./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs --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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:43:36,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:43:36,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:43:36,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:43:36,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:43:36,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:43:36,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:43:36,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:43:36,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:43:36,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:43:36,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:43:36,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:43:36,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:43:36,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:43:36,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:43:36,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:43:36,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:43:36,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:43:36,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:43:36,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:43:36,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:43:36,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:43:36,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:43:36,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:43:36,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:43:36,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:43:36,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:43:36,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:43:36,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:43:36,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:43:36,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:43:36,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:43:36,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:43:36,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:43:36,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:43:36,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:43:36,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:43:36,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:43:36,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:43:36,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:43:36,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:43:36,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:43:36,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:43:36,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:43:36,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:43:36,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:43:36,770 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:43:36,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:43:36,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:43:36,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:43:36,771 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:43:36,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:43:36,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:43:36,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:43:36,773 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:43:36,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:43:36,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:43:36,773 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:43:36,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:43:36,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:43:36,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:43:36,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:43:36,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:43:36,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:43:36,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:43:36,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:43:36,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:43:36,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:43:36,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:43:36,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:43:36,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:43:36,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:43:36,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:43:36,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:43:36,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:43:36,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:43:36,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:43:36,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:43:36,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:43:36,781 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2021-11-19 14:43:37,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:43:37,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:43:37,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:43:37,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:43:37,073 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:43:37,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:43:37,149 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/7fada3958/3d551072a17a4c72a7de4a4b3da864f0/FLAG83e63d11a [2021-11-19 14:43:38,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:43:38,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:43:38,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/7fada3958/3d551072a17a4c72a7de4a4b3da864f0/FLAG83e63d11a [2021-11-19 14:43:38,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/7fada3958/3d551072a17a4c72a7de4a4b3da864f0 [2021-11-19 14:43:38,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:43:38,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:43:38,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:38,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:43:38,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:43:38,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:38" (1/1) ... [2021-11-19 14:43:38,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e98ff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:38, skipping insertion in model container [2021-11-19 14:43:38,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:38" (1/1) ... [2021-11-19 14:43:38,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:43:38,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:43:41,084 WARN L230 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-11-19 14:43:41,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:41,361 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) [2021-11-19 14:43:41,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1352859d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:41, skipping insertion in model container [2021-11-19 14:43:41,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:41,362 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:43:41,365 INFO L158 Benchmark]: Toolchain (without parser) took 2837.57ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 55.1MB in the beginning and 68.5MB in the end (delta: -13.4MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2021-11-19 14:43:41,366 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 78.3MB in the beginning and 78.2MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:43:41,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2832.60ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 54.8MB in the beginning and 68.5MB in the end (delta: -13.7MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. [2021-11-19 14:43:41,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 107.0MB. Free memory was 78.3MB in the beginning and 78.2MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2832.60ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 54.8MB in the beginning and 68.5MB in the end (delta: -13.7MB). Peak memory consumption was 56.