [2021-11-13 02:40:22,587 INFO L78 Accepts]: Start accepts. Automaton has 8124 states and 10589 transitions. Word has length 231 [2021-11-13 02:40:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:22,588 INFO L470 AbstractCegarLoop]: Abstraction has 8124 states and 10589 transitions. [2021-11-13 02:40:22,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-13 02:40:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8124 states and 10589 transitions. [2021-11-13 02:40:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-13 02:40:22,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:22,616 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 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, 1] [2021-11-13 02:40:22,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:22,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:22,832 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:22,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1810835280, now seen corresponding path program 1 times [2021-11-13 02:40:22,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:22,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044995242] [2021-11-13 02:40:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:22,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:22,835 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:22,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-13 02:40:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:24,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 02:40:24,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-13 02:40:24,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-13 02:40:25,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:25,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044995242] [2021-11-13 02:40:25,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044995242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:25,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:25,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:40:25,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975436271] [2021-11-13 02:40:25,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:25,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:40:25,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:40:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:40:25,148 INFO L87 Difference]: Start difference. First operand 8124 states and 10589 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-13 02:40:26,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:26,696 INFO L93 Difference]: Finished difference Result 24842 states and 33606 transitions. [2021-11-13 02:40:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:40:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 237 [2021-11-13 02:40:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:26,762 INFO L225 Difference]: With dead ends: 24842 [2021-11-13 02:40:26,762 INFO L226 Difference]: Without dead ends: 16737 [2021-11-13 02:40:26,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:40:26,793 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 357 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.39ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:26,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1948 Invalid, 62 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [36 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 144.39ms Time] [2021-11-13 02:40:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16737 states. [2021-11-13 02:40:28,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16737 to 10158. [2021-11-13 02:40:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 7966 states have (on average 1.2493095656540296) internal successors, (9952), 7918 states have internal predecessors, (9952), 1660 states have call successors, (1660), 460 states have call predecessors, (1660), 531 states have return successors, (2055), 1851 states have call predecessors, (2055), 1659 states have call successors, (2055) [2021-11-13 02:40:28,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 13667 transitions. [2021-11-13 02:40:28,345 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 13667 transitions. Word has length 237 [2021-11-13 02:40:28,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:28,346 INFO L470 AbstractCegarLoop]: Abstraction has 10158 states and 13667 transitions. [2021-11-13 02:40:28,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 4 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-13 02:40:28,347 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 13667 transitions. [2021-11-13 02:40:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-13 02:40:28,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:28,378 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 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, 1] [2021-11-13 02:40:28,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:28,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:28,592 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash -587152558, now seen corresponding path program 1 times [2021-11-13 02:40:28,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:28,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678447525] [2021-11-13 02:40:28,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:28,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:28,595 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:28,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6df35e9-0f8a-45ef-8d4e-cc891fdb6c85/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-13 02:40:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:33,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-13 02:40:33,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:33,092 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 [2021-11-13 02:40:33,151 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 [2021-11-13 02:40:33,918 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 14 treesize of output 11 [2021-11-13 02:40:36,335 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 20 treesize of output 17 [2021-11-13 02:40:36,342 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 13 treesize of output 12 [2021-11-13 02:40:36,727 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 02:40:36,727 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 [2021-11-13 02:40:36,761 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-13 02:40:36,761 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 [2021-11-13 02:40:37,869 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 02:40:37,870 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 52 treesize of output 48 [2021-11-13 02:40:48,266 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 14 treesize of output 11 [2021-11-13 02:42:39,534 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-13 02:42:39,535 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 56 treesize of output 73 [2021-11-13 02:42:48,479 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-13 02:42:48,479 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 71 treesize of output 65 [2021-11-13 02:42:53,007 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 [2021-11-13 02:44:49,093 INFO L354 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2021-11-13 02:44:49,094 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 83 treesize of output 110 [2021-11-13 02:44:50,382 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-13 02:44:50,383 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 108 treesize of output 100 [2021-11-13 02:44:56,958 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|ldv_init_zalloc_#t~malloc71.base| (_ 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~malloc71.base| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_1|)) (= (select |c_#memory_int| |ldv_init_zalloc_#t~malloc71.base|) .cse0)))) is different from true [2021-11-13 02:45:08,338 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-13 02:45:08,339 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 108 treesize of output 114 [2021-11-13 02:45:19,766 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc71.base| (_ 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|)) (not (= |ldv_init_zalloc_#t~malloc71.base| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_6|)) (= (select |c_#memory_int| |ldv_init_zalloc_#t~malloc71.base|) .cse0)))) is different from true [2021-11-13 02:45:22,953 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-13 02:45:22,953 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 [2021-11-13 02:45:22,966 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 [2021-11-13 02:45:25,135 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_7| (_ BitVec 64)) (|ldv_init_zalloc_#t~malloc71.base| (_ 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 (= |ldv_init_zalloc_#t~malloc71.base| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_7|)) (= (select |c_#memory_int| |ldv_init_zalloc_#t~malloc71.base|) .cse0)))) is different from true [2021-11-13 02:45:30,347 INFO L354 Elim1Store]: treesize reduction 42, result has 10.6 percent of original size [2021-11-13 02:45:30,347 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 [2021-11-13 02:45:30,358 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 [2021-11-13 02:45:30,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:45:30,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-13 02:45:30,578 INFO L354 Elim1Store]: treesize reduction 84, result has 11.6 percent of original size [2021-11-13 02:45:30,578 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 [2021-11-13 02:45:30,638 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-13 02:45:30,638 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 [2021-11-13 02:45:35,356 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ldv_init_zalloc_#t~malloc71.base| (_ 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) (not (= |ldv_init_zalloc_#t~malloc71.base| |v_ULTIMATE.start_usb_acecad_probe_~id#1.base_BEFORE_CALL_8|)) (= (select |c_#memory_int| |ldv_init_zalloc_#t~malloc71.base|) .cse0)))) is different from true [2021-11-13 02:45:35,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:45:35,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3779 [2021-11-13 02:45:35,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:45:35,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4139