./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--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/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--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8 --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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:26:20,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:26:20,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:26:20,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:26:20,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:26:20,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:26:20,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:26:20,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:26:20,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:26:20,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:26:20,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:26:20,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:26:20,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:26:20,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:26:20,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:26:20,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:26:20,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:26:20,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:26:20,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:26:20,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:26:20,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:26:20,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:26:20,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:26:20,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:26:20,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:26:20,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:26:20,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:26:20,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:26:20,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:26:20,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:26:20,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:26:20,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:26:20,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:26:20,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:26:20,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:26:20,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:26:20,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:26:20,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:26:20,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:26:20,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:26:20,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:26:20,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:26:20,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:26:20,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:26:20,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:26:20,800 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:26:20,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:26:20,800 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:26:20,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:26:20,801 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:26:20,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:26:20,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:26:20,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:26:20,801 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:26:20,802 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:26:20,802 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:26:20,802 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:26:20,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:26:20,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:26:20,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:26:20,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:26:20,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:26:20,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:26:20,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:26:20,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:26:20,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:26:20,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:26:20,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:26:20,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:26:20,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:20,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:26:20,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:26:20,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:26:20,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:26:20,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:26:20,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:26:20,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:26:20,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:26:20,808 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-07 01:26:21,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:26:21,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:26:21,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:26:21,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:26:21,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:26:21,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-07 01:26:21,279 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/77998cf95/b1089e29f87b4f14a88bbc4baa29a9f6/FLAG38c22f89b [2021-11-07 01:26:22,574 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:26:22,575 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-07 01:26:22,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/77998cf95/b1089e29f87b4f14a88bbc4baa29a9f6/FLAG38c22f89b [2021-11-07 01:26:22,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/77998cf95/b1089e29f87b4f14a88bbc4baa29a9f6 [2021-11-07 01:26:22,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:26:22,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:26:22,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:22,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:26:22,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:26:22,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:22" (1/1) ... [2021-11-07 01:26:22,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71411343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:22, skipping insertion in model container [2021-11-07 01:26:22,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:22" (1/1) ... [2021-11-07 01:26:22,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:26:22,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:24,254 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-07 01:26:25,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:26:25,334 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:26:25,336 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:26:25,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:25,637 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) [2021-11-07 01:26:25,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71b6e9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:25, skipping insertion in model container [2021-11-07 01:26:25,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:25,639 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:26:25,642 INFO L168 Benchmark]: Toolchain (without parser) took 2968.45 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 58.3 MB in the beginning and 60.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:25,643 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:26:25,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2964.29 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 58.1 MB in the beginning and 60.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:26:25,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 104.9 MB. Free memory is still 62.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2964.29 ms. Allocated memory was 104.9 MB in the beginning and 140.5 MB in the end (delta: 35.7 MB). Free memory was 58.1 MB in the beginning and 60.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5891]: 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/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--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8 --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 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:26:28,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:26:28,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:26:28,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:26:28,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:26:28,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:26:28,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:26:28,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:26:28,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:26:28,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:26:28,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:26:28,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:26:28,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:26:28,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:26:28,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:26:28,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:26:28,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:26:28,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:26:28,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:26:28,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:26:28,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:26:28,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:26:28,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:26:28,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:26:28,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:26:28,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:26:28,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:26:28,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:26:28,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:26:28,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:26:28,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:26:28,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:26:28,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:26:28,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:26:28,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:26:28,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:26:28,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:26:28,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:26:28,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:26:28,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:26:28,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:26:28,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:26:28,784 