./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.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_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/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_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/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_d39c95c0-b431-47bf-b68a-abde3ac66205/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 afcb5021e5e481beab65460a6812c8dbe401f7b06cf3fcadf18504395cd90d4a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:59:56,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:59:56,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:59:56,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:59:56,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:59:56,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:59:56,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:59:56,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:59:56,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:59:56,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:59:56,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:59:56,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:59:56,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:59:56,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:59:56,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:59:56,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:59:56,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:59:56,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:59:56,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:59:56,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:59:56,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:59:56,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:59:56,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:59:56,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:59:56,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:59:56,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:59:56,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:59:56,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:59:56,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:59:56,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:59:56,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:59:56,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:59:56,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:59:56,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:59:56,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:59:56,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:59:56,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:59:56,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:59:56,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:59:56,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:59:56,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:59:56,536 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:59:56,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:59:56,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:59:56,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:59:56,594 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:59:56,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:59:56,595 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:59:56,595 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:59:56,596 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:59:56,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:59:56,596 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:59:56,598 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:59:56,598 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:59:56,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:59:56,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:59:56,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:59:56,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:59:56,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:59:56,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:59:56,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:59:56,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:59:56,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:59:56,603 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:59:56,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:59:56,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:59:56,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:59:56,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:59:56,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:59:56,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:59:56,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:59:56,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:59:56,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:59:56,609 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:59:56,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:59:56,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:59:56,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:59:56,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:59:56,611 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_d39c95c0-b431-47bf-b68a-abde3ac66205/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afcb5021e5e481beab65460a6812c8dbe401f7b06cf3fcadf18504395cd90d4a [2021-11-07 00:59:57,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:59:57,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:59:57,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:59:57,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:59:57,061 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:59:57,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i [2021-11-07 00:59:57,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/1dade56c9/feb273f034e44c869b0ce3699abb616d/FLAG550a8d5d7 [2021-11-07 00:59:58,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:59:58,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i [2021-11-07 00:59:58,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/1dade56c9/feb273f034e44c869b0ce3699abb616d/FLAG550a8d5d7 [2021-11-07 00:59:58,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/1dade56c9/feb273f034e44c869b0ce3699abb616d [2021-11-07 00:59:58,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:59:58,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:59:58,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:59:58,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:59:58,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:59:58,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:58" (1/1) ... [2021-11-07 00:59:58,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be6801c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:58, skipping insertion in model container [2021-11-07 00:59:58,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:58" (1/1) ... [2021-11-07 00:59:58,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:59:58,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:00:00,137 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_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i[136556,136569] [2021-11-07 01:00:00,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:00,303 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 01:00:00,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21f4430c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:00, skipping insertion in model container [2021-11-07 01:00:00,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:00:00,305 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:00:00,308 INFO L168 Benchmark]: Toolchain (without parser) took 1690.71 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 58.1 MB in the beginning and 93.8 MB in the end (delta: -35.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:00:00,308 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:00:00,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1685.17 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 57.9 MB in the beginning and 93.8 MB in the end (delta: -36.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:00:00,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1685.17 ms. Allocated memory was 107.0 MB in the beginning and 132.1 MB in the end (delta: 25.2 MB). Free memory was 57.9 MB in the beginning and 93.8 MB in the end (delta: -36.