./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:33,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:33,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:33,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:33,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:33,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:33,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:33,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:33,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:33,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:33,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:33,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:33,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:33,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:33,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:33,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:33,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:33,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:33,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:33,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:33,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:33,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:33,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:33,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:33,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:33,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:33,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:33,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:33,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:33,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:33,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:33,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:33,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:33,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:33,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:33,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:33,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:33,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:33,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:33,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:33,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:33,666 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:06:33,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:33,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:33,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:33,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:33,694 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:33,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:33,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:33,695 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:06:33,695 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:33,695 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:33,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:06:33,696 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:06:33,696 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:33,696 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:06:33,696 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:06:33,696 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:06:33,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:33,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:06:33,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:33,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:06:33,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:33,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:06:33,698 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:33,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:06:33,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:33,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:06:33,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:33,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:33,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:33,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:33,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:33,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:06:33,701 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:06:33,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:06:33,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:06:33,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:33,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:33,702 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_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-12 23:06:33,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:33,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:33,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:33,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:33,969 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:33,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-12 23:06:34,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/879cccbca/ae71f9cd4cd9423ab6a46047a9118f7e/FLAG30a5b54a2 [2021-11-12 23:06:34,887 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:34,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-12 23:06:34,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/879cccbca/ae71f9cd4cd9423ab6a46047a9118f7e/FLAG30a5b54a2 [2021-11-12 23:06:35,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/879cccbca/ae71f9cd4cd9423ab6a46047a9118f7e [2021-11-12 23:06:35,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:35,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:35,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:35,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:35,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:35,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:35" (1/1) ... [2021-11-12 23:06:35,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646b28d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:35, skipping insertion in model container [2021-11-12 23:06:35,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:35" (1/1) ... [2021-11-12 23:06:35,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:35,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:36,239 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-12 23:06:36,517 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:06:36,518 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:06:36,607 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:06:36,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:36,732 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:06:36,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4f163f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:36, skipping insertion in model container [2021-11-12 23:06:36,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:36,733 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:06:36,735 INFO L158 Benchmark]: Toolchain (without parser) took 1691.90ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 51.5MB in the beginning and 72.7MB in the end (delta: -21.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-12 23:06:36,736 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 67.8MB in the end (delta: 21.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:06:36,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1687.55ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 51.5MB in the beginning and 72.7MB in the end (delta: -21.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2021-11-12 23:06:36,739 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 96.5MB. Free memory was 67.8MB in the beginning and 67.8MB in the end (delta: 21.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1687.55ms. Allocated memory was 96.5MB in the beginning and 121.6MB in the end (delta: 25.2MB). Free memory was 51.5MB in the beginning and 72.7MB in the end (delta: -21.