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3550]: 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs --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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:43:43,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:43:43,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:43:43,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:43:43,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:43:43,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:43:43,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:43:43,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:43:43,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:43:43,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:43:43,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:43:43,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:43:43,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:43:43,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:43:43,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:43:43,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:43:43,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:43:43,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:43:43,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:43:43,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:43:43,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:43:43,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:43:43,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:43:43,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:43:44,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:43:44,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:43:44,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:43:44,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:43:44,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:43:44,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:43:44,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:43:44,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:43:44,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:43:44,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:43:44,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:43:44,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:43:44,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:43:44,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:43:44,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:43:44,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:43:44,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:43:44,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:43:44,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:43:44,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:43:44,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:43:44,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:43:44,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:43:44,074 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:43:44,074 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:43:44,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:43:44,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:43:44,075 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:43:44,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:43:44,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:43:44,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:43:44,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:43:44,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:43:44,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:43:44,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:43:44,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:43:44,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:43:44,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:43:44,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:43:44,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:43:44,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:43:44,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:43:44,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:43:44,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:43:44,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:43:44,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:43:44,082 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:43:44,082 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:43:44,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:43:44,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:43:44,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:43:44,083 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2021-11-19 14:43:44,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:43:44,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:43:44,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:43:44,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:43:44,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:43:44,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:43:44,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/ec2420633/7780a4f5335d488892889bbd497f400a/FLAGa1dbb931f [2021-11-19 14:43:45,875 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:43:45,877 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:43:45,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/ec2420633/7780a4f5335d488892889bbd497f400a/FLAGa1dbb931f [2021-11-19 14:43:46,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/data/ec2420633/7780a4f5335d488892889bbd497f400a [2021-11-19 14:43:46,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:43:46,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:43:46,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:46,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:43:46,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:43:46,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:46" (1/1) ... [2021-11-19 14:43:46,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ba4c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:46, skipping insertion in model container [2021-11-19 14:43:46,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:43:46" (1/1) ... [2021-11-19 14:43:46,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:43:46,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:43:48,719 WARN L230 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-11-19 14:43:48,849 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:48,939 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:43:49,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:43:49,769 WARN L230 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-11-19 14:43:49,796 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:49,941 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:43:50,523 WARN L230 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_364ca52d-9fd6-4b9c-acdf-889195e5a296/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2021-11-19 14:43:50,538 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:43:50,727 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:43:50,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50 WrapperNode [2021-11-19 14:43:50,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:43:50,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:43:50,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:43:50,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:43:50,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:50,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,418 INFO L137 Inliner]: procedures = 180, calls = 6771, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 15577 [2021-11-19 14:43:51,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:43:51,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:43:51,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:43:51,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:43:51,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:51,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:52,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:52,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:43:52,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:43:52,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:43:52,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:43:52,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (1/1) ... [2021-11-19 14:43:52,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:43:52,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:43:52,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:43:52,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:43:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2021-11-19 14:43:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2021-11-19 14:43:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2021-11-19 14:43:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2021-11-19 14:43:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:43:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-19 14:43:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-19 14:43:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2021-11-19 14:43:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2021-11-19 14:43:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2021-11-19 14:43:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2021-11-19 14:43:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:43:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2021-11-19 14:43:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2021-11-19 14:43:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-11-19 14:43:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2021-11-19 14:43:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2021-11-19 14:43:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:43:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-19 14:43:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2021-11-19 14:43:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2021-11-19 14:43:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:43:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:43:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2021-11-19 14:43:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2021-11-19 14:43:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2021-11-19 14:43:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 14:43:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2021-11-19 14:43:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2021-11-19 14:43:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~C_INT [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 