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2843]: 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_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/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_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/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_d39c95c0-b431-47bf-b68a-abde3ac66205/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 afcb5021e5e481beab65460a6812c8dbe401f7b06cf3fcadf18504395cd90d4a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:00:03,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:00:03,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:00:03,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:00:03,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:00:03,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:00:03,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:00:03,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:00:03,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:00:03,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:00:03,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:00:03,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:00:03,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:00:03,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:00:03,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:00:03,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:00:03,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:00:03,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:00:03,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:00:03,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:00:03,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:00:03,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:00:03,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:00:03,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:00:03,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:00:03,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:00:03,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:00:03,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:00:03,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:00:03,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:00:03,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:00:03,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:00:03,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:00:03,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:00:03,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:00:03,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:00:03,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:00:03,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:00:03,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:00:03,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:00:03,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:00:03,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:00:03,349 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:00:03,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:00:03,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:00:03,352 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:00:03,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:00:03,353 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:00:03,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:00:03,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:00:03,354 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:00:03,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:00:03,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:00:03,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:00:03,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:00:03,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:00:03,359 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:00:03,359 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:00:03,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:00:03,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:00:03,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:00:03,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:00:03,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:00:03,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:00:03,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:00:03,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:00:03,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:00:03,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:00:03,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:00:03,364 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:00:03,364 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:03,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:00:03,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:00:03,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:00:03,366 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_d39c95c0-b431-47bf-b68a-abde3ac66205/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afcb5021e5e481beab65460a6812c8dbe401f7b06cf3fcadf18504395cd90d4a [2021-11-07 01:00:03,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:00:03,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:00:03,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:00:03,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:00:03,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:00:03,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i [2021-11-07 01:00:04,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/7d7e8b9af/f0fe8254f78b4595bf4126fd91e61b49/FLAG0b0a1ee51 [2021-11-07 01:00:05,176 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:00:05,179 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i [2021-11-07 01:00:05,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/7d7e8b9af/f0fe8254f78b4595bf4126fd91e61b49/FLAG0b0a1ee51 [2021-11-07 01:00:05,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/data/7d7e8b9af/f0fe8254f78b4595bf4126fd91e61b49 [2021-11-07 01:00:05,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:00:05,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:00:05,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:00:05,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:00:05,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:00:05,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:00:05" (1/1) ... [2021-11-07 01:00:05,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6320568a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:05, skipping insertion in model container [2021-11-07 01:00:05,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:00:05" (1/1) ... [2021-11-07 01:00:05,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:00:05,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:00:07,031 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_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i[136556,136569] [2021-11-07 01:00:07,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:07,199 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:00:07,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:00:07,574 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_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i[136556,136569] [2021-11-07 01:00:07,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:07,607 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:00:07,866 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_d39c95c0-b431-47bf-b68a-abde3ac66205/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i[136556,136569] [2021-11-07 01:00:07,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:08,008 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:00:08,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08 WrapperNode [2021-11-07 01:00:08,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:00:08,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:00:08,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:00:08,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:00:08,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:08,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:08,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:00:08,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:00:08,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:00:08,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:00:08,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:08,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:00:09,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:00:09,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:00:09,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:00:09,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (1/1) ... [2021-11-07 01:00:09,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:00:09,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:09,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:00:09,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:00:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:00:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:00:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:00:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:00:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:00:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:00:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:00:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:00:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:00:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:00:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:00:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:00:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:00:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 01:00:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:00:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:00:09,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:04:00,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:04:00,132 INFO L299 CfgBuilder]: Removed 3068 assume(true) statements. [2021-11-07 01:04:00,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:00 BoogieIcfgContainer [2021-11-07 01:04:00,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:04:00,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:04:00,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:04:00,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:04:00,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:00:05" (1/3) ... [2021-11-07 