./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/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_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/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 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:35:26,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:35:26,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:35:26,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:35:26,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:35:26,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:35:26,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:35:26,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:35:26,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:35:26,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:35:26,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:35:26,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:35:26,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:35:26,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:35:26,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:35:26,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:35:26,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:35:26,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:35:26,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:35:26,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:35:26,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:35:26,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:35:26,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:35:26,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:35:26,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:35:26,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:35:26,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:35:26,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:35:26,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:35:26,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:35:26,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:35:26,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:35:26,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:35:26,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:35:26,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:35:26,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:35:26,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:35:26,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:35:26,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:35:26,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:35:26,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:35:26,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:35:26,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:35:26,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:35:26,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:35:26,806 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:35:26,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:35:26,806 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:35:26,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:35:26,807 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:35:26,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:35:26,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:35:26,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:35:26,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:35:26,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:35:26,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:35:26,811 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:35:26,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:35:26,813 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:35:26,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:35:26,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:35:26,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:35:26,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:35:26,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:35:26,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:35:26,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:35:26,816 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:35:26,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:35:26,816 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:35:26,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:35:26,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:35:26,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:35:26,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:26,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:35:26,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:35:26,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:35:26,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:35:26,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:35:26,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:35:26,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:35:26,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:35:26,823 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_5dfaace0-f615-487b-b71d-8143dd879738/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-07 01:35:27,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:35:27,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:35:27,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:35:27,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:35:27,227 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:35:27,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-07 01:35:27,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/2e1c283e5/8157e9d9356b47c391edbac4b68769d8/FLAGc692b100e [2021-11-07 01:35:28,198 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:35:28,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-07 01:35:28,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/2e1c283e5/8157e9d9356b47c391edbac4b68769d8/FLAGc692b100e [2021-11-07 01:35:28,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/2e1c283e5/8157e9d9356b47c391edbac4b68769d8 [2021-11-07 01:35:28,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:35:28,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:35:28,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:28,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:35:28,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:35:28,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:28" (1/1) ... [2021-11-07 01:35:28,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d66bff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:28, skipping insertion in model container [2021-11-07 01:35:28,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:28" (1/1) ... [2021-11-07 01:35:28,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:35:28,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:29,146 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_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-07 01:35:29,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:29,442 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 01:35:29,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c17447d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:29, skipping insertion in model container [2021-11-07 01:35:29,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:29,444 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:35:29,447 INFO L168 Benchmark]: Toolchain (without parser) took 1096.40 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 52.2 MB in the beginning and 80.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:35:29,448 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:35:29,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1089.56 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 52.2 MB in the beginning and 80.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:35:29,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1089.56 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 52.2 MB in the beginning and 80.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/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_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/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 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:35:32,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:35:32,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:35:32,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:35:32,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:35:32,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:35:32,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:35:32,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:35:32,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:35:32,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:35:32,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:35:32,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:35:32,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:35:32,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:35:32,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:35:32,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:35:32,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:35:32,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:35:32,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:35:32,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:35:32,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:35:32,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:35:32,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:35:32,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:35:32,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:35:32,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:35:32,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:35:32,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:35:32,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:35:32,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:35:32,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:35:32,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:35:32,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:35:32,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:35:32,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:35:32,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:35:32,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:35:32,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:35:32,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:35:32,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:35:32,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:35:32,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:35:32,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:35:32,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:35:32,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:35:32,811 