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5870]: 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_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:39,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:39,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:39,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:39,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:39,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:39,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:39,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:39,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:39,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:39,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:39,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:39,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:39,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:39,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:39,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:39,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:39,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:39,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:39,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:39,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:39,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:39,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:39,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:39,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:39,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:39,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:39,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:39,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:39,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:39,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:39,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:39,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:39,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:39,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:39,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:39,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:39,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:39,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:39,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:39,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:39,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:06:39,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:39,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:39,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:39,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:39,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:39,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:39,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:39,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:39,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:39,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:39,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:39,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:39,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:06:39,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:39,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:06:39,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:39,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:06:39,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:06:39,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:06:39,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:39,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:06:39,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:39,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:06:39,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:39,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:39,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:39,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:39,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:06:39,195 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:06:39,195 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:06:39,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:06:39,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:39,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:39,196 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_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-12 23:06:39,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:39,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:39,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:39,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:39,580 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:39,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-12 23:06:39,659 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/03887f327/c887f19393964472a11c4cbdf260a593/FLAG5b5190bbb [2021-11-12 23:06:40,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:40,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-12 23:06:40,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/03887f327/c887f19393964472a11c4cbdf260a593/FLAG5b5190bbb [2021-11-12 23:06:41,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/data/03887f327/c887f19393964472a11c4cbdf260a593 [2021-11-12 23:06:41,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:41,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:41,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:41,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:41,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:41,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:41" (1/1) ... [2021-11-12 23:06:41,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3ceb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:41, skipping insertion in model container [2021-11-12 23:06:41,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:41" (1/1) ... [2021-11-12 23:06:41,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:41,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:42,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-12 23:06:42,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:42,858 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:06:42,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:43,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-12 23:06:43,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:43,171 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:06:43,341 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-12 23:06:43,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:43,661 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:06:43,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43 WrapperNode [2021-11-12 23:06:43,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:43,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:43,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:06:43,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:06:43,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:43,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:06:43,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:06:43,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:06:43,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:43,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:44,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:44,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:44,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:06:44,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:06:44,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:06:44,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:06:44,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (1/1) ... [2021-11-12 23:06:44,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:44,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:06:44,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:06:44,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:06:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:06:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-12 23:06:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-12 23:06:44,152 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-12 23:06:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:06:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:06:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:06:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:06:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:06:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2021-11-12 23:06:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2021-11-12 23:06:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:06:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:06:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:06:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:06:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-12 23:06:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-12 23:06:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-12 23:06:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-12 23:06:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-12 23:06:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-12 23:06:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-12 23:06:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-12 23:06:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:06:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:06:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-12 23:06:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-12 23:06:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-12 23:06:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-12 23:06:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-12 23:06:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_disconnected [2021-11-12 23:06:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_disconnected [2021-11-12 23:06:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-12 