01:04:00,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:00, skipping insertion in model container [2021-11-07 01:04:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:08" (2/3) ... [2021-11-07 01:04:00,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3626291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:00, skipping insertion in model container [2021-11-07 01:04:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:00" (3/3) ... [2021-11-07 01:04:00,149 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--pcmcia--pcmcia_rsrc.ko-entry_point.cil.out.i [2021-11-07 01:04:00,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:04:00,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2021-11-07 01:04:00,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:04:00,236 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 01:04:00,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2021-11-07 01:04:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 3431 states, 3379 states have (on average 1.433560224918615) internal successors, (4844), 3430 states have internal predecessors, (4844), 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 01:04:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 01:04:00,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:00,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:00,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1726912436, now seen corresponding path program 1 times [2021-11-07 01:04:00,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:00,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728131102] [2021-11-07 01:04:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:00,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:00,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:00,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:00,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:04:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:01,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:04:01,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:02,190 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 01:04:02,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:02,652 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 01:04:02,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:02,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728131102] [2021-11-07 01:04:02,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728131102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:02,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:02,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:04:02,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477852009] [2021-11-07 01:04:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:04:02,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:02,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:04:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:02,693 INFO L87 Difference]: Start difference. First operand has 3431 states, 3379 states have (on average 1.433560224918615) internal successors, (4844), 3430 states have internal predecessors, (4844), 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 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 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 01:04:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:02,889 INFO L93 Difference]: Finished difference Result 6858 states and 9683 transitions. [2021-11-07 01:04:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:04:02,890 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 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 93 [2021-11-07 01:04:02,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:02,936 INFO L225 Difference]: With dead ends: 6858 [2021-11-07 01:04:02,936 INFO L226 Difference]: Without dead ends: 3418 [2021-11-07 01:04:02,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2021-11-07 01:04:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3418. [2021-11-07 01:04:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3367 states have (on average 1.3739233739233738) internal successors, (4626), 3417 states have internal predecessors, (4626), 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 01:04:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 4626 transitions. [2021-11-07 01:04:03,148 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 4626 transitions. Word has length 93 [2021-11-07 01:04:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:03,149 INFO L470 AbstractCegarLoop]: Abstraction has 3418 states and 4626 transitions. [2021-11-07 01:04:03,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.5) internal successors, (93), 2 states have internal predecessors, (93), 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 01:04:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 4626 transitions. [2021-11-07 01:04:03,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 01:04:03,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:03,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:03,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:03,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:03,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 590752870, now seen corresponding path program 1 times [2021-11-07 01:04:03,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:03,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98600216] [2021-11-07 01:04:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:03,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:03,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:03,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:04:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:04,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:04:04,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:05,171 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 01:04:05,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:05,580 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 01:04:05,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:05,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98600216] [2021-11-07 01:04:05,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98600216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:05,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:05,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:04:05,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549715368] [2021-11-07 01:04:05,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:04:05,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:04:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:04:05,585 INFO L87 Difference]: Start difference. First operand 3418 states and 4626 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 01:04:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:06,972 INFO L93 Difference]: Finished difference Result 6830 states and 9275 transitions. [2021-11-07 01:04:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:04:06,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 93 [2021-11-07 01:04:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:06,996 INFO L225 Difference]: With dead ends: 6830 [2021-11-07 01:04:06,996 INFO L226 Difference]: Without dead ends: 3448 [2021-11-07 01:04:07,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 182 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 01:04:07,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2021-11-07 01:04:07,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3448. [2021-11-07 01:04:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3397 states have (on average 1.3706211362967324) internal successors, (4656), 3447 states have internal predecessors, (4656), 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 01:04:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 4656 transitions. [2021-11-07 01:04:07,129 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 4656 transitions. Word has length 93 [2021-11-07 01:04:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 4656 transitions. [2021-11-07 01:04:07,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 01:04:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 4656 transitions. [2021-11-07 01:04:07,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 01:04:07,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:07,133 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:07,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:07,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:07,358 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -669433756, now seen corresponding path program 1 times [2021-11-07 01:04:07,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:07,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153047953] [2021-11-07 01:04:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:07,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:07,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:07,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:07,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:04:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:08,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:08,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:09,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:10,332 