./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:13:24,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:13:24,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:13:24,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:13:24,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:13:24,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:13:24,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:13:24,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:13:24,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:13:24,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:13:24,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:13:24,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:13:24,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:13:24,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:13:24,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:13:24,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:13:24,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:13:24,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:13:24,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:13:24,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:13:24,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:13:24,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:13:24,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:13:24,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:13:24,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:13:24,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:13:24,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:13:24,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:13:24,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:13:24,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:13:24,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:13:24,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:13:24,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:13:24,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:13:24,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:13:24,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:13:24,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:13:24,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:13:24,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:13:24,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:13:24,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:13:24,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:13:24,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:13:24,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:13:24,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:13:24,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:13:24,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:13:24,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:13:24,786 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:13:24,786 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:13:24,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:13:24,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:13:24,795 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:13:24,795 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:13:24,795 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:13:24,796 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:13:24,796 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:13:24,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:13:24,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:13:24,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:13:24,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:13:24,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:13:24,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:13:24,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:13:24,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:13:24,799 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:13:24,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:13:24,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:13:24,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:13:24,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:13:24,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:13:24,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:13:24,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:24,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:13:24,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:13:24,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:13:24,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:13:24,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:13:24,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:13:24,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:13:24,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:13:24,805 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-07 01:13:25,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:13:25,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:13:25,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:13:25,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:13:25,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:13:25,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-07 01:13:25,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/4bd24e4fc/a7f15b0564984d55bdeba64bfec6fe8a/FLAGfff3afb3d [2021-11-07 01:13:26,083 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:13:26,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-07 01:13:26,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/4bd24e4fc/a7f15b0564984d55bdeba64bfec6fe8a/FLAGfff3afb3d [2021-11-07 01:13:26,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/4bd24e4fc/a7f15b0564984d55bdeba64bfec6fe8a [2021-11-07 01:13:26,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:13:26,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:13:26,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:26,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:13:26,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:13:26,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:26" (1/1) ... [2021-11-07 01:13:26,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225e1e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:26, skipping insertion in model container [2021-11-07 01:13:26,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:26" (1/1) ... [2021-11-07 01:13:26,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:13:26,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:26,837 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-07 01:13:26,986 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-07 01:13:27,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:27,028 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:13:27,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3abc63b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:27, skipping insertion in model container [2021-11-07 01:13:27,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:27,030 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:13:27,033 INFO L168 Benchmark]: Toolchain (without parser) took 816.61 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 47.2 MB in the beginning and 69.1 MB in the end (delta: -21.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:27,034 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 53.6 MB in the beginning and 53.5 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:13:27,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 813.25 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 69.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:13:27,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory was 53.6 MB in the beginning and 53.5 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 813.25 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 46.9 MB in the beginning and 69.1 MB in the end (delta: -22.1 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: 736]: 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:13:29,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:13:29,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:13:29,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:13:29,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:13:29,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:13:29,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:13:29,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:13:29,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:13:29,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:13:29,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:13:29,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:13:29,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:13:29,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:13:29,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:13:29,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:13:29,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:13:29,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:13:29,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:13:29,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:13:29,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:13:29,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:13:29,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:13:29,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:13:29,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:13:29,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:13:29,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:13:29,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:13:29,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:13:29,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:13:29,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:13:29,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:13:29,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:13:29,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:13:29,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:13:29,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:13:29,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:13:29,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:13:29,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:13:29,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:13:29,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:13:29,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:13:29,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:13:29,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:13:29,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:13:29,832 