23:06:44,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-12 23:06:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_transmit [2021-11-12 23:06:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_transmit [2021-11-12 23:06:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_indication [2021-11-12 23:06:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_indication [2021-11-12 23:06:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-12 23:06:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-12 23:06:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 23:06:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 23:06:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:06:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:06:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:06:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:06:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:06:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:06:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:06:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:06:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_set_mac_address [2021-11-12 23:06:44,182 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_set_mac_address [2021-11-12 23:06:44,183 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:06:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:06:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:06:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-11-12 23:06:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-11-12 23:06:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2021-11-12 23:06:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2021-11-12 23:06:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure dev_net [2021-11-12 23:06:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_net [2021-11-12 23:06:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:06:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-12 23:06:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_get_x25_dev [2021-11-12 23:06:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_get_x25_dev [2021-11-12 23:06:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-12 23:06:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-12 23:06:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-12 23:06:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_connected [2021-11-12 23:06:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_connected [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:06:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:06:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-11-12 23:06:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-11-12 23:06:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 23:06:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 23:06:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 23:06:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 23:06:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:06:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-12 23:06:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-12 23:06:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:06:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:06:45,272 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:06:54,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:06:54,194 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 23:06:54,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:54 BoogieIcfgContainer [2021-11-12 23:06:54,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:06:54,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:06:54,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:06:54,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:06:54,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:06:41" (1/3) ... [2021-11-12 23:06:54,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc8348c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:54, skipping insertion in model container [2021-11-12 23:06:54,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:43" (2/3) ... [2021-11-12 23:06:54,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc8348c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:54, skipping insertion in model container [2021-11-12 23:06:54,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:54" (3/3) ... [2021-11-12 23:06:54,210 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-12 23:06:54,215 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:06:54,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:06:54,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:06:54,292 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:06:54,292 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:06:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-12 23:06:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 23:06:54,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:54,375 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:54,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash -272515885, now seen corresponding path program 1 times [2021-11-12 23:06:54,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:54,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463704327] [2021-11-12 23:06:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:54,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:54,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:54,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:54,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:06:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:55,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:06:55,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-12 23:06:55,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-12 23:06:55,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:55,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463704327] [2021-11-12 23:06:55,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463704327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:55,910 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:55,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:06:55,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743644866] [2021-11-12 23:06:55,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:55,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:06:55,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:06:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:55,947 INFO L87 Difference]: Start difference. First operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:06:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:56,054 INFO L93 Difference]: Finished difference Result 1449 states and 2198 transitions. [2021-11-12 23:06:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:06:56,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 150 [2021-11-12 23:06:56,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:56,087 INFO L225 Difference]: With dead ends: 1449 [2021-11-12 23:06:56,087 INFO L226 Difference]: Without dead ends: 714 [2021-11-12 23:06:56,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:56,106 INFO L933 BasicCegarLoop]: 1067 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:56,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 8.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:06:56,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-11-12 23:06:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2021-11-12 23:06:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.467241379310345) internal successors, (851), 582 states have internal predecessors, (851), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-12 23:06:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1050 transitions. [2021-11-12 23:06:56,241 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1050 transitions. Word has length 150 [2021-11-12 23:06:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:56,241 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1050 transitions. [2021-11-12 23:06:56,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-12 23:06:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1050 transitions. [2021-11-12 23:06:56,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 23:06:56,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:56,250 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:56,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:56,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:56,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1960355613, now seen corresponding path program 1 times [2021-11-12 23:06:56,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:56,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931833254] [2021-11-12 23:06:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:56,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:56,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:56,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:06:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:57,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:06:57,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:06:57,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:06:57,849 