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:10,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:10,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153047953] [2021-11-07 01:04:10,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153047953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:10,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [582240789] [2021-11-07 01:04:10,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:10,333 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:10,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:10,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:10,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:04:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:11,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:11,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:11,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [582240789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:12,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:12,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:12,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912281575] [2021-11-07 01:04:12,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:12,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:12,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:12,160 INFO L87 Difference]: Start difference. First operand 3448 states and 4656 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 01:04:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:12,539 INFO L93 Difference]: Finished difference Result 10015 states and 13574 transitions. [2021-11-07 01:04:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 117 [2021-11-07 01:04:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:12,586 INFO L225 Difference]: With dead ends: 10015 [2021-11-07 01:04:12,586 INFO L226 Difference]: Without dead ends: 6674 [2021-11-07 01:04:12,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2021-11-07 01:04:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 6557. [2021-11-07 01:04:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6557 states, 6506 states have (on average 1.3784199200737781) internal successors, (8968), 6556 states have internal predecessors, (8968), 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 01:04:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 8968 transitions. [2021-11-07 01:04:12,836 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 8968 transitions. Word has length 117 [2021-11-07 01:04:12,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:12,842 INFO L470 AbstractCegarLoop]: Abstraction has 6557 states and 8968 transitions. [2021-11-07 01:04:12,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 01:04:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 8968 transitions. [2021-11-07 01:04:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 01:04:12,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:12,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:12,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:13,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:13,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:13,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -293284465, now seen corresponding path program 1 times [2021-11-07 01:04:13,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:13,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926053519] [2021-11-07 01:04:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:13,282 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:13,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:13,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:04:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:14,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:14,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:15,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:16,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926053519] [2021-11-07 01:04:16,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926053519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:16,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [378087612] [2021-11-07 01:04:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:16,009 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:16,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:16,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 01:04:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:17,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:17,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:17,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:18,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [378087612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:18,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:18,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:18,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692231731] [2021-11-07 01:04:18,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:18,132 INFO L87 Difference]: Start difference. First operand 6557 states and 8968 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 01:04:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:18,678 INFO L93 Difference]: Finished difference Result 18262 states and 25051 transitions. [2021-11-07 01:04:18,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:18,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 119 [2021-11-07 01:04:18,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:18,764 INFO L225 Difference]: With dead ends: 18262 [2021-11-07 01:04:18,764 INFO L226 Difference]: Without dead ends: 11812 [2021-11-07 01:04:18,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11812 states. [2021-11-07 01:04:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11812 to 11725. [2021-11-07 01:04:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11725 states, 11674 states have (on average 1.3837587801953057) internal successors, (16154), 11724 states have internal predecessors, (16154), 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 01:04:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11725 states to 11725 states and 16154 transitions. [2021-11-07 01:04:19,243 INFO L78 Accepts]: Start accepts. Automaton has 11725 states and 16154 transitions. Word has length 119 [2021-11-07 01:04:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:19,244 INFO L470 AbstractCegarLoop]: Abstraction has 11725 states and 16154 transitions. [2021-11-07 01:04:19,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 01:04:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 11725 states and 16154 transitions. [2021-11-07 01:04:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:04:19,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:19,247 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:19,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:19,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:19,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:19,666 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:19,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 544641711, now seen corresponding path program 1 times [2021-11-07 01:04:19,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:19,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517092769] [2021-11-07 01:04:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:19,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:19,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:19,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:19,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:04:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:21,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:22,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:22,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:22,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517092769] [2021-11-07 01:04:22,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517092769] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:22,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1835189828] [2021-11-07 01:04:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:22,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:22,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:22,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:04:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:24,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:24,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:25,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:26,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1835189828] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:26,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:26,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800360843] [2021-11-07 01:04:26,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:26,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:26,003 INFO L87 Difference]: Start difference. First operand 11725 states and 16154 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 01:04:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:26,237 INFO L93 Difference]: Finished difference Result 11725 states and 16154 transitions. [2021-11-07 01:04:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 121 [2021-11-07 01:04:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:26,291 INFO L225 Difference]: With dead ends: 11725 [2021-11-07 01:04:26,292 INFO L226 Difference]: Without dead ends: 11723 [2021-11-07 01:04:26,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11723 states. [2021-11-07 01:04:26,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11723 to 11723. [2021-11-07 01:04:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11723 states, 11673 states have (on average 1.3837059881778464) internal successors, (16152), 11722 states have internal predecessors, (16152), 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 01:04:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11723 states to 11723 states and 16152 transitions. [2021-11-07 01:04:26,747 INFO L78 Accepts]: Start accepts. Automaton has 11723 states and 16152 transitions. Word has length 121 [2021-11-07 01:04:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:26,748 INFO L470 AbstractCegarLoop]: Abstraction has 11723 states and 16152 transitions. [2021-11-07 01:04:26,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 01:04:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 11723 states and 16152 transitions. [2021-11-07 01:04:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:04:26,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:26,753 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:26,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:27,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:27,164 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -295958554, now seen corresponding path program 1 times [2021-11-07 01:04:27,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:27,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306831705] [2021-11-07 01:04:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:27,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:27,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:27,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:04:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:28,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:28,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:29,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:29,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:29,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306831705] [2021-11-07 01:04:29,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306831705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:29,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [177051121] [2021-11-07 01:04:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:29,894 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:29,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:29,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:04:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:31,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:31,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:32,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [177051121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:32,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:32,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:32,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850821227] [2021-11-07 01:04:32,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:32,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:32,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:32,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:32,785 INFO L87 Difference]: Start difference. First operand 11723 states and 16152 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 01:04:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:33,059 INFO L93 Difference]: Finished difference Result 11723 states and 16152 transitions. [2021-11-07 01:04:33,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:33,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 122 [2021-11-07 01:04:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:33,092 INFO L225 Difference]: With dead ends: 11723 [2021-11-07 01:04:33,092 INFO L226 Difference]: Without dead ends: 11721 [2021-11-07 01:04:33,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11721 states. [2021-11-07 01:04:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11721 to 11721. [2021-11-07 01:04:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11721 states, 11672 states have (on average 1.383653187114462) internal successors, (16150), 11720 states have internal predecessors, (16150), 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 01:04:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11721 states to 11721 states and 16150 transitions. [2021-11-07 01:04:33,612 INFO L78 Accepts]: Start accepts. Automaton has 11721 states and 16150 transitions. Word has length 122 [2021-11-07 01:04:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:33,614 INFO L470 AbstractCegarLoop]: Abstraction has 11721 states and 16150 transitions. [2021-11-07 01:04:33,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 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 01:04:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 11721 states and 16150 transitions. [2021-11-07 01:04:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 01:04:33,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:33,616 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:33,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:34,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:34,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash -584762983, now seen corresponding path program 1 times [2021-11-07 01:04:34,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:34,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320925671] [2021-11-07 01:04:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:34,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:34,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:34,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:34,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:04:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:35,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:36,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:36,686 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:36,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320925671] [2021-11-07 01:04:36,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320925671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:36,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [766197288] [2021-11-07 01:04:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:36,687 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:36,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:36,693 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:36,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:04:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:38,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:38,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:38,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:39,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [766197288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:39,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:39,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:39,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674686300] [2021-11-07 01:04:39,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:39,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:39,580 INFO L87 Difference]: Start difference. First operand 11721 states and 16150 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 01:04:40,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:40,132 INFO L93 Difference]: Finished difference Result 22325 states and 31000 transitions. [2021-11-07 01:04:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:40,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 123 [2021-11-07 01:04:40,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:40,159 INFO L225 Difference]: With dead ends: 22325 [2021-11-07 01:04:40,160 INFO L226 Difference]: Without dead ends: 10707 [2021-11-07 01:04:40,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:40,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2021-11-07 01:04:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 10659. [2021-11-07 01:04:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10659 states, 10635 states have (on average 1.3947343676539727) internal successors, (14833), 10658 states have internal predecessors, (14833), 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 01:04:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10659 states to 10659 states and 14833 transitions. [2021-11-07 01:04:40,594 INFO L78 Accepts]: Start accepts. Automaton has 10659 states and 14833 transitions. Word has length 123 [2021-11-07 01:04:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:40,594 INFO L470 AbstractCegarLoop]: Abstraction has 10659 states and 14833 transitions. [2021-11-07 01:04:40,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 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 01:04:40,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10659 states and 14833 transitions. [2021-11-07 01:04:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 01:04:40,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:40,600 