./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:33:13,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:33:13,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:33:14,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:33:14,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:33:14,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:33:14,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:33:14,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:33:14,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:33:14,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:33:14,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:33:14,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:33:14,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:33:14,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:33:14,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:33:14,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:33:14,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:33:14,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:33:14,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:33:14,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:33:14,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:33:14,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:33:14,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:33:14,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:33:14,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:33:14,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:33:14,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:33:14,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:33:14,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:33:14,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:33:14,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:33:14,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:33:14,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:33:14,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:33:14,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:33:14,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:33:14,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:33:14,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:33:14,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:33:14,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:33:14,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:33:14,085 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 23:33:14,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:33:14,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:33:14,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:33:14,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:33:14,132 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:33:14,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:33:14,132 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:33:14,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:33:14,133 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:33:14,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:33:14,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:33:14,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:33:14,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:33:14,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:33:14,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:33:14,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:33:14,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:33:14,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:33:14,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:33:14,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:33:14,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:33:14,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:33:14,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:33:14,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:33:14,138 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:33:14,138 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:33:14,139 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:33:14,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:33:14,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:33:14,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:33:14,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:33:14,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:33:14,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:33:14,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:14,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:33:14,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:33:14,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:33:14,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:33:14,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:33:14,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:33:14,143 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_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-12 23:33:14,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:33:14,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:33:14,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:33:14,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:33:14,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:33:14,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-12 23:33:14,524 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/cf90e9897/aa5b25d7521d4f7f854c9e3daf9aafd6/FLAG9af66cca8 [2021-11-12 23:33:15,252 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:33:15,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-12 23:33:15,280 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/cf90e9897/aa5b25d7521d4f7f854c9e3daf9aafd6/FLAG9af66cca8 [2021-11-12 23:33:15,331 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/cf90e9897/aa5b25d7521d4f7f854c9e3daf9aafd6 [2021-11-12 23:33:15,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:33:15,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:33:15,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:15,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:33:15,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:33:15,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:15" (1/1) ... [2021-11-12 23:33:15,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588f1e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:15, skipping insertion in model container [2021-11-12 23:33:15,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:15" (1/1) ... [2021-11-12 23:33:15,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:33:15,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:33:16,015 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-12 23:33:16,308 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-12 23:33:16,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:16,331 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) [2021-11-12 23:33:16,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2015e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:16, skipping insertion in model container [2021-11-12 23:33:16,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:16,333 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:33:16,335 INFO L158 Benchmark]: Toolchain (without parser) took 996.08ms. Allocated memory is still 98.6MB. Free memory was 57.4MB in the beginning and 52.9MB in the end (delta: 4.5MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-11-12 23:33:16,336 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:33:16,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 991.25ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 52.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-11-12 23:33:16,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 991.25ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 52.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:33:18,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:33:18,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:33:18,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:33:18,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:33:18,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:33:18,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:33:18,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:33:18,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:33:18,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:33:18,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:33:18,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:33:18,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:33:18,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:33:18,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:33:18,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:33:18,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:33:18,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:33:18,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:33:18,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:33:18,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:33:18,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:33:18,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:33:18,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:33:18,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:33:18,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:33:18,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:33:18,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:33:18,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:33:18,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:33:18,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:33:18,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:33:18,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:33:18,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:33:18,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:33:18,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:33:18,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:33:18,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:33:18,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:33:18,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:33:18,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:33:18,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 23:33:18,814 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:33:18,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:33:18,816 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:33:18,816 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:33:18,816 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:33:18,817 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:33:18,817 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:33:18,817 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:33:18,817 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:33:18,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:33:18,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 23:33:18,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 23:33:18,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:33:18,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:33:18,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 23:33:18,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:33:18,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:33:18,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:33:18,823 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 23:33:18,823 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 23:33:18,824 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 23:33:18,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:33:18,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:33:18,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:33:18,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:33:18,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:33:18,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:33:18,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:33:18,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:33:18,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:33:18,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:18,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:33:18,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:33:18,828 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:33:18,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:33:18,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:33:18,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:33:18,829 