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:26:28,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:26:28,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:26:28,786 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:26:28,786 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:26:28,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:26:28,787 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:26:28,787 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:26:28,787 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:26:28,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:26:28,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:26:28,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:26:28,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:26:28,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:26:28,791 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:26:28,792 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:26:28,792 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:26:28,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:26:28,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:26:28,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:26:28,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:26:28,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:26:28,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:26:28,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:28,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:26:28,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:26:28,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:26:28,795 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:26:28,795 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:26:28,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:26:28,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:26:28,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:26:28,796 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26d71a6766df17a2d23a86b348a9251fef4bcae90cf6020641e74c486ac2b1eb [2021-11-07 01:26:29,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:26:29,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:26:29,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:26:29,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:26:29,328 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:26:29,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-07 01:26:29,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/2be3a09c5/963eed499def4b8fbba76b785c07b0a5/FLAGb2be01639 [2021-11-07 01:26:30,715 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:26:30,716 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-07 01:26:30,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/2be3a09c5/963eed499def4b8fbba76b785c07b0a5/FLAGb2be01639 [2021-11-07 01:26:30,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/data/2be3a09c5/963eed499def4b8fbba76b785c07b0a5 [2021-11-07 01:26:30,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:26:30,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:26:30,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:30,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:26:30,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:26:30,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:30" (1/1) ... [2021-11-07 01:26:30,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e76be52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:30, skipping insertion in model container [2021-11-07 01:26:30,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:26:30" (1/1) ... [2021-11-07 01:26:31,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:26:31,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:32,822 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-07 01:26:34,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:34,404 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:26:34,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:26:34,807 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-07 01:26:35,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:35,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:26:35,407 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_3e8ee229-be7f-4700-8fef-b64caa2158fc/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i[172824,172837] [2021-11-07 01:26:35,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:26:36,169 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:26:36,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36 WrapperNode [2021-11-07 01:26:36,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:26:36,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:36,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:26:36,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:26:36,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:36,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:36,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:26:36,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:26:36,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:26:36,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:26:36,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:36,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:36,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:36,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:37,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:37,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:37,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:37,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:26:37,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:26:37,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:26:37,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:26:37,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (1/1) ... [2021-11-07 01:26:37,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:26:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:26:37,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:26:37,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:26:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:26:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:26:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:26:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:26:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:26:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:26:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 01:26:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:26:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:26:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 01:26:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:26:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:26:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:26:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:26:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:26:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:26:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:26:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:26:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:26:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:26:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:26:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:26:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:26:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:26:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:26:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:26:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:26:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:26:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:26:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:26:37,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:28:17,196 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:28:17,197 INFO L299 CfgBuilder]: Removed 3362 assume(true) statements. [2021-11-07 01:28:17,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:17 BoogieIcfgContainer [2021-11-07 01:28:17,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:28:17,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:28:17,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:28:17,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:28:17,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:26:30" (1/3) ... [2021-11-07 01:28:17,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e01eb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:17, skipping insertion in model container [2021-11-07 01:28:17,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:26:36" (2/3) ... [2021-11-07 01:28:17,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e01eb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:28:17, skipping insertion in model container [2021-11-07 