14:43:52,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:43:52,282 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2021-11-19 14:43:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2021-11-19 14:43:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2021-11-19 14:43:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2021-11-19 14:43:52,283 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2021-11-19 14:43:52,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 14:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 14:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2021-11-19 14:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2021-11-19 14:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-11-19 14:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2021-11-19 14:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-19 14:43:52,284 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-19 14:43:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2021-11-19 14:43:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-11-19 14:43:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2021-11-19 14:43:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2021-11-19 14:43:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-19 14:43:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~VOID [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2021-11-19 14:43:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2021-11-19 14:43:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2021-11-19 14:43:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2021-11-19 14:43:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2021-11-19 14:43:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2021-11-19 14:43:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2021-11-19 14:43:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2021-11-19 14:43:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2021-11-19 14:43:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2021-11-19 14:43:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2021-11-19 14:43:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2021-11-19 14:43:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:43:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:43:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:43:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:43:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:43:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2021-11-19 14:43:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2021-11-19 14:43:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-19 14:43:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2021-11-19 14:43:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2021-11-19 14:43:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:43:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:43:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2021-11-19 14:43:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2021-11-19 14:43:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2021-11-19 14:43:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2021-11-19 14:43:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2021-11-19 14:43:52,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2021-11-19 14:43:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2021-11-19 14:43:52,294 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2021-11-19 14:43:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:43:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-19 14:43:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-19 14:43:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2021-11-19 14:43:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2021-11-19 14:43:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2021-11-19 14:43:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2021-11-19 14:43:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:43:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:43:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2021-11-19 14:43:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2021-11-19 14:43:53,644 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:43:53,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:44:43,507 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:44:43,586 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:44:43,586 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 14:44:43,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:43 BoogieIcfgContainer [2021-11-19 14:44:43,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:44:43,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:44:43,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:44:43,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:44:43,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:43:46" (1/3) ... [2021-11-19 14:44:43,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28409ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:43, skipping insertion in model container [2021-11-19 14:44:43,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:43:50" (2/3) ... [2021-11-19 14:44:43,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28409ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:44:43, skipping insertion in model container [2021-11-19 14:44:43,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:44:43" (3/3) ... [2021-11-19 14:44:43,607 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-19 14:44:43,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:44:43,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:44:43,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:44:43,743 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 [2021-11-19 14:44:43,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:44:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2021-11-19 14:44:43,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:44:43,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:43,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:43,890 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash 715822242, now seen corresponding path program 1 times [2021-11-19 14:44:43,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147715273] [2021-11-19 14:44:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:43,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:43,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:43,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:43,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:44:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:44:51,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 4711 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:44:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:44:51,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:51,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:44:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:44:51,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:44:51,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147715273] [2021-11-19 14:44:51,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147715273] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:44:51,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:44:51,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:44:51,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712072028] [2021-11-19 14:44:51,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:44:51,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:44:51,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:44:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:44:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:44:51,547 INFO L87 Difference]: Start difference. First operand has 5322 states, 3979 states have (on average 1.5275194772555918) internal successors, (6078), 3991 states have internal predecessors, (6078), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:44:53,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:44:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:44:54,617 INFO L93 Difference]: Finished difference Result 10704 states and 17477 transitions. [2021-11-19 14:44:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:44:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 14:44:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:44:54,700 INFO L225 Difference]: With dead ends: 10704 [2021-11-19 14:44:54,700 INFO L226 Difference]: Without dead ends: 5381 [2021-11-19 14:44:54,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:44:54,792 INFO L933 BasicCegarLoop]: 8652 mSDtfsCounter, 8384 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 9009 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:44:54,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8384 Valid, 9009 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:44:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2021-11-19 14:44:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 5379. [2021-11-19 14:44:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5379 states, 4031 states have (on average 1.528404862317043) internal successors, (6161), 4039 states have internal predecessors, (6161), 1295 states have call successors, (1295), 53 states have call predecessors, (1295), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-11-19 