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:35:32,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:35:32,812 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:35:32,812 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:35:32,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:35:32,813 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:35:32,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:35:32,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:35:32,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:35:32,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:35:32,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:35:32,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:35:32,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:35:32,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:35:32,818 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:35:32,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:35:32,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:35:32,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:35:32,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:35:32,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:35:32,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:35:32,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:35:32,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:35:32,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:32,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:35:32,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:35:32,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:35:32,822 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:35:32,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:35:32,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:35:32,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:35:32,824 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:35:32,824 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_5dfaace0-f615-487b-b71d-8143dd879738/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-07 01:35:33,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:35:33,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:35:33,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:35:33,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:35:33,366 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:35:33,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-07 01:35:33,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/151da78f5/79111f0f1ea44641811df2b310ec8cea/FLAG74a234a12 [2021-11-07 01:35:34,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:35:34,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-07 01:35:34,406 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/151da78f5/79111f0f1ea44641811df2b310ec8cea/FLAG74a234a12 [2021-11-07 01:35:34,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/data/151da78f5/79111f0f1ea44641811df2b310ec8cea [2021-11-07 01:35:34,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:35:34,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:35:34,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:34,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:35:34,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:35:34,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:34" (1/1) ... [2021-11-07 01:35:34,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e84d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:34, skipping insertion in model container [2021-11-07 01:35:34,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:35:34" (1/1) ... [2021-11-07 01:35:34,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:35:34,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:35,234 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_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-07 01:35:35,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:35,559 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:35:35,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:35:35,625 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_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-07 01:35:35,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:35,770 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:35:35,823 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_5dfaace0-f615-487b-b71d-8143dd879738/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-07 01:35:35,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:35:35,974 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:35:35,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35 WrapperNode [2021-11-07 01:35:35,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:35:35,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:35:35,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:35:35,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:35:35,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:35:36,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:35:36,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:35:36,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:35:36,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:35:36,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:35:36,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:35:36,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:35:36,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (1/1) ... [2021-11-07 01:35:36,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:35:36,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:35:36,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:35:36,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:35:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:35:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:35:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:35:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:35:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:35:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:35:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:35:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:35:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:35:36,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:35:50,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:35:50,002 INFO L299 CfgBuilder]: Removed 98 assume(true) statements. [2021-11-07 01:35:50,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:50 BoogieIcfgContainer [2021-11-07 01:35:50,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:35:50,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:35:50,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:35:50,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:35:50,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:35:34" (1/3) ... [2021-11-07 01:35:50,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618c1834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:50, skipping insertion in model container [2021-11-07 01:35:50,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:35:35" (2/3) ... [2021-11-07 01:35:50,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618c1834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:35:50, skipping insertion in model container [2021-11-07 01:35:50,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:35:50" (3/3) ... [2021-11-07 01:35:50,019 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2021-11-07 01:35:50,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:35:50,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:35:50,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:35:50,107 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 01:35:50,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:35:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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 01:35:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:35:50,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:50,149 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:50,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 889550569, now seen corresponding path program 1 times [2021-11-07 01:35:50,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:50,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869160075] [2021-11-07 01:35:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:50,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:50,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:50,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:50,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:35:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:50,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:35:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:50,525 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 01:35:50,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:50,563 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 01:35:50,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:50,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869160075] [2021-11-07 01:35:50,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869160075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:50,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:50,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:35:50,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461489029] [2021-11-07 01:35:50,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:35:50,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:35:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:35:50,605 INFO L87 Difference]: Start difference. First operand has 221 states, 210 states have (on average 1.7285714285714286) internal successors, (363), 220 states have internal predecessors, (363), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:35:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:50,665 INFO L93 Difference]: Finished difference Result 440 states and 724 transitions. [2021-11-07 01:35:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:35:50,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 01:35:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:50,685 INFO L225 Difference]: With dead ends: 440 [2021-11-07 01:35:50,685 INFO L226 Difference]: Without