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:57,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931833254] [2021-11-12 23:06:57,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931833254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:57,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:57,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:06:57,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038338695] [2021-11-12 23:06:57,851 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:57,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:06:57,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:06:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:06:57,854 INFO L87 Difference]: Start difference. First operand 714 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-12 23:06:58,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:58,357 INFO L93 Difference]: Finished difference Result 1802 states and 2704 transitions. [2021-11-12 23:06:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:06:58,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-12 23:06:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:58,372 INFO L225 Difference]: With dead ends: 1802 [2021-11-12 23:06:58,372 INFO L226 Difference]: Without dead ends: 1108 [2021-11-12 23:06:58,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:06:58,380 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1623 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.50ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:58,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2710 Invalid, 131 Unknown, 0 Unchecked, 18.50ms Time], IncrementalHoareTripleChecker [66 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 377.68ms Time] [2021-11-12 23:06:58,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-11-12 23:06:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 714. [2021-11-12 23:06:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.4637931034482758) internal successors, (849), 582 states have internal predecessors, (849), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-12 23:06:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1048 transitions. [2021-11-12 23:06:58,446 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1048 transitions. Word has length 150 [2021-11-12 23:06:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:58,447 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1048 transitions. [2021-11-12 23:06:58,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-12 23:06:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1048 transitions. [2021-11-12 23:06:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 23:06:58,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:58,452 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:58,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:58,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:58,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:58,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:58,674 INFO L85 PathProgramCache]: Analyzing trace with hash 147056539, now seen corresponding path program 1 times [2021-11-12 23:06:58,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:58,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749839922] [2021-11-12 23:06:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:58,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:58,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:58,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:06:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:59,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:06:59,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:06:59,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:00,006 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-12 23:07:00,006 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:00,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749839922] [2021-11-12 23:07:00,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749839922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:00,006 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:00,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:07:00,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519096644] [2021-11-12 23:07:00,007 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:07:00,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:07:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:00,008 INFO L87 Difference]: Start difference. First operand 714 states and 1048 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-12 23:07:02,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:02,963 INFO L93 Difference]: Finished difference Result 2736 states and 4038 transitions. [2021-11-12 23:07:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:07:02,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-12 23:07:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:02,980 INFO L225 Difference]: With dead ends: 2736 [2021-11-12 23:07:02,980 INFO L226 Difference]: Without dead ends: 2042 [2021-11-12 23:07:02,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:07:02,985 INFO L933 BasicCegarLoop]: 1228 mSDtfsCounter, 1960 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2677.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.19ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2771.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:02,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 3863 Invalid, 200 Unknown, 0 Unchecked, 17.19ms Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 2771.66ms Time] [2021-11-12 23:07:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-12 23:07:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2021-11-12 23:07:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1670 states have (on average 1.4796407185628742) internal successors, (2471), 1676 states have internal predecessors, (2471), 272 states have call successors, (272), 100 states have call predecessors, (272), 99 states have return successors, (271), 271 states have call predecessors, (271), 271 states have call successors, (271) [2021-11-12 23:07:03,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3014 transitions. [2021-11-12 23:07:03,122 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3014 transitions. Word has length 150 [2021-11-12 23:07:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:03,123 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 3014 transitions. [2021-11-12 23:07:03,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-12 23:07:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3014 transitions. [2021-11-12 23:07:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-12 23:07:03,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:03,130 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:03,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:07:03,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:03,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -716980191, now seen corresponding path program 1 times [2021-11-12 23:07:03,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:03,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410137287] [2021-11-12 23:07:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:03,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:03,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:03,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:07:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:04,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:07:04,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-12 23:07:04,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-11-12 23:07:05,297 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:05,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410137287] [2021-11-12 23:07:05,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410137287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:05,297 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:05,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:07:05,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362611135] [2021-11-12 23:07:05,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:05,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:07:05,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:07:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:07:05,299 INFO L87 Difference]: Start difference. First operand 2042 states and 3014 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:07:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:05,784 INFO L93 Difference]: Finished difference Result 6083 states and 9080 transitions. [2021-11-12 23:07:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:07:05,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 213 [2021-11-12 23:07:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:05,817 INFO L225 Difference]: With dead ends: 6083 [2021-11-12 23:07:05,818 INFO L226 Difference]: Without dead ends: 4047 [2021-11-12 23:07:05,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:07:05,830 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 994 mSDsluCounter, 6182 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 194.