14:44:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8745 transitions. [2021-11-19 14:44:56,510 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8745 transitions. Word has length 8 [2021-11-19 14:44:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:44:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 5379 states and 8745 transitions. [2021-11-19 14:44:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:44:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8745 transitions. [2021-11-19 14:44:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:44:56,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:44:56,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:44:56,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:44:56,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:44:56,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:44:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:44:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 713153294, now seen corresponding path program 1 times [2021-11-19 14:44:56,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:44:56,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105855453] [2021-11-19 14:44:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:44:56,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:44:56,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:44:56,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:44:56,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:45:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:04,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 4712 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:04,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:04,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:04,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:04,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105855453] [2021-11-19 14:45:04,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105855453] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:04,175 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:04,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:04,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424877733] [2021-11-19 14:45:04,176 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:04,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:04,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:04,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:04,179 INFO L87 Difference]: Start difference. First operand 5379 states and 8745 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:06,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:06,916 INFO L93 Difference]: Finished difference Result 5381 states and 8746 transitions. [2021-11-19 14:45:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 14:45:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:06,988 INFO L225 Difference]: With dead ends: 5381 [2021-11-19 14:45:06,988 INFO L226 Difference]: Without dead ends: 5378 [2021-11-19 14:45:06,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:07,002 INFO L933 BasicCegarLoop]: 8643 mSDtfsCounter, 8638 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8638 SdHoareTripleChecker+Valid, 8643 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:07,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8638 Valid, 8643 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:45:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2021-11-19 14:45:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5378. [2021-11-19 14:45:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 4031 states have (on average 1.528156784916894) internal successors, (6160), 4038 states have internal predecessors, (6160), 1294 states have call successors, (1294), 53 states have call predecessors, (1294), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-11-19 14:45:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8743 transitions. [2021-11-19 14:45:08,293 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8743 transitions. Word has length 9 [2021-11-19 14:45:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 8743 transitions. [2021-11-19 14:45:08,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8743 transitions. [2021-11-19 14:45:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:45:08,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:08,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:08,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:08,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:08,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash 630420773, now seen corresponding path program 1 times [2021-11-19 14:45:08,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:08,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563003883] [2021-11-19 14:45:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:08,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:08,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:08,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:45:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 4713 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:15,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:15,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:16,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:16,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563003883] [2021-11-19 14:45:16,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563003883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:16,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:16,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:16,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272351853] [2021-11-19 14:45:16,021 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:16,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:16,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:16,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:16,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:16,023 INFO L87 Difference]: Start difference. First operand 5378 states and 8743 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:18,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:18,882 INFO L93 Difference]: Finished difference Result 5380 states and 8744 transitions. [2021-11-19 14:45:18,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:18,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 14:45:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:18,961 INFO L225 Difference]: With dead ends: 5380 [2021-11-19 14:45:18,962 INFO L226 Difference]: Without dead ends: 5377 [2021-11-19 14:45:18,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:18,975 INFO L933 BasicCegarLoop]: 8641 mSDtfsCounter, 8635 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8635 SdHoareTripleChecker+Valid, 8641 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8635 Valid, 8641 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:45:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2021-11-19 14:45:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 5377. [2021-11-19 14:45:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5377 states, 4031 states have (on average 1.5279087075167452) internal successors, (6159), 4037 states have internal predecessors, (6159), 1293 states have call successors, (1293), 53 states have call predecessors, (1293), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2021-11-19 14:45:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5377 states to 5377 states and 8741 transitions. [2021-11-19 14:45:20,129 INFO L78 Accepts]: Start accepts. Automaton has 5377 states and 8741 transitions. Word has length 10 [2021-11-19 14:45:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:20,130 INFO L470 AbstractCegarLoop]: Abstraction has 5377 states and 8741 transitions. [2021-11-19 14:45:20,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5377 states and 8741 transitions. [2021-11-19 14:45:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:45:20,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:20,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:45:20,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:45:20,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:20,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1934282511, now seen corresponding path program 1 times [2021-11-19 14:45:20,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:20,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832885572] [2021-11-19 14:45:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:20,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:20,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:45:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:27,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 4714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:45:27,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:27,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:27,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:27,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832885572] [2021-11-19 14:45:27,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832885572] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:27,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:27,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:45:27,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925504016] [2021-11-19 