dead ends: 217 [2021-11-07 01:35:50,690 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 01:35:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-07 01:35:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-07 01:35:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.3623188405797102) internal successors, (282), 216 states have internal predecessors, (282), 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 01:35:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 282 transitions. [2021-11-07 01:35:50,762 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 282 transitions. Word has length 8 [2021-11-07 01:35:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:50,763 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 282 transitions. [2021-11-07 01:35:50,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:35:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 282 transitions. [2021-11-07 01:35:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:35:50,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:50,765 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:50,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:50,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:50,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 921152950, now seen corresponding path program 1 times [2021-11-07 01:35:50,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:50,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240558157] [2021-11-07 01:35:50,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:50,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:50,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:51,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:35:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:51,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:35:51,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:51,329 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 01:35:51,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:51,390 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 01:35:51,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:51,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240558157] [2021-11-07 01:35:51,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240558157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:51,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:51,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:35:51,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351904629] [2021-11-07 01:35:51,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:35:51,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:35:51,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:35:51,405 INFO L87 Difference]: Start difference. First operand 217 states and 282 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 01:35:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:51,809 INFO L93 Difference]: Finished difference Result 433 states and 564 transitions. [2021-11-07 01:35:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 8 [2021-11-07 01:35:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:51,815 INFO L225 Difference]: With dead ends: 433 [2021-11-07 01:35:51,815 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:35:51,817 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 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 01:35:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:35:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:35:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 378 states have (on average 1.3412698412698412) internal successors, (507), 387 states have internal predecessors, (507), 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 01:35:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 507 transitions. [2021-11-07 01:35:51,865 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 507 transitions. Word has length 8 [2021-11-07 01:35:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:51,866 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 507 transitions. [2021-11-07 01:35:51,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 01:35:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 507 transitions. [2021-11-07 01:35:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:35:51,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:51,884 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:51,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:52,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,100 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:52,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1731820508, now seen corresponding path program 1 times [2021-11-07 01:35:52,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:52,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903821229] [2021-11-07 01:35:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:52,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:52,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:52,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:35:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:52,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:35:53,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:35:53,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-07 01:35:54,817 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:54,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903821229] [2021-11-07 01:35:54,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903821229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:54,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:54,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:35:54,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538119020] [2021-11-07 01:35:54,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:35:54,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:35:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:35:54,823 INFO L87 Difference]: Start difference. First operand 388 states and 507 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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 01:35:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:55,022 INFO L93 Difference]: Finished difference Result 776 states and 1020 transitions. [2021-11-07 01:35:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:55,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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 204 [2021-11-07 01:35:55,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:55,031 INFO L225 Difference]: With dead ends: 776 [2021-11-07 01:35:55,032 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 01:35:55,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:35:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 01:35:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2021-11-07 01:35:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 384 states have (on average 1.2942708333333333) internal successors, (497), 393 states have internal predecessors, (497), 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 01:35:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2021-11-07 01:35:55,101 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 204 [2021-11-07 01:35:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:55,102 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2021-11-07 01:35:55,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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 01:35:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2021-11-07 01:35:55,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:35:55,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:55,122 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:55,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:55,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:55,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash -810577396, now seen corresponding path program 1 times [2021-11-07 01:35:55,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:55,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495176717] [2021-11-07 01:35:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:55,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:55,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:55,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:55,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:35:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:35:56,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:35:56,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:35:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:35:57,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:35:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:35:58,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:35:58,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495176717] [2021-11-07 01:35:58,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495176717] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:35:58,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:35:58,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:35:58,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582048574] [2021-11-07 01:35:58,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:35:58,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:35:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:35:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:58,743 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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 01:35:58,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:35:58,873 INFO L93 Difference]: Finished difference Result 745 states and 947 transitions. [2021-11-07 01:35:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:35:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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 204 [2021-11-07 01:35:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:35:58,878 INFO L225 Difference]: With dead ends: 745 [2021-11-07 01:35:58,879 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 01:35:58,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:35:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 01:35:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-07 01:35:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 372 states have (on average 1.282258064516129) internal successors, (477), 381 states have internal predecessors, (477), 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 01:35:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 477 