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 7472 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:05,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 7472 Invalid, 66 Unknown, 0 Unchecked, 19.50ms Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 222.43ms Time] [2021-11-12 23:07:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-11-12 23:07:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4035. [2021-11-12 23:07:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 3303 states have (on average 1.4825915834090222) internal successors, (4897), 3315 states have internal predecessors, (4897), 533 states have call successors, (533), 199 states have call predecessors, (533), 198 states have return successors, (598), 532 states have call predecessors, (598), 532 states have call successors, (598) [2021-11-12 23:07:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 6028 transitions. [2021-11-12 23:07:06,080 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 6028 transitions. Word has length 213 [2021-11-12 23:07:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:06,081 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 6028 transitions. [2021-11-12 23:07:06,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:07:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 6028 transitions. [2021-11-12 23:07:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-12 23:07:06,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:06,099 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:06,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:06,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:06,320 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1676192007, now seen corresponding path program 1 times [2021-11-12 23:07:06,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:06,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466508631] [2021-11-12 23:07:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:06,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:06,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:06,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:07:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:07,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:07:07,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-12 23:07:07,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-12 23:07:08,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:08,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466508631] [2021-11-12 23:07:08,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466508631] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:08,181 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:08,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:07:08,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616654509] [2021-11-12 23:07:08,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:08,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:07:08,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:07:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:08,184 INFO L87 Difference]: Start difference. First operand 4035 states and 6028 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:07:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:08,352 INFO L93 Difference]: Finished difference Result 6069 states and 9149 transitions. [2021-11-12 23:07:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:07:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 246 [2021-11-12 23:07:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:08,382 INFO L225 Difference]: With dead ends: 6069 [2021-11-12 23:07:08,382 INFO L226 Difference]: Without dead ends: 4047 [2021-11-12 23:07:08,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:08,391 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 5 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:08,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2086 Invalid, 4 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 11.84ms Time] [2021-11-12 23:07:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-11-12 23:07:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4047. [2021-11-12 23:07:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3312 states have (on average 1.481280193236715) internal successors, (4906), 3327 states have internal predecessors, (4906), 533 states have call successors, (533), 199 states have call predecessors, (533), 201 states have return successors, (604), 532 states have call predecessors, (604), 532 states have call successors, (604) [2021-11-12 23:07:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6043 transitions. [2021-11-12 23:07:08,650 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6043 transitions. Word has length 246 [2021-11-12 23:07:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:08,651 INFO L470 AbstractCegarLoop]: Abstraction has 4047 states and 6043 transitions. [2021-11-12 23:07:08,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:07:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6043 transitions. [2021-11-12 23:07:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-12 23:07:08,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:08,668 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:08,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:08,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2134173544, now seen corresponding path program 1 times [2021-11-12 23:07:08,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:08,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003712243] [2021-11-12 23:07:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:08,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:08,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:08,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:07:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:09,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:07:09,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-11-12 23:07:10,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-12 23:07:10,803 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:10,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003712243] [2021-11-12 23:07:10,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003712243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:10,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:10,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:07:10,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951071180] [2021-11-12 23:07:10,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:10,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:07:10,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:07:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:10,806 INFO L87 Difference]: Start difference. First operand 4047 states and 6043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 23:07:12,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:13,345 INFO L93 Difference]: Finished difference Result 11951 states and 17826 transitions. [2021-11-12 23:07:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:07:13,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 259 [2021-11-12 23:07:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:13,405 INFO L225 Difference]: With dead ends: 11951 [2021-11-12 23:07:13,405 INFO L226 Difference]: Without dead ends: 7924 [2021-11-12 23:07:13,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:07:13,422 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 948 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2132.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2170.