./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:19,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:19,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:19,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:19,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:19,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:19,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:19,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:19,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:19,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:19,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:19,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:19,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:19,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:19,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:19,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:19,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:19,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:19,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:19,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:19,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:19,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:19,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:19,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:19,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:19,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:19,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:19,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:19,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:19,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:19,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:19,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:19,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:19,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:19,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:19,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:19,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:19,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:19,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:19,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:19,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:19,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:21:19,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:19,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:19,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:19,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:19,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:19,635 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:19,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:21:19,635 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:19,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:19,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:21:19,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:21:19,643 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:19,643 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:21:19,643 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:21:19,643 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:21:19,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:19,644 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:19,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:21:19,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:19,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:19,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:19,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:19,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:19,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:19,646 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:19,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:19,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:19,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:19,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:19,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:19,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:19,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:19,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:19,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:19,650 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:21:19,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:21:19,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:19,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:19,651 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:19,651 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-07 02:21:19,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:19,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:19,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:19,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:19,980 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:19,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 02:21:20,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/adf9d1577/40113d3c401a40e89ff091fe398599f9/FLAGe7ac9aa7d [2021-11-07 02:21:20,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:20,608 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 02:21:20,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/adf9d1577/40113d3c401a40e89ff091fe398599f9/FLAGe7ac9aa7d [2021-11-07 02:21:20,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/adf9d1577/40113d3c401a40e89ff091fe398599f9 [2021-11-07 02:21:20,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:20,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:20,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:20,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:20,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:20,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:20" (1/1) ... [2021-11-07 02:21:20,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fae6bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:20, skipping insertion in model container [2021-11-07 02:21:20,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:20" (1/1) ... [2021-11-07 02:21:20,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:20,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:21,381 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 02:21:21,496 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 02:21:21,503 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 02:21:21,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:21,543 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 02:21:21,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@517a547b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:21, skipping insertion in model container [2021-11-07 02:21:21,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:21,559 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:21:21,561 INFO L168 Benchmark]: Toolchain (without parser) took 700.70 ms. Allocated memory is still 104.9 MB. Free memory was 68.4 MB in the beginning and 70.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:21,563 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory is still 86.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:21:21,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.28 ms. Allocated memory is still 104.9 MB. Free memory was 68.1 MB in the beginning and 70.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:21,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory is still 86.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 692.28 ms. Allocated memory is still 104.9 MB. Free memory was 68.1 MB in the beginning and 70.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:23,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:23,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:24,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:24,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:24,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:24,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:24,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:24,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:24,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:24,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:24,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:24,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:24,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:24,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:24,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:24,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:24,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:24,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:24,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:24,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:24,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:24,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:24,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:24,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:24,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:24,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:24,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:24,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:24,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:24,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:24,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:24,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:24,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:24,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:24,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:24,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:24,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:24,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:24,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:24,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:24,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:21:24,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:24,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:24,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:24,137 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:24,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:24,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:24,138 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:24,138 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:24,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:24,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:24,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:24,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:24,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:24,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:24,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:24,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:24,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:21:24,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:21:24,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:24,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:24,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:24,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:24,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:24,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:21:24,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:24,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:24,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:24,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:24,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:24,146 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:21:24,146 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:24,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:24,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:24,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:24,147 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dff9798a0295b679f16f480562390718a9087ab219890b5f7fb9fb3739a540b [2021-11-07 02:21:24,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:24,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:24,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:24,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:24,594 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:24,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 02:21:24,668 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/146e48958/338ef04620f74934a3112e48733b1439/FLAG0a779604b [2021-11-07 