transitions. [2021-11-07 01:35:58,910 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 477 transitions. Word has length 204 [2021-11-07 01:35:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:35:58,911 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 477 transitions. [2021-11-07 01:35:58,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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 01:35:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 477 transitions. [2021-11-07 01:35:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-07 01:35:58,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:35:58,917 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:35:58,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:35:59,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:35:59,130 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:35:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:35:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2097413136, now seen corresponding path program 1 times [2021-11-07 01:35:59,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:35:59,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936030711] [2021-11-07 01:35:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:35:59,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:35:59,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:35:59,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:35:59,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:36:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:00,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:36:01,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:36:02,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:02,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936030711] [2021-11-07 01:36:02,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936030711] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:02,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:02,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:36:02,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236487634] [2021-11-07 01:36:02,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:36:02,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:36:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:36:02,690 INFO L87 Difference]: Start difference. First operand 382 states and 477 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 01:36:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:03,504 INFO L93 Difference]: Finished difference Result 715 states and 902 transitions. [2021-11-07 01:36:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 204 [2021-11-07 01:36:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:03,519 INFO L225 Difference]: With dead ends: 715 [2021-11-07 01:36:03,519 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 01:36:03,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:36:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 01:36:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-07 01:36:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 370 states have (on average 1.281081081081081) internal successors, (474), 379 states have internal predecessors, (474), 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 01:36:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 474 transitions. [2021-11-07 01:36:03,577 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 474 transitions. Word has length 204 [2021-11-07 01:36:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:03,578 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 474 transitions. [2021-11-07 01:36:03,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 01:36:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 474 transitions. [2021-11-07 01:36:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 01:36:03,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:03,585 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:03,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:03,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:03,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -117938176, now seen corresponding path program 1 times [2021-11-07 01:36:03,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:03,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107476070] [2021-11-07 01:36:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:03,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:03,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:03,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:03,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:36:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:05,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:05,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:36:05,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-07 01:36:06,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:06,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107476070] [2021-11-07 01:36:06,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107476070] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:06,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:36:06,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:36:06,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484918185] [2021-11-07 01:36:06,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:36:06,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:36:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:36:06,630 INFO L87 Difference]: Start difference. First operand 380 states and 474 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 01:36:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:06,846 INFO L93 Difference]: Finished difference Result 731 states and 930 transitions. [2021-11-07 01:36:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 211 [2021-11-07 01:36:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:06,852 INFO L225 Difference]: With dead ends: 731 [2021-11-07 01:36:06,852 INFO L226 Difference]: Without dead ends: 392 [2021-11-07 01:36:06,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 418 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 01:36:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-07 01:36:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-07 01:36:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 382 states have (on average 1.2722513089005236) internal successors, (486), 391 states have internal predecessors, (486), 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 01:36:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 486 transitions. [2021-11-07 01:36:06,878 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 486 transitions. Word has length 211 [2021-11-07 01:36:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:06,878 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 486 transitions. [2021-11-07 01:36:06,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 01:36:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 486 transitions. [2021-11-07 01:36:06,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:36:06,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:06,884 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:06,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:07,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:07,097 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1390117557, now seen corresponding path program 1 times [2021-11-07 01:36:07,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:07,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510281806] [2021-11-07 01:36:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:07,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:07,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:07,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:07,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:36:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:08,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:36:09,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:36:10,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:10,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510281806] [2021-11-07 01:36:10,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510281806] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:10,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1198480751] [2021-11-07 01:36:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:10,269 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:10,274 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 01:36:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:11,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:36:12,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:36:13,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1198480751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:13,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:13,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-07 01:36:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181020474] [2021-11-07 01:36:13,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:13,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:36:13,412 INFO L87 Difference]: Start difference. First operand 392 states and 486 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 01:36:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:13,692 INFO L93 Difference]: Finished difference Result 729 states and 920 transitions. [2021-11-07 01:36:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:13,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 214 [2021-11-07 01:36:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:13,699 INFO L225 Difference]: With dead ends: 729 [2021-11-07 01:36:13,700 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 01:36:13,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:36:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 01:36:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2021-11-07 01:36:13,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 431 states have internal predecessors, (526), 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 01:36:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 526 transitions. [2021-11-07 01:36:13,738 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 526 transitions. Word has length 214 [2021-11-07 01:36:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:13,740 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 526 transitions. [2021-11-07 01:36:13,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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 