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:13,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2769 Invalid, 65 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [24 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2170.27ms Time] [2021-11-12 23:07:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2021-11-12 23:07:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7912. [2021-11-12 23:07:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.476847592762956) internal successors, (9632), 6554 states have internal predecessors, (9632), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-12 23:07:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11722 transitions. [2021-11-12 23:07:13,936 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11722 transitions. Word has length 259 [2021-11-12 23:07:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:13,940 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11722 transitions. [2021-11-12 23:07:13,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-12 23:07:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11722 transitions. [2021-11-12 23:07:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-12 23:07:13,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:13,964 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:13,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:14,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:14,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash -623919255, now seen corresponding path program 1 times [2021-11-12 23:07:14,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:14,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522823104] [2021-11-12 23:07:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:14,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:14,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:14,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:07:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:14,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:07:14,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-12 23:07:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-12 23:07:18,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:18,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522823104] [2021-11-12 23:07:18,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522823104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:18,611 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:18,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-12 23:07:18,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048198183] [2021-11-12 23:07:18,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:07:18,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:07:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:07:18,616 INFO L87 Difference]: Start difference. First operand 7912 states and 11722 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:07:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:19,785 INFO L93 Difference]: Finished difference Result 15804 states and 23515 transitions. [2021-11-12 23:07:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:07:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) Word has length 256 [2021-11-12 23:07:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:19,850 INFO L225 Difference]: With dead ends: 15804 [2021-11-12 23:07:19,850 INFO L226 Difference]: Without dead ends: 7912 [2021-11-12 23:07:19,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:07:19,881 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 34 mSDsluCounter, 15519 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 421.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 16556 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.95ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 472.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:19,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 16556 Invalid, 135 Unknown, 0 Unchecked, 38.95ms Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 472.41ms Time] [2021-11-12 23:07:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-11-12 23:07:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7912. [2021-11-12 23:07:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.4731677399570684) internal successors, (9608), 6554 states have internal predecessors, (9608), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-12 23:07:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11698 transitions. [2021-11-12 23:07:20,343 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11698 transitions. Word has length 256 [2021-11-12 23:07:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:20,344 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11698 transitions. [2021-11-12 23:07:20,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:07:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11698 transitions. [2021-11-12 23:07:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-12 23:07:20,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:20,369 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:20,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:20,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:20,593 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:20,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1757628959, now seen corresponding path program 1 times [2021-11-12 23:07:20,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:20,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655107579] [2021-11-12 23:07:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:20,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:20,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:20,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:07:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:21,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 23:07:21,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-12 23:07:22,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-12 23:07:24,857 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:24,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655107579] [2021-11-12 23:07:24,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655107579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:24,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:24,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-12 23:07:24,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183478132] [2021-11-12 23:07:24,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:24,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:07:24,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:07:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:07:24,859 INFO L87 Difference]: Start difference. First operand 7912 states and 11698 transitions. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:07:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:25,807 INFO L93 Difference]: Finished difference Result 15804 states and 23395 transitions. [2021-11-12 23:07:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:07:25,809 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) Word has length 261 [2021-11-12 23:07:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:25,860 INFO L225 Difference]: With dead ends: 15804 [2021-11-12 23:07:25,860 INFO L226 Difference]: Without dead ends: 7912 [2021-11-12 23:07:25,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:07:25,886 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 30 mSDsluCounter, 14463 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 333.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15499 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.17ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:25,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 15499 Invalid, 123 Unknown, 0 Unchecked, 27.55ms Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 374.17ms Time] [2021-11-12 23:07:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-11-12 23:07:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7912. [2021-11-12 23:07:26,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.4713278135541246) internal successors, (9596), 6554 states have internal predecessors, (9596), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-12 23:07:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11686 transitions. [2021-11-12 23:07:26,315 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11686 transitions. Word has length 261 [2021-11-12 23:07:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:26,316 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11686 transitions. [2021-11-12 23:07:26,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:07:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11686 transitions. [2021-11-12 23:07:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-12 23:07:26,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:26,339 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:26,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:26,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:26,562 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash -904357656, now seen corresponding path program 1 times [2021-11-12 23:07:26,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:26,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563037387] [2021-11-12 23:07:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:26,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:26,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:26,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:26,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:07:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:07:27,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2021-11-12 23:07:27,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-12 23:07:28,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:28,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563037387] [2021-11-12 23:07:28,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563037387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:28,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:28,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-12 