01:28:17,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:28:17" (3/3) ... [2021-11-07 01:28:17,215 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--smsc--smsc9420.ko-entry_point.cil.out.i [2021-11-07 01:28:17,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:28:17,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:28:17,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:28:17,300 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 [2021-11-07 01:28:17,300 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:28:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 2776 states, 2774 states have (on average 1.3193943763518385) internal successors, (3660), 2775 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 01:28:17,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:17,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:17,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:17,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1461368549, now seen corresponding path program 1 times [2021-11-07 01:28:17,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:17,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093580553] [2021-11-07 01:28:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:17,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:17,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:17,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:28:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:21,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:28:21,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:21,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:21,698 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:21,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093580553] [2021-11-07 01:28:21,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093580553] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:21,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:28:21,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:28:21,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760026273] [2021-11-07 01:28:21,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:21,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:21,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:21,753 INFO L87 Difference]: Start difference. First operand has 2776 states, 2774 states have (on average 1.3193943763518385) internal successors, (3660), 2775 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:22,087 INFO L93 Difference]: Finished difference Result 5549 states and 7317 transitions. [2021-11-07 01:28:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:22,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 01:28:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:22,134 INFO L225 Difference]: With dead ends: 5549 [2021-11-07 01:28:22,135 INFO L226 Difference]: Without dead ends: 2691 [2021-11-07 01:28:22,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:28:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-11-07 01:28:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2691. [2021-11-07 01:28:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2691 states, 2690 states have (on average 1.2762081784386616) internal successors, (3433), 2690 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2691 states to 2691 states and 3433 transitions. [2021-11-07 01:28:22,370 INFO L78 Accepts]: Start accepts. Automaton has 2691 states and 3433 transitions. Word has length 37 [2021-11-07 01:28:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:22,371 INFO L470 AbstractCegarLoop]: Abstraction has 2691 states and 3433 transitions. [2021-11-07 01:28:22,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2691 states and 3433 transitions. [2021-11-07 01:28:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:28:22,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:22,387 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:28:22,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:22,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:22,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash 92658683, now seen corresponding path program 1 times [2021-11-07 01:28:22,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:22,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538516385] [2021-11-07 01:28:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:22,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:22,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:22,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:28:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:28:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:26,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:27,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:27,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538516385] [2021-11-07 01:28:27,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538516385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:27,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1681396840] [2021-11-07 01:28:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:27,247 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:27,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:27,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-07 01:28:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:29,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:29,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:29,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:29,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1681396840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:29,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:29,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:28:29,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294976144] [2021-11-07 01:28:29,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:28:29,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:28:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:29,831 INFO L87 Difference]: Start difference. First operand 2691 states and 3433 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:32,854 INFO L93 Difference]: Finished difference Result 10374 states and 13296 transitions. [2021-11-07 01:28:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:28:32,855 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 01:28:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:32,916 INFO L225 Difference]: With dead ends: 10374 [2021-11-07 01:28:32,917 INFO L226 Difference]: Without dead ends: 7780 [2021-11-07 01:28:32,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:28:32,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2021-11-07 01:28:33,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7780. [2021-11-07 01:28:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7779 states have (on average 1.2812700861293225) internal successors, (9967), 7779 states have internal predecessors, (9967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 9967 transitions. [2021-11-07 01:28:33,359 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 9967 transitions. Word has length 39 [2021-11-07 01:28:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:33,359 INFO L470 AbstractCegarLoop]: Abstraction has 7780 states and 9967 transitions. [2021-11-07 01:28:33,360 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 9967 transitions. [2021-11-07 01:28:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:28:33,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:33,367 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 01:28:33,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:33,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:28:33,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:33,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:33,784 INFO L85 PathProgramCache]: Analyzing trace with hash 821729108, now seen corresponding path program 1 times [2021-11-07 01:28:33,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:33,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86370239] [2021-11-07 01:28:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:33,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:33,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:33,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:28:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:37,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:28:37,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:37,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:28:38,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:38,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86370239] [2021-11-07 01:28:38,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86370239] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:38,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1674540152] [2021-11-07 01:28:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:38,262 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:38,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:38,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 01:28:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:40,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:28:40,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:40,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:41,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1674540152] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:41,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:41,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5] total 13 [2021-11-07 01:28:41,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576525354] [2021-11-07 01:28:41,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:28:41,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:28:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:28:41,081 INFO L87 Difference]: Start difference. First operand 7780 states and 9967 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:42,525 INFO L93 Difference]: Finished difference Result 23144 states and 29684 transitions. [2021-11-07 01:28:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:28:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:28:42,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:42,644 INFO L225 Difference]: With dead ends: 23144 [2021-11-07 01:28:42,645 INFO L226 Difference]: Without dead ends: 15457 [2021-11-07 01:28:42,666 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:28:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15457 states. [2021-11-07 01:28:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15457 to 15457. [2021-11-07 01:28:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15457 states, 15456 states have (on average 1.281832298136646) internal successors, (19812), 15456 states have internal predecessors, (19812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15457 states to 15457 states and 19812 transitions. [2021-11-07 01:28:43,517 INFO L78 Accepts]: Start accepts. Automaton has 15457 states and 19812 transitions. Word has length 45 [2021-11-07 01:28:43,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:43,518 INFO L470 AbstractCegarLoop]: Abstraction has 15457 states and 19812 transitions. [2021-11-07 01:28:43,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15457 states and 19812 transitions. [2021-11-07 01:28:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 01:28:43,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:43,557 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:43,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:43,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:43,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:28:43,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:43,972 INFO L85 PathProgramCache]: Analyzing trace with hash 318491535, now seen corresponding path program 1 times [2021-11-07 01:28:43,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:43,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183999874] [2021-11-07 01:28:43,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:43,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:43,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:43,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:44,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:28:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:49,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:28:49,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:28:50,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:28:52,014 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:28:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183999874] [2021-11-07 01:28:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183999874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:28:52,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [700053047] [2021-11-07 01:28:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:52,015 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:28:52,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:28:52,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-07 01:28:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:28:54,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:28:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:28:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:55,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:28:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:28:56,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [700053047] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:28:56,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:28:56,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:28:56,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907343370] [2021-11-07 01:28:56,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:28:56,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:28:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:28:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:28:56,576 INFO L87 Difference]: Start difference. First operand 15457 states and 19812 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:58,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:28:58,104 INFO L93 Difference]: Finished difference Result 39049 states and 50205 transitions. [2021-11-07 01:28:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:28:58,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2021-11-07 01:28:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:28:58,196 INFO L225 Difference]: With dead ends: 39049 [2021-11-07 01:28:58,196 INFO L226 Difference]: Without dead ends: 23689 [2021-11-07 01:28:58,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:28:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23689 states. [2021-11-07 01:28:59,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23689 to 22675. [2021-11-07 01:28:59,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22675 states, 22674 states have (on average 1.2857016847490519) internal successors, (29152), 22674 states have internal predecessors, (29152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22675 states to 22675 states and 29152 transitions. [2021-11-07 01:28:59,217 INFO L78 Accepts]: Start accepts. Automaton has 22675 states and 29152 transitions. Word has length 203 [2021-11-07 01:28:59,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:28:59,219 INFO L470 AbstractCegarLoop]: Abstraction has 22675 states and 29152 transitions. [2021-11-07 01:28:59,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:28:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 22675 states and 29152 transitions. [2021-11-07 01:28:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 01:28:59,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:28:59,257 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:28:59,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:59,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:28:59,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:28:59,671 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:28:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:28:59,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1114887291, now seen corresponding path program 1 times [2021-11-07 01:28:59,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:28:59,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052563423] [2021-11-07 01:28:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:28:59,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:28:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:28:59,680 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:28:59,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:29:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:04,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:05,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:29:07,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:07,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052563423] [2021-11-07 01:29:07,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052563423] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:07,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [741055518] [2021-11-07 01:29:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:07,101 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:07,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:07,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:29:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:10,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:29:10,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:10,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:11,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [741055518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:11,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:11,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:29:11,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473176645] [2021-11-07 01:29:11,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:29:11,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:29:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:29:11,888 INFO L87 Difference]: Start difference. First operand 22675 states and 29152 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:13,116 INFO L93 Difference]: Finished difference Result 58175 states and 75004 transitions. [2021-11-07 01:29:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:29:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-07 01:29:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:13,399 INFO L225 Difference]: With dead ends: 58175 [2021-11-07 01:29:13,400 INFO L226 Difference]: Without dead ends: 35597 [2021-11-07 01:29:13,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:29:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35597 states. [2021-11-07 01:29:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35597 to 35070. [2021-11-07 01:29:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35070 states, 35069 states have (on average 1.290341897402264) internal successors, (45251), 35069 states have internal predecessors, (45251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35070 states to 35070 states and 45251 transitions. [2021-11-07 01:29:15,002 INFO L78 Accepts]: Start accepts. Automaton has 35070 states and 45251 transitions. Word has length 218 [2021-11-07 01:29:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:15,003 INFO L470 AbstractCegarLoop]: Abstraction has 35070 states and 45251 transitions. [2021-11-07 01:29:15,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 35070 states and 45251 transitions. [2021-11-07 01:29:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-07 