01:36:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 526 transitions. [2021-11-07 01:36:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-07 01:36:13,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:13,747 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:13,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:13,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:14,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:36:14,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1491793581, now seen corresponding path program 1 times [2021-11-07 01:36:14,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:14,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932792722] [2021-11-07 01:36:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:14,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:14,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:14,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:14,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:36:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:15,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:15,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:36:16,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 01:36:17,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:17,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932792722] [2021-11-07 01:36:17,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932792722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:17,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1637309268] [2021-11-07 01:36:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:17,471 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:17,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:17,472 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:17,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:36:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:19,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:36:19,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:36:21,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-07 01:36:24,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1637309268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:24,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:24,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 01:36:24,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954541319] [2021-11-07 01:36:24,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:36:24,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:36:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:24,172 INFO L87 Difference]: Start difference. First operand 432 states and 526 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 01:36:24,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:24,661 INFO L93 Difference]: Finished difference Result 708 states and 867 transitions. [2021-11-07 01:36:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:36:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 214 [2021-11-07 01:36:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:24,666 INFO L225 Difference]: With dead ends: 708 [2021-11-07 01:36:24,667 INFO L226 Difference]: Without dead ends: 430 [2021-11-07 01:36:24,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 845 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:36:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-07 01:36:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2021-11-07 01:36:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 420 states have (on average 1.2452380952380953) internal successors, (523), 429 states have internal predecessors, (523), 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 01:36:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 523 transitions. [2021-11-07 01:36:24,695 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 523 transitions. Word has length 214 [2021-11-07 01:36:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:24,698 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 523 transitions. [2021-11-07 01:36:24,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 01:36:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 523 transitions. [2021-11-07 01:36:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:36:24,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:24,703 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:24,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:24,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:25,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:25,122 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash -747559960, now seen corresponding path program 1 times [2021-11-07 01:36:25,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:25,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240201804] [2021-11-07 01:36:25,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:25,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:25,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:25,127 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:25,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:36:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:27,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:27,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:28,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:28,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240201804] [2021-11-07 01:36:28,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240201804] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:28,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1683786589] [2021-11-07 01:36:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:28,634 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:28,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:28,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:28,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:36:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:31,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:31,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:31,895 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:36:31,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-07 01:36:32,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1683786589] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:36:32,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:36:32,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-07 01:36:32,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807699635] [2021-11-07 01:36:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:36:32,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:36:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:36:32,629 INFO L87 Difference]: Start difference. First operand 430 states and 523 transitions. Second operand has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 01:36:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:32,813 INFO L93 Difference]: Finished difference Result 739 states and 911 transitions. [2021-11-07 01:36:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:36:32,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 224 [2021-11-07 01:36:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:32,821 INFO L225 Difference]: With dead ends: 739 [2021-11-07 01:36:32,822 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 01:36:32,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:36:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 01:36:32,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 396. [2021-11-07 01:36:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 386 states have (on average 1.2098445595854923) internal successors, (467), 395 states have internal predecessors, (467), 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 01:36:32,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 467 transitions. [2021-11-07 01:36:32,847 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 467 transitions. Word has length 224 [2021-11-07 01:36:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:32,848 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 467 transitions. [2021-11-07 01:36:32,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.2) internal successors, (186), 5 states have internal predecessors, (186), 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 01:36:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 467 transitions. [2021-11-07 01:36:32,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 01:36:32,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:32,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:36:32,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:33,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 01:36:33,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:33,281 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:33,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 948450308, now seen corresponding path program 1 times [2021-11-07 01:36:33,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:33,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434519233] [2021-11-07 01:36:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:33,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:33,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:33,287 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:33,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:36:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:35,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:35,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:36,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:37,632 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:37,633 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:36:37,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434519233] [2021-11-07 01:36:37,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434519233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:37,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [315150783] [2021-11-07 01:36:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:37,634 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:37,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:36:37,635 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:36:37,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:36:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:40,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:36:40,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:41,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-07 