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:13:29,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:13:29,832 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:13:29,833 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:13:29,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:13:29,834 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:13:29,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:13:29,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:13:29,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:13:29,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:13:29,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:13:29,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:13:29,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:13:29,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:13:29,838 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:13:29,838 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:13:29,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:13:29,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:13:29,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:13:29,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:13:29,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:13:29,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:13:29,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:13:29,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:29,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:13:29,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:13:29,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:13:29,841 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:13:29,841 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:13:29,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:13:29,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:13:29,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:13:29,842 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a3b80a468e10df778a3b8ff41e4c2b1e0b82c1005f056b209a19315511b1a5 [2021-11-07 01:13:30,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:13:30,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:13:30,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:13:30,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:13:30,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:13:30,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-07 01:13:30,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/8e3e2b80d/148a6f43a0e8434daa66b67cd707958c/FLAGe8e10204a [2021-11-07 01:13:31,295 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:13:31,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i [2021-11-07 01:13:31,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/8e3e2b80d/148a6f43a0e8434daa66b67cd707958c/FLAGe8e10204a [2021-11-07 01:13:31,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/data/8e3e2b80d/148a6f43a0e8434daa66b67cd707958c [2021-11-07 01:13:31,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:13:31,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:13:31,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:31,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:13:31,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:13:31,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:31" (1/1) ... [2021-11-07 01:13:31,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:31, skipping insertion in model container [2021-11-07 01:13:31,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:13:31" (1/1) ... [2021-11-07 01:13:31,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:13:31,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:32,074 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-07 01:13:32,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-07 01:13:32,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:32,360 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:13:32,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:13:32,435 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-07 01:13:32,549 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-07 01:13:32,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:32,585 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:13:32,636 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[33021,33034] [2021-11-07 01:13:32,729 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_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-2.i[44590,44603] [2021-11-07 01:13:32,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:13:32,805 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:13:32,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32 WrapperNode [2021-11-07 01:13:32,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:13:32,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:32,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:13:32,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:13:32,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:32,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:13:33,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:13:33,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:13:33,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:13:33,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:13:33,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:13:33,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:13:33,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:13:33,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (1/1) ... [2021-11-07 01:13:33,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:13:33,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:13:33,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:13:33,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:13:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:13:33,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:13:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:13:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:13:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:13:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 01:13:33,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:13:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:13:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:13:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:13:33,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:13:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:13:41,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:13:41,026 INFO L299 CfgBuilder]: Removed 94 assume(true) statements. [2021-11-07 01:13:41,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:41 BoogieIcfgContainer [2021-11-07 01:13:41,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:13:41,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:13:41,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:13:41,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:13:41,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:13:31" (1/3) ... [2021-11-07 01:13:41,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b7af65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:41, skipping insertion in model container [2021-11-07 01:13:41,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:13:32" (2/3) ... [2021-11-07 01:13:41,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b7af65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:13:41, skipping insertion in model container [2021-11-07 01:13:41,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:13:41" (3/3) ... [2021-11-07 01:13:41,040 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-2.i [2021-11-07 01:13:41,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:13:41,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:13:41,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:13:41,163 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:13:41,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:13:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 231 states, 224 states have (on average 1.71875) internal successors, (385), 230 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:13:41,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:41,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:41,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 01:13:41,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750733650] [2021-11-07 01:13:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:41,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:41,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:41,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:13:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:41,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:13:41,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:41,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:41,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:41,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750733650] [2021-11-07 01:13:41,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750733650] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:41,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:13:41,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150388821] [2021-11-07 01:13:41,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:13:41,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:13:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:13:41,602 INFO L87 Difference]: Start difference. First operand has 231 states, 224 states have (on average 1.71875) internal successors, (385), 230 states have internal predecessors, (385), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:41,673 INFO L93 Difference]: Finished difference Result 460 states and 768 transitions. [2021-11-07 01:13:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:13:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-07 01:13:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:41,699 INFO L225 Difference]: With dead ends: 460 [2021-11-07 01:13:41,699 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 01:13:41,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:13:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 01:13:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 01:13:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 01:13:41,795 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 01:13:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:41,796 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 01:13:41,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 