23:07:28,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554734768] [2021-11-12 23:07:28,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:28,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:07:28,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:28,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:07:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:07:28,684 INFO L87 Difference]: Start difference. First operand 7912 states and 11686 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:07:30,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:32,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:34,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:37,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:39,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:41,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:45,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:47,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:49,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:51,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:53,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:55,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:07:57,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:00,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:02,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:04,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:08,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:10,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:12,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:14,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:16,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:18,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:20,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:08:24,273 INFO L93 Difference]: Finished difference Result 20273 states and 30271 transitions. [2021-11-12 23:08:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:08:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 248 [2021-11-12 23:08:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:08:24,324 INFO L225 Difference]: With dead ends: 20273 [2021-11-12 23:08:24,324 INFO L226 Difference]: Without dead ends: 12381 [2021-11-12 23:08:24,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:08:24,349 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 3304 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 713 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53853.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.30ms SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54920.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:08:24,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3417 Valid, 4381 Invalid, 3520 Unknown, 0 Unchecked, 56.30ms Time], IncrementalHoareTripleChecker [713 Valid, 2784 Invalid, 23 Unknown, 0 Unchecked, 54920.08ms Time] [2021-11-12 23:08:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2021-11-12 23:08:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12211. [2021-11-12 23:08:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12211 states, 10000 states have (on average 1.4577) internal successors, (14577), 10045 states have internal predecessors, (14577), 1556 states have call successors, (1556), 619 states have call predecessors, (1556), 654 states have return successors, (1852), 1582 states have call predecessors, (1852), 1555 states have call successors, (1852) [2021-11-12 23:08:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 17985 transitions. [2021-11-12 23:08:24,940 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 17985 transitions. Word has length 248 [2021-11-12 23:08:24,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:08:24,942 INFO L470 AbstractCegarLoop]: Abstraction has 12211 states and 17985 transitions. [2021-11-12 23:08:24,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 23:08:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 17985 transitions. [2021-11-12 23:08:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-12 23:08:24,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:08:24,976 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:08:25,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:08:25,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:08:25,203 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:08:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:08:25,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1335723942, now seen corresponding path program 1 times [2021-11-12 23:08:25,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:08:25,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303662790] [2021-11-12 23:08:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:08:25,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:08:25,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:08:25,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:08:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:08:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:08:26,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:08:26,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:08:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 344 proven. 42 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2021-11-12 23:08:27,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:08:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-12 23:08:28,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:08:28,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303662790] [2021-11-12 23:08:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303662790] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:08:28,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:08:28,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2021-11-12 23:08:28,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287644652] [2021-11-12 23:08:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:08:28,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:08:28,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:08:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:08:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:08:28,900 INFO L87 Difference]: Start difference. First operand 12211 states and 17985 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 23:08:30,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:32,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:34,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:37,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:39,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:44,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:46,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:50,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:52,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:56,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:08:58,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:09:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:04,361 INFO L93 Difference]: Finished difference Result 35822 states and 54304 transitions. [2021-11-12 23:09:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:09:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) Word has length 284 [2021-11-12 23:09:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:04,531 INFO L225 Difference]: With dead ends: 35822 [2021-11-12 23:09:04,532 INFO L226 Difference]: Without dead ends: 27474 [2021-11-12 23:09:04,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:09:04,556 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 5976 mSDsluCounter, 6032 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 1546 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32497.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6028 SdHoareTripleChecker+Valid, 8230 SdHoareTripleChecker+Invalid, 5305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.82ms SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33956.