02:21:25,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:25,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i [2021-11-07 02:21:25,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/146e48958/338ef04620f74934a3112e48733b1439/FLAG0a779604b [2021-11-07 02:21:25,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/data/146e48958/338ef04620f74934a3112e48733b1439 [2021-11-07 02:21:25,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:25,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:25,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:25,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:25,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:25,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:25" (1/1) ... [2021-11-07 02:21:25,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142b361e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:25, skipping insertion in model container [2021-11-07 02:21:25,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:25" (1/1) ... [2021-11-07 02:21:25,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:25,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:26,149 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 02:21:26,351 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 02:21:26,353 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 02:21:26,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:26,403 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:21:26,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:26,458 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 02:21:26,555 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 02:21:26,556 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 02:21:26,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:26,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:21:26,599 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[33021,33034] [2021-11-07 02:21:26,683 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44124,44137] [2021-11-07 02:21:26,684 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_f7a7eba5-e291-44c9-8836-e1ef7599b72c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-2.i[44245,44258] [2021-11-07 02:21:26,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:26,738 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:21:26,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26 WrapperNode [2021-11-07 02:21:26,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:26,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:26,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:21:26,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:21:26,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:26,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:21:26,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:21:26,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:21:26,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:27,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:27,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:27,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:27,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:21:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:21:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:21:27,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:21:27,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:27,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:27,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:27,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:21:27,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:21:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:21:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:21:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:21:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:21:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:21:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 02:21:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:21:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:21:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:21:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:21:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:21:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:21:34,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:21:34,014 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-07 02:21:34,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:34 BoogieIcfgContainer [2021-11-07 02:21:34,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:21:34,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:21:34,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:21:34,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:21:34,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:25" (1/3) ... [2021-11-07 02:21:34,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9b1ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:34, skipping insertion in model container [2021-11-07 02:21:34,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26" (2/3) ... [2021-11-07 02:21:34,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9b1ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:34, skipping insertion in model container [2021-11-07 02:21:34,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:34" (3/3) ... [2021-11-07 02:21:34,026 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-2.i [2021-11-07 02:21:34,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:21:34,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 02:21:34,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:21:34,096 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 02:21:34,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 02:21:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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 02:21:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:21:34,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:34,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:34,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-07 02:21:34,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:34,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163865449] [2021-11-07 02:21:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:34,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:34,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:34,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:21:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:34,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:21:34,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:34,493 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 02:21:34,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:34,528 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 02:21:34,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:34,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163865449] [2021-11-07 02:21:34,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163865449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:34,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:34,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:21:34,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848984825] [2021-11-07 02:21:34,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:21:34,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:34,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:21:34,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:21:34,566 INFO L87 Difference]: Start difference. First operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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 02:21:34,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:34,638 INFO L93 Difference]: Finished difference Result 419 states and 707 transitions. [2021-11-07 02:21:34,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:21:34,640 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 02:21:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:34,660 INFO L225 Difference]: With dead ends: 419 [2021-11-07 02:21:34,660 INFO L226 Difference]: Without dead ends: 177 [2021-11-07 02:21:34,666 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 02:21:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-07 02:21:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-07 02:21:34,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 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 02:21:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-07 02:21:34,736 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-07 02:21:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:34,737 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-07 02:21:34,737 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 02:21:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-07 02:21:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:21:34,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:34,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:34,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:34,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-07 02:21:34,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:34,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414181404] [2021-11-07 02:21:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:34,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:34,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:34,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:21:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:21:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:35,315 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 02:21:35,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:35,409 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 02:21:35,410 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:35,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414181404] [2021-11-07 02:21:35,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414181404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:35,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:35,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:21:35,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109337864] [2021-11-07 02:21:35,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:35,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:35,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:35,419 INFO L87 Difference]: Start difference. First operand 177 states and 232 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 02:21:39,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:39,056 INFO L93 Difference]: Finished difference Result 460 states and 606 transitions. [2021-11-07 02:21:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:39,059 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 10 [2021-11-07 02:21:39,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:39,062 INFO L225 Difference]: With dead ends: 460 [2021-11-07 02:21:39,062 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 02:21:39,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 02:21:39,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2021-11-07 02:21:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 278 states have (on average 1.3273381294964028) internal successors, (369), 279 states have internal predecessors, (369), 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 02:21:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 369 transitions. [2021-11-07 02:21:39,085 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 369 transitions. Word has length 10 [2021-11-07 02:21:39,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:39,085 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 369 transitions. [2021-11-07 02:21:39,086 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 02:21:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 369 transitions. [2021-11-07 02:21:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:21:39,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:39,088 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:39,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:39,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:39,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:39,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash 627335073, now seen corresponding path program 1 times [2021-11-07 02:21:39,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:39,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1073188427] [2021-11-07 