01:13:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:13:41,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:41,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:13:41,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:42,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:42,019 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:42,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:42,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 01:13:42,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:42,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983871442] [2021-11-07 01:13:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:42,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:42,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:42,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:13:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:42,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:13:42,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:42,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:42,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:42,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983871442] [2021-11-07 01:13:42,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983871442] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:42,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:42,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:13:42,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125599525] [2021-11-07 01:13:42,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:13:42,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:42,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:13:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:13:42,513 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:46,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:46,843 INFO L93 Difference]: Finished difference Result 502 states and 660 transitions. [2021-11-07 01:13:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-07 01:13:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:46,848 INFO L225 Difference]: With dead ends: 502 [2021-11-07 01:13:46,848 INFO L226 Difference]: Without dead ends: 304 [2021-11-07 01:13:46,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 01:13:46,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-07 01:13:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2021-11-07 01:13:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.3423728813559321) internal successors, (396), 300 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 396 transitions. [2021-11-07 01:13:46,875 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 396 transitions. Word has length 12 [2021-11-07 01:13:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:46,875 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 396 transitions. [2021-11-07 01:13:46,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 396 transitions. [2021-11-07 01:13:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:13:46,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:46,878 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 01:13:46,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:47,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:47,086 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash 627335073, now seen corresponding path program 1 times [2021-11-07 01:13:47,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:47,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850537494] [2021-11-07 01:13:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:47,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:47,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:47,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:47,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:13:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:47,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:13:47,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:47,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:47,740 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:47,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850537494] [2021-11-07 01:13:47,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850537494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:47,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:47,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:13:47,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056223865] [2021-11-07 01:13:47,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:13:47,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:13:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:13:47,744 INFO L87 Difference]: Start difference. First operand 301 states and 396 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 01:13:47,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:47,940 INFO L93 Difference]: Finished difference Result 513 states and 674 transitions. [2021-11-07 01:13:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:47,941 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 01:13:47,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:47,946 INFO L225 Difference]: With dead ends: 513 [2021-11-07 01:13:47,946 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 01:13:47,953 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 01:13:47,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 01:13:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2021-11-07 01:13:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 301 states have (on average 1.282392026578073) internal successors, (386), 306 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 386 transitions. [2021-11-07 01:13:47,979 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 386 transitions. Word has length 44 [2021-11-07 01:13:47,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:47,980 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 386 transitions. [2021-11-07 01:13:47,980 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 01:13:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 386 transitions. [2021-11-07 01:13:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:13:47,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:47,983 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 01:13:47,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:48,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:48,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash -317553387, now seen corresponding path program 1 times [2021-11-07 01:13:48,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:48,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830652051] [2021-11-07 01:13:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:48,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:48,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:48,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:13:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:13:48,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:48,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:49,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:49,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830652051] [2021-11-07 01:13:49,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830652051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:49,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:49,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-07 01:13:49,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468602786] [2021-11-07 01:13:49,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:13:49,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:13:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:49,518 INFO L87 Difference]: Start difference. First operand 307 states and 386 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 01:13:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:13:49,706 INFO L93 Difference]: Finished difference Result 505 states and 628 transitions. [2021-11-07 01:13:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:13:49,707 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 01:13:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:13:49,710 INFO L225 Difference]: With dead ends: 505 [2021-11-07 01:13:49,710 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 01:13:49,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:13:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 01:13:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 295. [2021-11-07 01:13:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 294 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:13:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 366 transitions. [2021-11-07 01:13:49,731 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 366 transitions. Word has length 44 [2021-11-07 01:13:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:13:49,733 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 366 transitions. [2021-11-07 01:13:49,733 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 01:13:49,733 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 366 transitions. [2021-11-07 01:13:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:13:49,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:13:49,738 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 01:13:49,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:13:49,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:13:49,954 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:13:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:13:49,956 INFO L85 PathProgramCache]: Analyzing trace with hash -575718825, now seen corresponding path program 1 times [2021-11-07 01:13:49,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:13:49,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136745216] [2021-11-07 01:13:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:13:49,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:13:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:13:49,965 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:13:49,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:13:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:13:50,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:13:50,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:13:50,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:13:50,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:13:50,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:13:50,528 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:13:50,529 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 01:13:50,634 