14:45:27,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:27,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:45:27,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:45:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:27,841 INFO L87 Difference]: Start difference. First operand 5377 states and 8741 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:30,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:31,100 INFO L93 Difference]: Finished difference Result 16109 states and 26329 transitions. [2021-11-19 14:45:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:45:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 14:45:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:31,245 INFO L225 Difference]: With dead ends: 16109 [2021-11-19 14:45:31,245 INFO L226 Difference]: Without dead ends: 10731 [2021-11-19 14:45:31,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:45:31,314 INFO L933 BasicCegarLoop]: 10040 mSDtfsCounter, 8663 mSDsluCounter, 8663 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8663 SdHoareTripleChecker+Valid, 18703 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:31,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8663 Valid, 18703 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 14:45:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10731 states. [2021-11-19 14:45:33,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10731 to 10727. [2021-11-19 14:45:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 8045 states have (on average 1.5286513362336855) internal successors, (12298), 8055 states have internal predecessors, (12298), 2579 states have call successors, (2579), 104 states have call predecessors, (2579), 102 states have return successors, (2653), 2571 states have call predecessors, (2653), 2573 states have call successors, (2653) [2021-11-19 14:45:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 17530 transitions. [2021-11-19 14:45:33,331 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 17530 transitions. Word has length 11 [2021-11-19 14:45:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:33,331 INFO L470 AbstractCegarLoop]: Abstraction has 10727 states and 17530 transitions. [2021-11-19 14:45:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:45:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 17530 transitions. [2021-11-19 14:45:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 14:45:33,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:33,351 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:45:33,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:45:33,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:33,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash -874384355, now seen corresponding path program 1 times [2021-11-19 14:45:33,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:33,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768677000] [2021-11-19 14:45:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:33,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:33,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:33,583 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:33,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:45:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:40,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 4997 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:45:40,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:45:41,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:45:41,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:41,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768677000] [2021-11-19 14:45:41,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768677000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:41,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:41,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:45:41,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002547948] [2021-11-19 14:45:41,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:41,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:45:41,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:45:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:45:41,565 INFO L87 Difference]: Start difference. First operand 10727 states and 17530 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:45:43,163 INFO L93 Difference]: Finished difference Result 21610 states and 35525 transitions. [2021-11-19 14:45:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:45:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2021-11-19 14:45:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:45:43,266 INFO L225 Difference]: With dead ends: 21610 [2021-11-19 14:45:43,266 INFO L226 Difference]: Without dead ends: 10886 [2021-11-19 14:45:43,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:45:43,389 INFO L933 BasicCegarLoop]: 8642 mSDtfsCounter, 257 mSDsluCounter, 25913 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 34555 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:45:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 34555 Invalid, 159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:45:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2021-11-19 14:45:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 10863. [2021-11-19 14:45:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 8158 states have (on average 1.5279480264770777) internal successors, (12465), 8169 states have internal predecessors, (12465), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 105 states have return successors, (2692), 2591 states have call predecessors, (2692), 2593 states have call successors, (2692) [2021-11-19 14:45:45,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 17756 transitions. [2021-11-19 14:45:45,804 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 17756 transitions. Word has length 69 [2021-11-19 14:45:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:45:45,805 INFO L470 AbstractCegarLoop]: Abstraction has 10863 states and 17756 transitions. [2021-11-19 14:45:45,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 14:45:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 17756 transitions. [2021-11-19 14:45:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:45:45,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:45:45,817 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:45:45,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-19 14:45:46,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:45:46,044 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:45:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:45:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 810051597, now seen corresponding path program 1 times [2021-11-19 14:45:46,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:45:46,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129134158] [2021-11-19 14:45:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:45:46,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:45:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:45:46,053 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:45:46,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:45:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:45:55,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 5027 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:45:55,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:45:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:45:55,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:45:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:45:55,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:45:55,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129134158] [2021-11-19 14:45:55,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129134158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:45:55,732 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:45:55,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:45:55,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047529031] [2021-11-19 14:45:55,732 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:45:55,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:45:55,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:45:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:45:55,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:45:55,734 INFO L87 Difference]: Start difference. First operand 10863 states and 17756 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:45:57,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:45:59,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:00,237 INFO L93 Difference]: Finished difference Result 21727 states and 37364 transitions. [2021-11-19 14:46:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:46:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-11-19 14:46:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:00,346 INFO L225 Difference]: With dead ends: 21727 [2021-11-19 14:46:00,346 INFO L226 Difference]: Without dead ends: 10867 [2021-11-19 14:46:00,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:46:00,540 INFO L933 BasicCegarLoop]: 8641 mSDtfsCounter, 0 mSDsluCounter, 8637 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17278 