02:21:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:39,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:39,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:39,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:39,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:21:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:39,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:39,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:39,684 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 02:21:39,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:39,847 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 02:21:39,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:39,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1073188427] [2021-11-07 02:21:39,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1073188427] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:39,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:39,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:21:39,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199313272] [2021-11-07 02:21:39,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:39,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:39,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:39,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:39,850 INFO L87 Difference]: Start difference. First operand 280 states and 369 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:40,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:40,020 INFO L93 Difference]: Finished difference Result 450 states and 593 transitions. [2021-11-07 02:21:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:40,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:21:40,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:40,023 INFO L225 Difference]: With dead ends: 450 [2021-11-07 02:21:40,023 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 02:21:40,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 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 02:21:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 02:21:40,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 286. [2021-11-07 02:21:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 1.2640845070422535) internal successors, (359), 285 states have internal predecessors, (359), 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 02:21:40,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 359 transitions. [2021-11-07 02:21:40,058 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 359 transitions. Word has length 44 [2021-11-07 02:21:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:40,059 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 359 transitions. [2021-11-07 02:21:40,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 359 transitions. [2021-11-07 02:21:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:21:40,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:40,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:40,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:40,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:40,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash -317553387, now seen corresponding path program 1 times [2021-11-07 02:21:40,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:40,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269533607] [2021-11-07 02:21:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:40,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:40,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:40,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:21:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:40,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:21:40,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:40,757 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 02:21:40,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:41,413 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 02:21:41,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:41,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269533607] [2021-11-07 02:21:41,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269533607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:41,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:41,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 02:21:41,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051336636] [2021-11-07 02:21:41,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:21:41,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:41,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:21:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:41,417 INFO L87 Difference]: Start difference. First operand 286 states and 359 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 02:21:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:41,584 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2021-11-07 02:21:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 44 [2021-11-07 02:21:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:41,587 INFO L225 Difference]: With dead ends: 442 [2021-11-07 02:21:41,588 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 02:21:41,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:21:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 02:21:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 274. [2021-11-07 02:21:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 1.2463235294117647) internal successors, (339), 273 states have internal predecessors, (339), 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 02:21:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 339 transitions. [2021-11-07 02:21:41,604 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 339 transitions. Word has length 44 [2021-11-07 02:21:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:41,605 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 339 transitions. [2021-11-07 02:21:41,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 02:21:41,606 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 339 transitions. [2021-11-07 02:21:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 02:21:41,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:41,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:41,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-07 02:21:41,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:41,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -575718825, now seen corresponding path program 1 times [2021-11-07 02:21:41,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:41,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561917807] [2021-11-07 02:21:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:41,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:41,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:41,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:21:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:42,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:42,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:42,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:42,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:42,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:42,285 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:21:42,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 02:21:42,371 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:21:42,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 02:21:42,499 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 02:21:42,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:42,705 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 02:21:42,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:42,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561917807] [2021-11-07 02:21:42,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561917807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:42,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:42,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:21:42,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969958751] [2021-11-07 02:21:42,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:21:42,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:42,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:21:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:21:42,728 INFO L87 Difference]: Start difference. First operand 274 states and 339 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:53,578 INFO L93 Difference]: Finished difference Result 557 states and 668 transitions. [2021-11-07 02:21:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:21:53,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 02:21:53,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:53,582 INFO L225 Difference]: With dead ends: 557 [2021-11-07 02:21:53,582 INFO L226 Difference]: Without dead ends: 414 [2021-11-07 02:21:53,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:21:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-07 02:21:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 273. [2021-11-07 02:21:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.2435424354243543) internal successors, (337), 272 states have internal predecessors, (337), 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 02:21:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 337 transitions. [2021-11-07 02:21:53,596 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 337 transitions. Word has length 44 [2021-11-07 02:21:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:53,597 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 337 transitions. [2021-11-07 02:21:53,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 337 transitions. [2021-11-07 02:21:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 02:21:53,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:53,601 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:53,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:53,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:53,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:53,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 858593360, now seen corresponding path program 1 times [2021-11-07 02:21:53,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:53,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542863112] [2021-11-07 02:21:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:53,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:53,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:53,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:21:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:54,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:54,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:54,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:54,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:54,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542863112] [2021-11-07 02:21:54,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542863112] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:54,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:54,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:21:54,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781827267] [2021-11-07 02:21:54,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:21:54,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:21:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:21:54,747 INFO L87 Difference]: Start difference. First operand 273 states and 337 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 02:21:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:54,901 INFO L93 Difference]: Finished difference Result 545 states and 679 transitions. [2021-11-07 02:21:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 69 [2021-11-07 02:21:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:54,904 INFO L225 Difference]: With dead ends: 545 [2021-11-07 02:21:54,904 INFO L226 Difference]: Without dead ends: 281 [2021-11-07 02:21:54,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 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 02:21:54,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-07 02:21:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2021-11-07 02:21:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.1805054151624548) internal successors, (327), 278 states have internal predecessors, (327), 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 02:21:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 327 transitions. [2021-11-07 02:21:54,934 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 327 transitions. Word has length 69 [2021-11-07 02:21:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:54,936 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 