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:13:50,636 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 01:13:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:50,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:13:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:13:51,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:13:51,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136745216] [2021-11-07 01:13:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136745216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:13:51,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:13:51,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:13:51,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594072281] [2021-11-07 01:13:51,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:13:51,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:13:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:13:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:13:51,049 INFO L87 Difference]: Start difference. First operand 295 states and 366 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 01:14:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:02,119 INFO L93 Difference]: Finished difference Result 620 states and 749 transitions. [2021-11-07 01:14:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:02,123 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 01:14:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:02,127 INFO L225 Difference]: With dead ends: 620 [2021-11-07 01:14:02,127 INFO L226 Difference]: Without dead ends: 456 [2021-11-07 01:14:02,132 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 01:14:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-07 01:14:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 294. [2021-11-07 01:14:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 288 states have (on average 1.2638888888888888) internal successors, (364), 293 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 364 transitions. [2021-11-07 01:14:02,150 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 364 transitions. Word has length 44 [2021-11-07 01:14:02,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:02,151 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 364 transitions. [2021-11-07 01:14:02,151 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 01:14:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 364 transitions. [2021-11-07 01:14:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:14:02,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:02,162 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, 1, 1] [2021-11-07 01:14:02,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:02,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:02,370 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:02,370 INFO L85 PathProgramCache]: Analyzing trace with hash 474525043, now seen corresponding path program 1 times [2021-11-07 01:14:02,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:02,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759372418] [2021-11-07 01:14:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:02,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:02,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:02,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:14:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:02,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:14:02,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:03,120 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 01:14:03,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:03,429 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 01:14:03,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:03,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759372418] [2021-11-07 01:14:03,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759372418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:03,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:03,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:14:03,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617913816] [2021-11-07 01:14:03,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:14:03,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:14:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:14:03,438 INFO L87 Difference]: Start difference. First operand 294 states and 364 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:03,590 INFO L93 Difference]: Finished difference Result 587 states and 733 transitions. [2021-11-07 01:14:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 71 [2021-11-07 01:14:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:03,593 INFO L225 Difference]: With dead ends: 587 [2021-11-07 01:14:03,594 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 01:14:03,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:14:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 01:14:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-11-07 01:14:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 294 states have (on average 1.2040816326530612) internal successors, (354), 299 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 354 transitions. [2021-11-07 01:14:03,611 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 354 transitions. Word has length 71 [2021-11-07 01:14:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:03,612 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 354 transitions. [2021-11-07 01:14:03,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 354 transitions. [2021-11-07 01:14:03,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:14:03,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:03,614 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, 1, 1] [2021-11-07 01:14:03,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:03,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 01:14:03,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:03,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552936715] [2021-11-07 01:14:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:03,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:03,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:03,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:03,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:14:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:04,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:14:04,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:04,660 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 01:14:04,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:04,909 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 01:14:04,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:04,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552936715] [2021-11-07 01:14:04,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552936715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:04,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:14:04,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:14:04,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684170167] [2021-11-07 01:14:04,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:04,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:04,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:04,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:04,912 INFO L87 Difference]: Start difference. First operand 300 states and 354 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 01:14:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:04,987 INFO L93 Difference]: Finished difference Result 558 states and 665 transitions. [2021-11-07 01:14:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:14:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 71 [2021-11-07 01:14:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:04,991 INFO L225 Difference]: With dead ends: 558 [2021-11-07 01:14:04,991 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 01:14:04,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:14:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 01:14:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2021-11-07 01:14:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 297 states have (on average 1.202020202020202) internal successors, (357), 302 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 357 transitions. [2021-11-07 01:14:05,010 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 357 transitions. Word has length 71 [2021-11-07 01:14:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:05,011 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 357 transitions. [2021-11-07 01:14:05,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 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 01:14:05,011 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 357 transitions. [2021-11-07 01:14:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:14:05,012 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:05,013 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] [2021-11-07 01:14:05,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 01:14:05,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:05,234 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:05,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:05,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1065048653, now seen corresponding path program 1 times [2021-11-07 01:14:05,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:05,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053172494] [2021-11-07 01:14:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:05,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:05,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:05,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:05,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:14:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:05,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:06,022 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 01:14:06,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:06,333 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 01:14:06,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053172494] [2021-11-07 01:14:06,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053172494] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1862015279] [2021-11-07 01:14:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:06,335 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:06,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:06,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:06,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 