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:00,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17278 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 14:46:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2021-11-19 14:46:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 10867. [2021-11-19 14:46:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10867 states, 8162 states have (on average 1.5276892918402352) internal successors, (12469), 8173 states have internal predecessors, (12469), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 105 states have return successors, (2692), 2591 states have call predecessors, (2692), 2593 states have call successors, (2692) [2021-11-19 14:46:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10867 states to 10867 states and 17760 transitions. [2021-11-19 14:46:02,904 INFO L78 Accepts]: Start accepts. Automaton has 10867 states and 17760 transitions. Word has length 78 [2021-11-19 14:46:02,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:02,906 INFO L470 AbstractCegarLoop]: Abstraction has 10867 states and 17760 transitions. [2021-11-19 14:46:02,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:46:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 10867 states and 17760 transitions. [2021-11-19 14:46:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 14:46:02,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:02,915 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:46:03,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:03,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:03,128 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2145203385, now seen corresponding path program 1 times [2021-11-19 14:46:03,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:03,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304491994] [2021-11-19 14:46:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:03,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:03,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:03,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:03,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:46:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:12,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 5048 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:12,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 14:46:12,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 14:46:13,119 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:13,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304491994] [2021-11-19 14:46:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304491994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:13,120 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:13,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:46:13,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727610047] [2021-11-19 14:46:13,120 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:13,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:46:13,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:13,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:46:13,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:13,122 INFO L87 Difference]: Start difference. First operand 10867 states and 17760 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:46:15,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:17,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:46:19,209 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 [] [2021-11-19 14:46:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:20,013 INFO L93 Difference]: Finished difference Result 21735 states and 37372 transitions. [2021-11-19 14:46:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:46:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2021-11-19 14:46:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:20,132 INFO L225 Difference]: With dead ends: 21735 [2021-11-19 14:46:20,133 INFO L226 Difference]: Without dead ends: 10871 [2021-11-19 14:46:20,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:20,324 INFO L933 BasicCegarLoop]: 8638 mSDtfsCounter, 37 mSDsluCounter, 25871 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 34509 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:20,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 34509 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 6.1s Time] [2021-11-19 14:46:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-11-19 14:46:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 10871. [2021-11-19 14:46:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10871 states, 8166 states have (on average 1.5274308106784227) internal successors, (12473), 8177 states have internal predecessors, (12473), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 105 states have return successors, (2692), 2591 states have call predecessors, (2692), 2593 states have call successors, (2692) [2021-11-19 14:46:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10871 states to 10871 states and 17764 transitions. [2021-11-19 14:46:22,352 INFO L78 Accepts]: Start accepts. Automaton has 10871 states and 17764 transitions. Word has length 79 [2021-11-19 14:46:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:22,353 INFO L470 AbstractCegarLoop]: Abstraction has 10871 states and 17764 transitions. [2021-11-19 14:46:22,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:46:22,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10871 states and 17764 transitions. [2021-11-19 14:46:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:46:22,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:22,360 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:46:22,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:22,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:22,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1885835249, now seen corresponding path program 1 times [2021-11-19 14:46:22,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:22,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197564716] [2021-11-19 14:46:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:22,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:22,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:22,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:46:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:32,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 5055 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:46:32,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:46:32,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:46:33,341 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:33,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197564716] [2021-11-19 14:46:33,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197564716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:33,341 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:46:33,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480875116] [2021-11-19 14:46:33,342 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:33,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:33,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:33,343 INFO L87 Difference]: Start difference. First operand 10871 states and 17764 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 14:46:35,387 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 [] [2021-11-19 14:46:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:36,204 INFO L93 Difference]: Finished difference Result 21769 states and 37406 transitions. [2021-11-19 14:46:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2021-11-19 14:46:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:36,337 INFO L225 Difference]: With dead ends: 21769 [2021-11-19 14:46:36,337 INFO L226 Difference]: Without dead ends: 10901 [2021-11-19 14:46:36,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:36,505 INFO L933 BasicCegarLoop]: 8645 mSDtfsCounter, 8 mSDsluCounter, 34574 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43219 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:36,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 43219 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:46:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2021-11-19 14:46:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 10890. [2021-11-19 14:46:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 8181 states have (on average 1.5264637574868598) internal successors, (12488), 8192 states have internal predecessors, (12488), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (4285), 2595 states have call predecessors, (4285), 2593 states have call successors, (4285) [2021-11-19 14:46:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 19372 transitions. [2021-11-19 14:46:40,519 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 19372 transitions. Word has length 80 [2021-11-19 14:46:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:40,520 INFO L470 AbstractCegarLoop]: Abstraction has 10890 states and 19372 transitions. [2021-11-19 14:46:40,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 14:46:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 19372 transitions. [2021-11-19 14:46:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 14:46:40,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:40,541 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:46:40,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:40,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:40,756 