327 transitions. [2021-11-07 02:21:54,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 02:21:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 327 transitions. [2021-11-07 02:21:54,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 02:21:54,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:54,939 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:54,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:55,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:55,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-07 02:21:55,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:55,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264817433] [2021-11-07 02:21:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:55,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:55,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:55,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:55,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:21:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:55,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:55,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:55,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:56,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:56,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264817433] [2021-11-07 02:21:56,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264817433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:56,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:56,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:56,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284993987] [2021-11-07 02:21:56,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:56,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:56,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:56,046 INFO L87 Difference]: Start difference. First operand 279 states and 327 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:21:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:56,138 INFO L93 Difference]: Finished difference Result 516 states and 611 transitions. [2021-11-07 02:21:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:56,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 69 [2021-11-07 02:21:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:56,142 INFO L225 Difference]: With dead ends: 516 [2021-11-07 02:21:56,142 INFO L226 Difference]: Without dead ends: 282 [2021-11-07 02:21:56,144 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 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 02:21:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-07 02:21:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-07 02:21:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 1.1785714285714286) internal successors, (330), 281 states have internal predecessors, (330), 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 02:21:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 330 transitions. [2021-11-07 02:21:56,175 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 330 transitions. Word has length 69 [2021-11-07 02:21:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:56,175 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 330 transitions. [2021-11-07 02:21:56,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 02:21:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 330 transitions. [2021-11-07 02:21:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 02:21:56,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:56,177 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:56,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:56,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:56,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:56,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash 982130832, now seen corresponding path program 1 times [2021-11-07 02:21:56,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:56,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763994206] [2021-11-07 02:21:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:56,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:56,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:56,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:56,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:21:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:56,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:21:56,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:57,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:57,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:57,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763994206] [2021-11-07 02:21:57,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763994206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:57,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080665736] [2021-11-07 02:21:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:57,407 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:57,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:21:57,415 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:21:57,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 02:21:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:58,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:21:58,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:58,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:21:58,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080665736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:21:58,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499198268] [2021-11-07 02:21:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:58,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:21:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:58,439 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:21:58,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 02:21:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:58,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:21:58,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:59,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:59,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:59,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:21:59,211 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 02:21:59,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-07 02:21:59,307 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 02:21:59,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-07 02:21:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:21:59,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:59,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 02:21:59,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499198268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:59,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:21:59,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 02:21:59,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520808358] [2021-11-07 02:21:59,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:21:59,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:59,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:21:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:21:59,580 INFO L87 Difference]: Start difference. First operand 282 states and 330 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 02:22:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:12,225 INFO L93 Difference]: Finished difference Result 423 states and 493 transitions. [2021-11-07 02:22:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:22:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 72 [2021-11-07 02:22:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:12,230 INFO L225 Difference]: With dead ends: 423 [2021-11-07 02:22:12,230 INFO L226 Difference]: Without dead ends: 419 [2021-11-07 02:22:12,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:22:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-07 02:22:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 284. [2021-11-07 02:22:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 1.177304964539007) internal successors, (332), 283 states have internal predecessors, (332), 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 02:22:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 332 transitions. [2021-11-07 02:22:12,246 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 332 transitions. Word has length 72 [2021-11-07 02:22:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:12,247 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 332 transitions. [2021-11-07 02:22:12,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 02:22:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 332 transitions. [2021-11-07 02:22:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 02:22:12,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:12,249 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:12,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:12,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-07 02:22:12,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-07 02:22:12,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:12,869 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:12,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash -786181332, now seen corresponding path program 1 times [2021-11-07 02:22:12,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:12,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381816990] [2021-11-07 02:22:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:12,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:12,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:12,873 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:12,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:22:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:13,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:14,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:14,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381816990] [2021-11-07 02:22:14,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381816990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:14,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1119845893] [2021-11-07 02:22:14,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:14,146 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:14,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:14,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:14,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 02:22:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:14,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:22:14,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:22:15,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:22:15,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1119845893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:15,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:22:15,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 02:22:15,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333131526] [2021-11-07 02:22:15,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:15,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:15,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:22:15,870 INFO L87 Difference]: Start difference. First operand 284 states and 332 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 02:22:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:20,416 INFO L93 Difference]: Finished difference Result 605 states and 712 transitions. [2021-11-07 02:22:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:22:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 106 [2021-11-07 02:22:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:20,421 INFO L225 Difference]: With dead ends: 605 [2021-11-07 02:22:20,421 INFO L226 Difference]: Without dead ends: 366 [2021-11-07 02:22:20,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:22:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-07 02:22:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 359. [2021-11-07 02:22:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 357 states have (on average 1.1820728291316527) internal successors, (422), 358 states have internal predecessors, (422), 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 02:22:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 422 transitions. [2021-11-07 02:22:20,442 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 422 transitions. Word has length 106 [2021-11-07 02:22:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:20,444 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 422 