01:29:15,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:15,053 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:15,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:15,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:15,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:15,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:29:15,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1949233710, now seen corresponding path program 1 times [2021-11-07 01:29:15,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:15,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671541827] [2021-11-07 01:29:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:15,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:15,486 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:15,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:29:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:20,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:20,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:29:22,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:29:23,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:23,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671541827] [2021-11-07 01:29:23,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671541827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:23,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1167251763] [2021-11-07 01:29:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:23,365 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:23,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:23,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:23,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 01:29:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:26,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:29:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:29:28,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 01:29:29,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1167251763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:29,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:29:29,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67519113] [2021-11-07 01:29:29,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:29:29,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:29:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:29:29,716 INFO L87 Difference]: Start difference. First operand 35070 states and 45251 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:31,590 INFO L93 Difference]: Finished difference Result 104944 states and 135393 transitions. [2021-11-07 01:29:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:29:31,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2021-11-07 01:29:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:31,767 INFO L225 Difference]: With dead ends: 104944 [2021-11-07 01:29:31,767 INFO L226 Difference]: Without dead ends: 69971 [2021-11-07 01:29:31,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:29:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69971 states. [2021-11-07 01:29:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69971 to 64169. [2021-11-07 01:29:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64169 states, 64168 states have (on average 1.294866600174542) internal successors, (83089), 64168 states have internal predecessors, (83089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64169 states to 64169 states and 83089 transitions. [2021-11-07 01:29:34,820 INFO L78 Accepts]: Start accepts. Automaton has 64169 states and 83089 transitions. Word has length 235 [2021-11-07 01:29:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:34,822 INFO L470 AbstractCegarLoop]: Abstraction has 64169 states and 83089 transitions. [2021-11-07 01:29:34,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:34,822 INFO L276 IsEmpty]: Start isEmpty. Operand 64169 states and 83089 transitions. [2021-11-07 01:29:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-07 01:29:34,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:34,938 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:34,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:35,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:29:35,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:35,358 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:29:35,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1579196074, now seen corresponding path program 1 times [2021-11-07 01:29:35,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:35,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327667921] [2021-11-07 01:29:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:35,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:35,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:35,365 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:35,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:29:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:29:40,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:29:42,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 01:29:43,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:43,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327667921] [2021-11-07 01:29:43,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327667921] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:29:43,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1529512721] [2021-11-07 01:29:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:43,509 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:43,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:29:43,510 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:29:43,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-07 01:29:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:46,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:29:46,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:47,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:29:49,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1529512721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:49,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:29:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:29:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894182931] [2021-11-07 01:29:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:49,040 INFO L87 Difference]: Start difference. First operand 64169 states and 83089 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:54,689 INFO L93 Difference]: Finished difference Result 174337 states and 226704 transitions. [2021-11-07 01:29:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:54,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2021-11-07 01:29:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:54,962 INFO L225 Difference]: With dead ends: 174337 [2021-11-07 01:29:54,962 INFO L226 Difference]: Without dead ends: 110265 [2021-11-07 01:29:55,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:29:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110265 states. [2021-11-07 01:29:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110265 to 110253. [2021-11-07 01:29:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110253 states, 110252 states have (on average 1.3017541631897833) internal successors, (143521), 110252 states have internal predecessors, (143521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110253 states to 110253 states and 143521 transitions. [2021-11-07 01:29:59,454 INFO L78 Accepts]: Start accepts. Automaton has 110253 states and 143521 transitions. Word has length 236 [2021-11-07 01:29:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:59,455 INFO L470 AbstractCegarLoop]: Abstraction has 110253 states and 143521 transitions. [2021-11-07 01:29:59,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:29:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 110253 states and 143521 transitions. [2021-11-07 01:29:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 01:29:59,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:59,560 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:29:59,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:59,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-07 01:29:59,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:59,983 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:29:59,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1431904789, now seen corresponding path program 1 times [2021-11-07 01:29:59,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:59,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460450424] [2021-11-07 01:29:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:59,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:59,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:59,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:00,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:30:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:05,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:05,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:30:06,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:30:08,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:08,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460450424] [2021-11-07 01:30:08,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460450424] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:08,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40225448] [2021-11-07 01:30:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:08,236 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:08,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:08,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:30:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:11,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:11,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 