01:36:42,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [315150783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:42,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673037710] [2021-11-07 01:36:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:36:42,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:36:42,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:36:42,291 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:36:42,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:36:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:36:44,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:36:44,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:36:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:46,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:36:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 01:36:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673037710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:36:47,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:36:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 14 [2021-11-07 01:36:47,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530846873] [2021-11-07 01:36:47,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:36:47,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:36:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:36:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:36:47,530 INFO L87 Difference]: Start difference. First operand 396 states and 467 transitions. Second operand has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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 01:36:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:36:54,688 INFO L93 Difference]: Finished difference Result 1525 states and 1866 transitions. [2021-11-07 01:36:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:36:54,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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 224 [2021-11-07 01:36:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:36:54,702 INFO L225 Difference]: With dead ends: 1525 [2021-11-07 01:36:54,702 INFO L226 Difference]: Without dead ends: 1172 [2021-11-07 01:36:54,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=689, Invalid=1963, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 01:36:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-07 01:36:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-07 01:36:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1162 states have (on average 1.1764199655765921) internal successors, (1367), 1171 states have internal predecessors, (1367), 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 01:36:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1367 transitions. [2021-11-07 01:36:54,771 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1367 transitions. Word has length 224 [2021-11-07 01:36:54,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:36:54,772 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1367 transitions. [2021-11-07 01:36:54,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.0) internal successors, (602), 14 states have internal predecessors, (602), 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 01:36:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1367 transitions. [2021-11-07 01:36:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-11-07 01:36:54,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:36:54,794 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 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 01:36:54,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:55,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:55,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:36:55,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:36:55,421 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:36:55,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:36:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash 330999072, now seen corresponding path program 2 times [2021-11-07 01:36:55,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:36:55,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435882811] [2021-11-07 01:36:55,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:36:55,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:36:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:36:55,431 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:36:55,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:36:58,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:36:58,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:36:59,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:36:59,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:37:01,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:37:03,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:37:03,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435882811] [2021-11-07 01:37:03,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435882811] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:03,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1956689406] [2021-11-07 01:37:03,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:03,659 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:37:03,673 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:37:03,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:37:08,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:08,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:08,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:37:08,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:37:10,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 21 refuted. 0 times theorem prover too weak. 1308 trivial. 0 not checked. [2021-11-07 01:37:12,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1956689406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:12,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690418751] [2021-11-07 01:37:12,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:37:12,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:37:12,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:37:12,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:37:12,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:37:17,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:37:17,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:37:17,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:37:17,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:37:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:37:19,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:37:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 181 proven. 6 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-11-07 01:37:21,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690418751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:37:21,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:37:21,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 6, 6] total 23 [2021-11-07 01:37:21,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324071197] [2021-11-07 01:37:21,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:37:21,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:37:21,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:37:21,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:37:21,571 INFO L87 Difference]: Start difference. First operand 1172 states and 1367 transitions. Second operand has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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 01:37:30,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:37:30,081 INFO L93 Difference]: Finished difference Result 3445 states and 4227 transitions. [2021-11-07 01:37:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:37:30,085 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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 628 [2021-11-07 01:37:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:37:30,101 INFO L225 Difference]: With dead ends: 3445 [2021-11-07 01:37:30,101 INFO L226 Difference]: Without dead ends: 2320 [2021-11-07 01:37:30,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3776 GetRequests, 3748 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:37:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-11-07 01:37:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1412. [2021-11-07 01:37:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1402 states have (on average 1.1547788873038516) internal successors, (1619), 1411 states have internal predecessors, (1619), 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 01:37:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1619 transitions. [2021-11-07 01:37:30,241 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1619 transitions. Word has length 628 [2021-11-07 01:37:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:37:30,241 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 1619 transitions. [2021-11-07 01:37:30,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.347826086956522) internal successors, (192), 23 states have internal predecessors, (192), 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 01:37:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1619 transitions. [2021-11-07 01:37:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2021-11-07 01:37:30,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:37:30,252 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 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 01:37:30,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:30,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:37:30,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-11-07 01:37:30,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:37:30,869 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:37:30,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:37:30,870 INFO L85 PathProgramCache]: Analyzing trace with hash -815531232, now seen corresponding path program 3 times [2021-11-07 01:37:30,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:37:30,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536128813] [2021-11-07 01:37:30,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:37:30,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:37:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:37:30,877 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:37:30,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dfaace0-f615-487b-b71d-8143dd879738/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process