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:40,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:40,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:41,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:41,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:41,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2023266298, now seen corresponding path program 1 times [2021-11-07 01:04:41,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:41,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536861445] [2021-11-07 01:04:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:41,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:41,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:41,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:41,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:04:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:43,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:43,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:43,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:44,622 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:44,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536861445] [2021-11-07 01:04:44,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536861445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:44,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656158880] [2021-11-07 01:04:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:44,622 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:44,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:44,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:04:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:46,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:46,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:46,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:47,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656158880] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:47,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:47,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:47,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797248877] [2021-11-07 01:04:47,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:47,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:47,334 INFO L87 Difference]: Start difference. First operand 10659 states and 14833 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 01:04:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:47,996 INFO L93 Difference]: Finished difference Result 27418 states and 38188 transitions. [2021-11-07 01:04:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 171 [2021-11-07 01:04:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:48,044 INFO L225 Difference]: With dead ends: 27418 [2021-11-07 01:04:48,045 INFO L226 Difference]: Without dead ends: 16866 [2021-11-07 01:04:48,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16866 states. [2021-11-07 01:04:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16866 to 16789. [2021-11-07 01:04:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16789 states, 16765 states have (on average 1.3965404115717268) internal successors, (23413), 16788 states have internal predecessors, (23413), 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 01:04:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16789 states to 16789 states and 23413 transitions. [2021-11-07 01:04:48,893 INFO L78 Accepts]: Start accepts. Automaton has 16789 states and 23413 transitions. Word has length 171 [2021-11-07 01:04:48,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:48,894 INFO L470 AbstractCegarLoop]: Abstraction has 16789 states and 23413 transitions. [2021-11-07 01:04:48,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 01:04:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 16789 states and 23413 transitions. [2021-11-07 01:04:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-07 01:04:48,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:48,899 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:48,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:49,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 01:04:49,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:49,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:49,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash -273478798, now seen corresponding path program 1 times [2021-11-07 01:04:49,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:49,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757056054] [2021-11-07 01:04:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:49,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:49,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:49,317 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:49,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:04:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:51,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:04:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:52,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:04:53,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:53,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757056054] [2021-11-07 01:04:53,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757056054] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:53,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1518800121] [2021-11-07 01:04:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:53,068 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:53,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:04:53,068 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:04:53,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-07 01:04:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:55,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:04:55,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:55,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:04:56,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1518800121] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:56,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:04:56,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:04:56,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771862427] [2021-11-07 01:04:56,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:04:56,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:56,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:04:56,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:56,249 INFO L87 Difference]: Start difference. First operand 16789 states and 23413 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 01:04:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:57,024 INFO L93 Difference]: Finished difference Result 41459 states and 57851 transitions. [2021-11-07 01:04:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:04:57,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 173 [2021-11-07 01:04:57,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:57,095 INFO L225 Difference]: With dead ends: 41459 [2021-11-07 01:04:57,095 INFO L226 Difference]: Without dead ends: 24777 [2021-11-07 01:04:57,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:04:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24777 states. [2021-11-07 01:04:58,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24777 to 24737. [2021-11-07 01:04:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24737 states, 24713 states have (on average 1.3971998543276818) internal successors, (34529), 24736 states have internal predecessors, (34529), 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 01:04:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24737 states to 24737 states and 34529 transitions. [2021-11-07 01:04:58,399 INFO L78 Accepts]: Start accepts. Automaton has 24737 states and 34529 transitions. Word has length 173 [2021-11-07 01:04:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:58,400 INFO L470 AbstractCegarLoop]: Abstraction has 24737 states and 34529 transitions. [2021-11-07 01:04:58,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 01:04:58,400 INFO L276 IsEmpty]: Start isEmpty. Operand 24737 states and 34529 transitions. [2021-11-07 01:04:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 01:04:58,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:58,405 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:58,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:58,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:58,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:04:58,818 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:04:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1200050791, now seen corresponding path program 1 times [2021-11-07 01:04:58,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:58,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818060216] [2021-11-07 01:04:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:58,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:58,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:58,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:05:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:01,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:01,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:05:01,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 01:05:02,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:02,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818060216] [2021-11-07 01:05:02,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818060216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:02,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224821999] [2021-11-07 