01:14:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:07,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:07,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:07,283 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 01:14:07,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:07,495 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 01:14:07,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1862015279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:07,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429672387] [2021-11-07 01:14:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:07,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:07,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:07,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:07,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:14:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:08,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:14:08,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:08,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:08,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:08,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 01:14:08,379 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 01:14:08,380 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 01:14:08,469 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 01:14:08,469 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 01:14:08,511 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 01:14:08,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:08,750 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 01:14:08,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429672387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:08,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 01:14:08,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-11-07 01:14:08,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120716696] [2021-11-07 01:14:08,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:14:08,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:14:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:14:08,753 INFO L87 Difference]: Start difference. First operand 303 states and 357 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:16,819 INFO L93 Difference]: Finished difference Result 465 states and 547 transitions. [2021-11-07 01:14:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:14:16,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 74 [2021-11-07 01:14:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:16,823 INFO L225 Difference]: With dead ends: 465 [2021-11-07 01:14:16,823 INFO L226 Difference]: Without dead ends: 440 [2021-11-07 01:14:16,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 428 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 01:14:16,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-07 01:14:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 305. [2021-11-07 01:14:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 299 states have (on average 1.2006688963210703) internal successors, (359), 304 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 01:14:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 359 transitions. [2021-11-07 01:14:16,837 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 359 transitions. Word has length 74 [2021-11-07 01:14:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:16,837 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 359 transitions. [2021-11-07 01:14:16,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 359 transitions. [2021-11-07 01:14:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 01:14:16,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:16,841 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 01:14:16,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:17,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:14:17,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-07 01:14:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:17,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -786181332, now seen corresponding path program 1 times [2021-11-07 01:14:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516379902] [2021-11-07 01:14:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:17,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:17,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:17,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:17,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:14:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:18,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:18,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:18,461 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 01:14:18,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:18,901 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 01:14:18,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:18,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516379902] [2021-11-07 01:14:18,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516379902] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:18,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [901594887] [2021-11-07 01:14:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:18,902 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:18,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:18,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:18,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 01:14:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:14:19,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:20,359 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 01:14:20,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:20,817 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 01:14:20,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [901594887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:14:20,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:14:20,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 01:14:20,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068934663] [2021-11-07 01:14:20,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:14:20,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:14:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:20,837 INFO L87 Difference]: Start difference. First operand 305 states and 359 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 01:14:26,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:26,250 INFO L93 Difference]: Finished difference Result 692 states and 822 transitions. [2021-11-07 01:14:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:14:26,251 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 01:14:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:26,255 INFO L225 Difference]: With dead ends: 692 [2021-11-07 01:14:26,255 INFO L226 Difference]: Without dead ends: 432 [2021-11-07 01:14:26,256 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 01:14:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-07 01:14:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 380. [2021-11-07 01:14:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 374 states have (on average 1.2005347593582887) internal successors, (449), 379 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 449 transitions. [2021-11-07 01:14:26,278 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 449 transitions. Word has length 106 [2021-11-07 01:14:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:26,279 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 449 transitions. [2021-11-07 01:14:26,280 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 01:14:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 449 transitions. [2021-11-07 01:14:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:14:26,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:26,282 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 01:14:26,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:26,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:26,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:26,694 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:26,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash 530496366, now seen corresponding path program 1 times [2021-11-07 01:14:26,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:26,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520508746] [2021-11-07 01:14:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:26,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:26,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:26,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:26,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:14:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:27,848 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 01:14:27,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:28,257 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 01:14:28,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:28,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520508746] [2021-11-07 01:14:28,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520508746] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:28,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [992367233] [2021-11-07 01:14:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:28,258 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:28,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:28,259 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:28,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 01:14:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:14:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:29,624 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 01:14:29,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:29,975 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 01:14:29,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [992367233] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:29,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912573225] [2021-11-07 01:14:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:14:29,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:29,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:29,981 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:30,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:14:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:14:30,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:14:30,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:31,238 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 