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1432949235, now seen corresponding path program 1 times [2021-11-19 14:46:40,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:40,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155889719] [2021-11-19 14:46:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:40,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:40,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:40,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:40,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:46:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:50,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 5052 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:46:50,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:46:51,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:46:51,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:51,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155889719] [2021-11-19 14:46:51,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155889719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:51,544 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:51,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-19 14:46:51,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257561014] [2021-11-19 14:46:51,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:51,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:46:51,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:46:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:51,547 INFO L87 Difference]: Start difference. First operand 10890 states and 19372 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 14:46:53,581 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 [] [2021-11-19 14:46:54,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:54,368 INFO L93 Difference]: Finished difference Result 21796 states and 39022 transitions. [2021-11-19 14:46:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:54,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2021-11-19 14:46:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:54,496 INFO L225 Difference]: With dead ends: 21796 [2021-11-19 14:46:54,496 INFO L226 Difference]: Without dead ends: 10909 [2021-11-19 14:46:54,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:54,626 INFO L933 BasicCegarLoop]: 8646 mSDtfsCounter, 7 mSDsluCounter, 43223 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 51869 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:54,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 51869 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 14:46:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10909 states. [2021-11-19 14:46:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 10894. [2021-11-19 14:46:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 8185 states have (on average 1.5262064752596212) internal successors, (12492), 8192 states have internal predecessors, (12492), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (4285), 2599 states have call predecessors, (4285), 2593 states have call successors, (4285) [2021-11-19 14:46:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 19376 transitions. [2021-11-19 14:46:57,911 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 19376 transitions. Word has length 80 [2021-11-19 14:46:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:57,912 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 19376 transitions. [2021-11-19 14:46:57,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 7 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 14:46:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 19376 transitions. [2021-11-19 14:46:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 14:46:57,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:57,921 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:46:58,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:58,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:58,136 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1923976951, now seen corresponding path program 1 times [2021-11-19 14:46:58,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:58,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526718102] [2021-11-19 14:46:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:58,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:58,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:58,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:47:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:05,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 5031 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:47:05,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:06,331 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 14:47:06,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 [2021-11-19 14:47:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:47:06,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:47:07,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:07,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526718102] [2021-11-19 14:47:07,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526718102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:07,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:07,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2021-11-19 14:47:07,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113152184] [2021-11-19 14:47:07,314 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:07,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:47:07,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:07,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:47:07,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:47:07,315 INFO L87 Difference]: Start difference. First operand 10894 states and 19376 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-19 14:47:10,661 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 [] [2021-11-19 14:47:13,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:15,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:17,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:28,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:35,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:38,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:47:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:39,859 INFO L93 Difference]: Finished difference Result 21956 states and 39052 transitions. [2021-11-19 14:47:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 76 [2021-11-19 14:47:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:39,970 INFO L225 Difference]: With dead ends: 21956 [2021-11-19 14:47:39,970 INFO L226 Difference]: Without dead ends: 11065 [2021-11-19 14:47:40,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:47:40,078 INFO L933 BasicCegarLoop]: 8666 mSDtfsCounter, 199 mSDsluCounter, 15876 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 24542 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:40,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 24542 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1506 Invalid, 5 Unknown, 0 Unchecked, 31.8s Time] [2021-11-19 14:47:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-19 14:47:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 11012. [2021-11-19 14:47:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11012 states, 8267 states have (on average 1.5249788314987298) internal successors, (12607), 8286 states have internal predecessors, (12607), 2625 states have call successors, (2625), 119 states have call predecessors, (2625), 119 states have return successors, (4321), 2610 states have call predecessors, (4321), 2619 states have call successors, (4321) [2021-11-19 14:47:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11012 states to 11012 states and 19553 transitions. [2021-11-19 14:47:43,519 INFO L78 Accepts]: Start accepts. Automaton has 11012 states and 19553 transitions. Word has length 76 [2021-11-19 14:47:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:43,520 INFO L470 AbstractCegarLoop]: Abstraction has 11012 states and 19553 transitions. [2021-11-19 14:47:43,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-19 14:47:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 11012 states and 19553 transitions. [2021-11-19 14:47:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-19 14:47:43,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:43,530 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 14:47:43,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-19 14:47:43,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:43,744 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -699764635, now seen corresponding path program 1 times [2021-11-19 14:47:43,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:43,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559190191] [2021-11-19 14:47:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:43,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:43,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:43,752 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:43,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_364ca52d-9fd6-4b9c-acdf-889195e5a296/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process