transitions. [2021-11-07 02:22:20,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 02:22:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 422 transitions. [2021-11-07 02:22:20,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 02:22:20,452 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:20,453 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:22:20,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:20,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:20,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:20,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:20,867 INFO L85 PathProgramCache]: Analyzing trace with hash 530496366, now seen corresponding path program 1 times [2021-11-07 02:22:20,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:20,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123213607] [2021-11-07 02:22:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:20,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:20,870 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:20,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:22:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:21,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:21,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:22,389 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:22,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123213607] [2021-11-07 02:22:22,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123213607] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:22,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [258195285] [2021-11-07 02:22:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:22,396 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:22,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:22,397 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:22,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:22:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:23,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:22:23,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [258195285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:23,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621414259] [2021-11-07 02:22:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:23,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:23,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:23,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:22:23,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 02:22:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:24,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:24,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:22:25,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 02:22:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621414259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:25,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:22:25,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 02:22:25,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346541201] [2021-11-07 02:22:25,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:22:25,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:22:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:22:25,371 INFO L87 Difference]: Start difference. First operand 359 states and 422 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 02:22:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:25,691 INFO L93 Difference]: Finished difference Result 676 states and 805 transitions. [2021-11-07 02:22:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:22:25,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 113 [2021-11-07 02:22:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:25,696 INFO L225 Difference]: With dead ends: 676 [2021-11-07 02:22:25,696 INFO L226 Difference]: Without dead ends: 367 [2021-11-07 02:22:25,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:22:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-07 02:22:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2021-11-07 02:22:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 365 states have (on average 1.178082191780822) internal successors, (430), 366 states have internal predecessors, (430), 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 02:22:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 430 transitions. [2021-11-07 02:22:25,717 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 430 transitions. Word has length 113 [2021-11-07 02:22:25,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:25,718 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 430 transitions. [2021-11-07 02:22:25,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 02:22:25,718 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 430 transitions. [2021-11-07 02:22:25,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 02:22:25,720 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:25,720 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:25,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:25,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:26,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:26,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:26,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1097324242, now seen corresponding path program 2 times [2021-11-07 02:22:26,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:26,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720390778] [2021-11-07 02:22:26,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:22:26,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:26,330 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:26,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:22:27,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:22:27,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:27,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:22:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:28,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:28,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:28,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720390778] [2021-11-07 02:22:28,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720390778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:28,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [305481475] [2021-11-07 02:22:28,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:22:28,831 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:28,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:28,833 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:28,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 02:22:30,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:22:30,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:30,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:22:30,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:30,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:22:31,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [305481475] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:31,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399095803] [2021-11-07 02:22:31,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:22:31,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:31,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:22:31,302 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:22:31,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 02:22:32,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 02:22:32,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:32,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:22:32,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:22:32,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 02:22:33,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399095803] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:33,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:22:33,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 02:22:33,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434107226] [2021-11-07 02:22:33,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 02:22:33,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 02:22:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 02:22:33,935 INFO L87 Difference]: Start difference. First operand 367 states and 430 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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 02:22:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:38,517 INFO L93 Difference]: Finished difference Result 1003 states and 1202 transitions. [2021-11-07 02:22:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:22:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 02:22:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:38,525 INFO L225 Difference]: With dead ends: 1003 [2021-11-07 02:22:38,525 INFO L226 Difference]: Without dead ends: 690 [2021-11-07 02:22:38,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 02:22:38,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-07 02:22:38,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 389. [2021-11-07 02:22:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.1705426356589148) internal successors, (453), 388 states have internal predecessors, (453), 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 02:22:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 453 transitions. [2021-11-07 02:22:38,556 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 453 transitions. Word has length 121 [2021-11-07 02:22:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:38,557 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 453 transitions. [2021-11-07 02:22:38,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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 02:22:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 453 transitions. [2021-11-07 02:22:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 02:22:38,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:38,559 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:38,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:38,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-07 02:22:38,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:39,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:22:39,167 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1558698834, now seen corresponding path program 3 times [2021-11-07 02:22:39,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:39,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130216967] [2021-11-07 02:22:39,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:22:39,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:39,170 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:39,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 02:22:47,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 02:22:47,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:22:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:22:47,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:22:48,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:22:50,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:50,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130216967] [2021-11-07 02:22:50,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130216967] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:22:50,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [158450626] [2021-11-07 02:22:50,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:22:50,364 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:22:50,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:22:50,366 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:22:50,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 02:23:39,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 02:23:39,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:23:39,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:23:39,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:23:39,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-07 02:23:40,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [158450626] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:23:40,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604739638] [2021-11-07 02:23:40,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:23:40,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:23:40,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:23:40,373 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:23:40,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a7eba5-e291-44c9-8836-e1ef7599b72c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process