01:05:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:02,812 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:02,812 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:02,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:05:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:05,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:05,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 01:05:05,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-07 01:05:06,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [224821999] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:06,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:06,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:05:06,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289366911] [2021-11-07 01:05:06,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:05:06,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:05:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:06,099 INFO L87 Difference]: Start difference. First operand 24737 states and 34529 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 01:05:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:09,119 INFO L93 Difference]: Finished difference Result 24737 states and 34529 transitions. [2021-11-07 01:05:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:05:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 184 [2021-11-07 01:05:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:09,185 INFO L225 Difference]: With dead ends: 24737 [2021-11-07 01:05:09,186 INFO L226 Difference]: Without dead ends: 24721 [2021-11-07 01:05:09,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24721 states. [2021-11-07 01:05:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24721 to 24721. [2021-11-07 01:05:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24721 states, 24705 states have (on average 1.3947379073062134) internal successors, (34457), 24720 states have internal predecessors, (34457), 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 01:05:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24721 states to 24721 states and 34457 transitions. [2021-11-07 01:05:10,334 INFO L78 Accepts]: Start accepts. Automaton has 24721 states and 34457 transitions. Word has length 184 [2021-11-07 01:05:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:10,335 INFO L470 AbstractCegarLoop]: Abstraction has 24721 states and 34457 transitions. [2021-11-07 01:05:10,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 01:05:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24721 states and 34457 transitions. [2021-11-07 01:05:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 01:05:10,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:10,375 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:10,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:10,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:10,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:10,790 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:05:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1528881892, now seen corresponding path program 1 times [2021-11-07 01:05:10,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:10,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777298373] [2021-11-07 01:05:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:10,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:10,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:10,796 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:10,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:05:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:13,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:13,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:14,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:15,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:15,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777298373] [2021-11-07 01:05:15,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777298373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:15,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2118371495] [2021-11-07 01:05:15,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:15,969 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:15,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:15,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:15,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:05:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:18,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1760 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:05:18,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:19,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:20,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2118371495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:20,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:20,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:05:20,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205297220] [2021-11-07 01:05:20,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:05:20,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:05:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:20,110 INFO L87 Difference]: Start difference. First operand 24721 states and 34457 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:05:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:21,148 INFO L93 Difference]: Finished difference Result 49351 states and 68823 transitions. [2021-11-07 01:05:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:05:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 233 [2021-11-07 01:05:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:21,192 INFO L225 Difference]: With dead ends: 49351 [2021-11-07 01:05:21,192 INFO L226 Difference]: Without dead ends: 24737 [2021-11-07 01:05:21,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 921 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:05:21,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24737 states. [2021-11-07 01:05:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24737 to 24737. [2021-11-07 01:05:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24737 states, 24721 states have (on average 1.3944824238501679) internal successors, (34473), 24736 states have internal predecessors, (34473), 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 01:05:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24737 states to 24737 states and 34473 transitions. [2021-11-07 01:05:22,601 INFO L78 Accepts]: Start accepts. Automaton has 24737 states and 34473 transitions. Word has length 233 [2021-11-07 01:05:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:22,602 INFO L470 AbstractCegarLoop]: Abstraction has 24737 states and 34473 transitions. [2021-11-07 01:05:22,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 01:05:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 24737 states and 34473 transitions. [2021-11-07 01:05:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 01:05:22,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:22,645 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:22,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:22,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-07 01:05:23,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:23,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:05:23,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1972782566, now seen corresponding path program 1 times [2021-11-07 01:05:23,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:23,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23057418] [2021-11-07 01:05:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:23,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:23,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:23,065 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:23,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 01:05:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:26,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:27,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:28,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:28,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23057418] [2021-11-07 01:05:28,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23057418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:28,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2044436286] [2021-11-07 01:05:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:28,605 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:28,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:28,606 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:28,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-07 01:05:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:31,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:05:31,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:32,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:32,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2044436286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:32,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:32,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 01:05:32,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357617856] [2021-11-07 