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:04,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6028 Valid, 8230 Invalid, 5305 Unknown, 0 Unchecked, 61.82ms Time], IncrementalHoareTripleChecker [1546 Valid, 3748 Invalid, 11 Unknown, 0 Unchecked, 33956.79ms Time] [2021-11-12 23:09:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27474 states. [2021-11-12 23:09:05,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27474 to 20473. [2021-11-12 23:09:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20473 states, 16722 states have (on average 1.4552685085516086) internal successors, (24335), 16817 states have internal predecessors, (24335), 2616 states have call successors, (2616), 1039 states have call predecessors, (2616), 1134 states have return successors, (3419), 2676 states have call predecessors, (3419), 2615 states have call successors, (3419) [2021-11-12 23:09:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20473 states to 20473 states and 30370 transitions. [2021-11-12 23:09:05,953 INFO L78 Accepts]: Start accepts. Automaton has 20473 states and 30370 transitions. Word has length 284 [2021-11-12 23:09:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:05,954 INFO L470 AbstractCegarLoop]: Abstraction has 20473 states and 30370 transitions. [2021-11-12 23:09:05,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 23:09:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 20473 states and 30370 transitions. [2021-11-12 23:09:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-12 23:09:05,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:05,991 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:06,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:06,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:06,217 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash 795646932, now seen corresponding path program 1 times [2021-11-12 23:09:06,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:06,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533405020] [2021-11-12 23:09:06,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:06,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:06,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:06,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:06,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:09:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:09:07,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-12 23:09:07,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-12 23:09:08,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:08,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533405020] [2021-11-12 23:09:08,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533405020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:08,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:08,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:09:08,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672339374] [2021-11-12 23:09:08,345 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:08,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:09:08,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:08,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:09:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:09:08,347 INFO L87 Difference]: Start difference. First operand 20473 states and 30370 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-12 23:09:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:09,404 INFO L93 Difference]: Finished difference Result 37239 states and 55660 transitions. [2021-11-12 23:09:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:09:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 283 [2021-11-12 23:09:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:09,613 INFO L225 Difference]: With dead ends: 37239 [2021-11-12 23:09:09,613 INFO L226 Difference]: Without dead ends: 20677 [2021-11-12 23:09:09,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:09:09,641 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 33 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4156 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.58ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:09,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 4156 Invalid, 47 Unknown, 0 Unchecked, 4.58ms Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 121.40ms Time] [2021-11-12 23:09:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20677 states. [2021-11-12 23:09:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20677 to 20551. [2021-11-12 23:09:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20551 states, 16800 states have (on average 1.455297619047619) internal successors, (24449), 16895 states have internal predecessors, (24449), 2616 states have call successors, (2616), 1039 states have call predecessors, (2616), 1134 states have return successors, (3419), 2676 states have call predecessors, (3419), 2615 states have call successors, (3419) [2021-11-12 23:09:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20551 states to 20551 states and 30484 transitions. [2021-11-12 23:09:10,845 INFO L78 Accepts]: Start accepts. Automaton has 20551 states and 30484 transitions. Word has length 283 [2021-11-12 23:09:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:10,846 INFO L470 AbstractCegarLoop]: Abstraction has 20551 states and 30484 transitions. [2021-11-12 23:09:10,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-12 23:09:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 20551 states and 30484 transitions. [2021-11-12 23:09:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-12 23:09:10,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:10,879 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:10,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:11,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:11,095 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:11,096 INFO L85 PathProgramCache]: Analyzing trace with hash 184288859, now seen corresponding path program 1 times [2021-11-12 23:09:11,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:11,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901075557] [2021-11-12 23:09:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:11,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:11,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:11,098 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:11,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:09:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:09:23,377 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:09:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:09:33,997 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:09:33,997 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:09:33,998 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:09:34,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:34,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:34,210 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:34,214 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:09:34,383 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:09:34,386 INFO L158 Benchmark]: Toolchain (without parser) took 173362.59ms. Allocated memory was 56.6MB in the beginning and 631.2MB in the end (delta: 574.6MB). Free memory was 24.7MB in the beginning and 199.5MB in the end (delta: -174.9MB). Peak memory consumption was 399.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,387 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:34,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2622.54ms. Allocated memory was 56.6MB in the beginning and 140.5MB in the end (delta: 83.9MB). Free memory was 24.5MB in the beginning and 79.4MB in the end (delta: -54.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 205.48ms. Allocated memory is still 140.5MB. Free memory was 79.4MB in the beginning and 68.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,389 INFO L158 Benchmark]: Boogie Preprocessor took 202.07ms. Allocated memory is still 140.5MB. Free memory was 68.9MB in the beginning and 56.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,389 INFO L158 Benchmark]: RCFGBuilder took 10127.35ms. Allocated memory was 140.5MB in the beginning and 281.0MB in the end (delta: 140.5MB). Free memory was 56.3MB in the beginning and 152.0MB in the end (delta: -95.7MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,389 INFO L158 Benchmark]: TraceAbstraction took 160185.23ms. Allocated memory was 281.0MB in the beginning and 631.2MB in the end (delta: 350.2MB). Free memory was 152.0MB in the beginning and 199.5MB in the end (delta: -47.5MB). Peak memory consumption was 303.7MB. Max. memory is 16.1GB. [2021-11-12 23:09:34,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 37.4MB in the beginning and 37.3MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2622.54ms. Allocated memory was 56.6MB in the beginning and 140.5MB in the end (delta: 83.9MB). Free memory was 24.5MB in the beginning and 79.4MB in the end (delta: -54.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 205.48ms. Allocated memory is still 140.5MB. Free memory was 79.4MB in the beginning and 68.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 202.07ms. Allocated memory is still 140.5MB. Free memory was 68.9MB in the beginning and 56.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 10127.35ms. Allocated memory was 140.5MB in the beginning and 281.0MB in the end (delta: 140.5MB). Free memory was 56.3MB in the beginning and 152.0MB in the end (delta: -95.7MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * TraceAbstraction took 160185.23ms. Allocated memory was 281.0MB in the beginning and 631.2MB in the end (delta: 350.2MB). Free memory was 152.0MB in the beginning and 199.5MB in the end (delta: -47.5MB). Peak memory consumption was 303.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:09:34,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b43f276-73cd-4890-aef6-38483079d8e1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null