01:14:31,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:31,555 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 01:14:31,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912573225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:31,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:31,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-07 01:14:31,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666358256] [2021-11-07 01:14:31,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:14:31,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:14:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:14:31,558 INFO L87 Difference]: Start difference. First operand 380 states and 449 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 01:14:31,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:31,962 INFO L93 Difference]: Finished difference Result 718 states and 859 transitions. [2021-11-07 01:14:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:14:31,963 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 01:14:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:31,969 INFO L225 Difference]: With dead ends: 718 [2021-11-07 01:14:31,969 INFO L226 Difference]: Without dead ends: 388 [2021-11-07 01:14:31,973 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 01:14:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-07 01:14:31,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2021-11-07 01:14:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.1963350785340314) internal successors, (457), 387 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:31,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 457 transitions. [2021-11-07 01:14:31,998 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 457 transitions. Word has length 113 [2021-11-07 01:14:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:31,999 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 457 transitions. [2021-11-07 01:14:31,999 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 01:14:31,999 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 457 transitions. [2021-11-07 01:14:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:14:32,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:32,001 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 01:14:32,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:32,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:32,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:32,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:32,623 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1097324242, now seen corresponding path program 2 times [2021-11-07 01:14:32,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:32,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398854454] [2021-11-07 01:14:32,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:32,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:32,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:32,626 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:32,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:14:33,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:33,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:33,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:14:33,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:34,321 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 01:14:34,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:35,085 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 01:14:35,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:35,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398854454] [2021-11-07 01:14:35,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398854454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:35,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391670777] [2021-11-07 01:14:35,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:35,086 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:35,087 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:35,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 01:14:36,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:36,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:36,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:14:36,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:37,183 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 01:14:37,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:37,580 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 01:14:37,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391670777] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:37,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820838766] [2021-11-07 01:14:37,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 01:14:37,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:14:37,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:14:37,589 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:14:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:14:38,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 01:14:38,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:14:38,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:39,449 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 01:14:39,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:40,674 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 01:14:40,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820838766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:40,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:14:40,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-07 01:14:40,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254343181] [2021-11-07 01:14:40,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:14:40,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:14:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:14:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:14:40,694 INFO L87 Difference]: Start difference. First operand 388 states and 457 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 01:14:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:14:46,097 INFO L93 Difference]: Finished difference Result 1066 states and 1283 transitions. [2021-11-07 01:14:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 01:14:46,100 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 01:14:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:14:46,106 INFO L225 Difference]: With dead ends: 1066 [2021-11-07 01:14:46,106 INFO L226 Difference]: Without dead ends: 732 [2021-11-07 01:14:46,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:14:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-07 01:14:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 410. [2021-11-07 01:14:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.188118811881188) internal successors, (480), 409 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:14:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 480 transitions. [2021-11-07 01:14:46,142 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 480 transitions. Word has length 121 [2021-11-07 01:14:46,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:14:46,142 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 480 transitions. [2021-11-07 01:14:46,143 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 01:14:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 480 transitions. [2021-11-07 01:14:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 01:14:46,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:14:46,147 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 01:14:46,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:46,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:46,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:14:46,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:14:46,762 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:14:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:14:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1558698834, now seen corresponding path program 3 times [2021-11-07 01:14:46,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:14:46,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480809128] [2021-11-07 01:14:46,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:14:46,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:14:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:14:46,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:14:46,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:14:51,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:14:51,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:14:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:14:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:14:52,390 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 01:14:52,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:14:54,432 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 01:14:54,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:14:54,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480809128] [2021-11-07 01:14:54,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480809128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:14:54,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1058823067] [2021-11-07 01:14:54,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:14:54,433 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:14:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:14:54,434 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:14:54,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 01:15:55,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 01:15:55,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:15:55,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:15:55,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:15:55,680 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 01:15:55,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:15:56,286 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 01:15:56,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1058823067] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:15:56,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732443549] [2021-11-07 01:15:56,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:15:56,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:15:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:15:56,290 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:15:56,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb4537a7-5f0f-4d0e-9c1a-7113b9cede1f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process