01:05:32,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:05:32,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:05:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:32,803 INFO L87 Difference]: Start difference. First operand 24737 states and 34473 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 01:05:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:34,967 INFO L93 Difference]: Finished difference Result 58157 states and 81685 transitions. [2021-11-07 01:05:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:05:34,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 233 [2021-11-07 01:05:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:35,030 INFO L225 Difference]: With dead ends: 58157 [2021-11-07 01:05:35,030 INFO L226 Difference]: Without dead ends: 33527 [2021-11-07 01:05:35,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:05:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33527 states. [2021-11-07 01:05:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33527 to 24737. [2021-11-07 01:05:36,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24737 states, 24721 states have (on average 1.3880101937623883) internal successors, (34313), 24736 states have internal predecessors, (34313), 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 01:05:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24737 states to 24737 states and 34313 transitions. [2021-11-07 01:05:36,670 INFO L78 Accepts]: Start accepts. Automaton has 24737 states and 34313 transitions. Word has length 233 [2021-11-07 01:05:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:36,671 INFO L470 AbstractCegarLoop]: Abstraction has 24737 states and 34313 transitions. [2021-11-07 01:05:36,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 01:05:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 24737 states and 34313 transitions. [2021-11-07 01:05:36,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 01:05:36,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:36,711 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:36,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:36,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-07 01:05:37,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:05:37,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:05:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1313251044, now seen corresponding path program 1 times [2021-11-07 01:05:37,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:05:37,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474357902] [2021-11-07 01:05:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:37,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:05:37,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:05:37,134 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:05:37,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-07 01:05:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:40,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:05:40,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:41,437 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:41,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:05:42,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:42,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474357902] [2021-11-07 01:05:42,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474357902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:42,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1009286160] [2021-11-07 01:05:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:42,557 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:05:42,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:05:42,568 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:05:42,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-07 01:05:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:46,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:05:46,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:47,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:05:48,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1009286160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:48,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:05:48,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 18 [2021-11-07 01:05:48,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119880244] [2021-11-07 01:05:48,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:05:48,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:05:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:05:48,054 INFO L87 Difference]: Start difference. First operand 24737 states and 34313 transitions. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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 01:07:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:57,438 INFO L93 Difference]: Finished difference Result 226499 states and 321395 transitions. [2021-11-07 01:07:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 01:07:57,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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 233 [2021-11-07 01:07:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:57,958 INFO L225 Difference]: With dead ends: 226499 [2021-11-07 01:07:57,958 INFO L226 Difference]: Without dead ends: 201869 [2021-11-07 01:07:58,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 922 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:07:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201869 states. [2021-11-07 01:08:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201869 to 25697. [2021-11-07 01:08:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25697 states, 25681 states have (on average 1.3735057046065184) internal successors, (35273), 25696 states have internal predecessors, (35273), 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 01:08:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25697 states to 25697 states and 35273 transitions. [2021-11-07 01:08:01,822 INFO L78 Accepts]: Start accepts. Automaton has 25697 states and 35273 transitions. Word has length 233 [2021-11-07 01:08:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:01,823 INFO L470 AbstractCegarLoop]: Abstraction has 25697 states and 35273 transitions. [2021-11-07 01:08:01,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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 01:08:01,823 INFO L276 IsEmpty]: Start isEmpty. Operand 25697 states and 35273 transitions. [2021-11-07 01:08:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 01:08:01,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:01,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:01,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-07 01:08:02,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:02,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:02,270 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 48 more)] === [2021-11-07 01:08:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -252464604, now seen corresponding path program 1 times [2021-11-07 01:08:02,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:02,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910704159] [2021-11-07 01:08:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:02,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:02,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:02,273 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:02,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-07 01:08:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:05,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:08:05,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:08:06,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-07 01:08:07,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:07,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910704159] [2021-11-07 01:08:07,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910704159] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:07,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1944338720] [2021-11-07 01:08:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:07,570 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:07,571 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:07,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d39c95c0-b431-47bf-b68a-abde3ac66205/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-07 01:08:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:10,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 01:08:10,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:08:12,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-07 01:08:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1944338720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:14,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:08:14,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [5, 5] total 27 [2021-11-07 01:08:14,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174800376] [2021-11-07 01:08:14,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:08:14,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:08:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:08:14,433 INFO L87 Difference]: Start difference. First operand 25697 states and 35273 transitions. Second operand has 21 states, 21 states have (on average 13.238095238095237) internal successors, (278), 21 states have internal predecessors, (278), 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)