01:30:12,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-07 01:30:14,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [40225448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:14,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:14,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-07 01:30:14,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615656954] [2021-11-07 01:30:14,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:14,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:30:14,013 INFO L87 Difference]: Start difference. First operand 110253 states and 143521 transitions. Second operand has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:21,913 INFO L93 Difference]: Finished difference Result 272369 states and 354788 transitions. [2021-11-07 01:30:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:30:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-07 01:30:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:22,322 INFO L225 Difference]: With dead ends: 272369 [2021-11-07 01:30:22,323 INFO L226 Difference]: Without dead ends: 162213 [2021-11-07 01:30:22,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:30:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162213 states. [2021-11-07 01:30:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162213 to 110277. [2021-11-07 01:30:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110277 states, 110276 states have (on average 1.3015796728209221) internal successors, (143533), 110276 states have internal predecessors, (143533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110277 states to 110277 states and 143533 transitions. [2021-11-07 01:30:27,882 INFO L78 Accepts]: Start accepts. Automaton has 110277 states and 143533 transitions. Word has length 284 [2021-11-07 01:30:27,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:27,883 INFO L470 AbstractCegarLoop]: Abstraction has 110277 states and 143533 transitions. [2021-11-07 01:30:27,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.333333333333336) internal successors, (272), 6 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 110277 states and 143533 transitions. [2021-11-07 01:30:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-07 01:30:28,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:28,010 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:28,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 01:30:28,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:28,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:28,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash 471850984, now seen corresponding path program 1 times [2021-11-07 01:30:28,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:28,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248653217] [2021-11-07 01:30:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:28,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:28,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:28,443 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:28,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:30:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:33,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:33,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:30:35,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:30:36,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:36,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248653217] [2021-11-07 01:30:36,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248653217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:30:36,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [217067448] [2021-11-07 01:30:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:36,906 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:30:36,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:30:36,908 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:30:36,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:30:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:40,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:30:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:30:42,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:30:43,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [217067448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:43,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:30:43,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:30:43,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129554125] [2021-11-07 01:30:43,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:30:43,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:43,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:30:43,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:43,336 INFO L87 Difference]: Start difference. First operand 110277 states and 143533 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:47,263 INFO L93 Difference]: Finished difference Result 220601 states and 287126 transitions. [2021-11-07 01:30:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:30:47,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2021-11-07 01:30:47,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:47,665 INFO L225 Difference]: With dead ends: 220601 [2021-11-07 01:30:47,665 INFO L226 Difference]: Without dead ends: 110421 [2021-11-07 01:30:47,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:30:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110421 states. [2021-11-07 01:30:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110421 to 110289. [2021-11-07 01:30:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110289 states, 110288 states have (on average 1.3015468591324533) internal successors, (143545), 110288 states have internal predecessors, (143545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110289 states to 110289 states and 143545 transitions. [2021-11-07 01:30:52,160 INFO L78 Accepts]: Start accepts. Automaton has 110289 states and 143545 transitions. Word has length 321 [2021-11-07 01:30:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:52,160 INFO L470 AbstractCegarLoop]: Abstraction has 110289 states and 143545 transitions. [2021-11-07 01:30:52,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 110289 states and 143545 transitions. [2021-11-07 01:30:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-07 01:30:52,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:52,497 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:30:52,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:52,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:52,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:52,913 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:30:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash 355886438, now seen corresponding path program 1 times [2021-11-07 01:30:52,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:52,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115063087] [2021-11-07 01:30:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:52,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:52,919 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:52,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:30:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:58,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:30:58,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:30:59,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 01:31:01,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:31:01,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115063087] [2021-11-07 01:31:01,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115063087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:31:01,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36619806] [2021-11-07 01:31:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:31:01,013 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:31:01,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:31:01,013 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:31:01,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e8ee229-be7f-4700-8fef-b64caa2158fc/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-07 01:31:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:31:04,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:31:04,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:31:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 01:31:07,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:31:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 01:31:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36619806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:31:09,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:31:09,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:31:09,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364288125] [2021-11-07 01:31:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:31:09,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:31:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:31:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:31:09,244 INFO L87 Difference]: Start difference. First operand 110289 states and 143545 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:31:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:31:15,831 INFO L93 Difference]: Finished difference Result 330601 states and 430275 transitions. [2021-11-07 01:31:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:31:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2021-11-07 01:31:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:31:16,251 INFO L225 Difference]: With dead ends: 330601 [2021-11-07 01:31:16,251 INFO L226 Difference]: Without dead ends: 220409 [2021-11-07 01:31:16,382 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1280 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:31:16,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220409 states.