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_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2021-11-12 23:33:19,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:33:19,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:33:19,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:33:19,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:33:19,380 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:33:19,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-12 23:33:19,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/c7634ff3e/945cb73e5142456d9740b5a416bdcd76/FLAGd3bda67a8 [2021-11-12 23:33:20,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:33:20,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2021-11-12 23:33:20,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/c7634ff3e/945cb73e5142456d9740b5a416bdcd76/FLAGd3bda67a8 [2021-11-12 23:33:20,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/data/c7634ff3e/945cb73e5142456d9740b5a416bdcd76 [2021-11-12 23:33:20,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:33:20,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:33:20,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:20,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:33:20,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:33:20,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:20" (1/1) ... [2021-11-12 23:33:20,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f3f98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:20, skipping insertion in model container [2021-11-12 23:33:20,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:20" (1/1) ... [2021-11-12 23:33:20,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:33:20,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:33:21,061 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-12 23:33:21,379 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-12 23:33:21,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:21,401 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:33:21,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:33:21,452 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-12 23:33:21,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-12 23:33:21,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:21,569 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:33:21,616 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2021-11-12 23:33:21,695 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_99192fb4-7295-4849-823e-543e6fa7f301/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2021-11-12 23:33:21,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:21,761 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:33:21,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21 WrapperNode [2021-11-12 23:33:21,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:21,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:21,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:33:21,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:33:21,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:21,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:21,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:21,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:33:21,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:33:21,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:33:21,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:21,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:21,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:21,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:22,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:22,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:22,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:22,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:33:22,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:33:22,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:33:22,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:33:22,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (1/1) ... [2021-11-12 23:33:22,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:22,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:33:22,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:33:22,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:33:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:33:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:33:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:33:22,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:33:22,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:33:22,517 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:33:29,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:33:29,968 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-12 23:33:29,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:33:29 BoogieIcfgContainer [2021-11-12 23:33:29,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:33:29,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:33:29,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:33:29,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:33:29,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:33:20" (1/3) ... [2021-11-12 23:33:29,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca53b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:33:29, skipping insertion in model container [2021-11-12 23:33:29,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:21" (2/3) ... [2021-11-12 23:33:29,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca53b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:33:29, skipping insertion in model container [2021-11-12 23:33:29,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:33:29" (3/3) ... [2021-11-12 23:33:29,991 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2021-11-12 23:33:30,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:33:30,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-12 23:33:30,066 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:33:30,074 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-12 23:33:30,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-12 23:33:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 23:33:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:33:30,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:30,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:33:30,159 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:33:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-12 23:33:30,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:30,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343989255] [2021-11-12 23:33:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:30,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:30,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:30,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:33:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:30,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:33:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:30,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:33:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:30,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:30,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:30,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343989255] [2021-11-12 23:33:30,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343989255] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:30,493 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:30,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:33:30,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073727288] [2021-11-12 23:33:30,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:30,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:33:30,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:33:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:30,576 INFO L87 Difference]: Start difference. First operand has 2071 states, 1032 states have (on average 2.123062015503876) internal successors, (2191), 2065 states have internal predecessors, (2191), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-12 23:33:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:34,069 INFO L93 Difference]: Finished difference Result 2235 states and 3301 transitions. [2021-11-12 23:33:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:33:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-12 23:33:34,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:34,113 INFO L225 Difference]: With dead ends: 2235 [2021-11-12 23:33:34,114 INFO L226 Difference]: Without dead ends: 2233 [2021-11-12 23:33:34,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:34,119 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 1985 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2737.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.70ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3267.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:34,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2488 Valid, 2785 Invalid, 1151 Unknown, 0 Unchecked, 38.70ms Time], IncrementalHoareTripleChecker [16 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 3267.50ms Time] [2021-11-12 23:33:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2021-11-12 23:33:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2055. [2021-11-12 23:33:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 1032 states have (on average 2.0416666666666665) internal successors, (2107), 2049 states have internal predecessors, (2107), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 23:33:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3113 transitions. [2021-11-12 23:33:34,799 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3113 transitions. Word has length 3 [2021-11-12 23:33:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:34,800 INFO L470 AbstractCegarLoop]: Abstraction has 2055 states and 3113 transitions. [2021-11-12 23:33:34,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-12 23:33:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3113 transitions. [2021-11-12 23:33:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 23:33:34,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:34,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 23:33:34,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:35,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:35,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:33:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-12 23:33:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:35,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445678320] [2021-11-12 23:33:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:35,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:35,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:35,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:35,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:33:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:35,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:33:35,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:35,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:33:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:35,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:35,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:35,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445678320] [2021-11-12 23:33:35,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445678320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:35,258 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:35,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:33:35,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512473713] [2021-11-12 23:33:35,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:33:35,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:33:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:35,263 INFO L87 Difference]: Start difference. First operand 2055 states and 3113 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-12 23:33:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:45,678 INFO L93 Difference]: Finished difference Result 3538 states and 5631 transitions. [2021-11-12 23:33:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:33:45,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-12 23:33:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:45,708 INFO L225 Difference]: With dead ends: 3538 [2021-11-12 23:33:45,708 INFO L226 Difference]: Without dead ends: 3538 [2021-11-12 23:33:45,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:45,710 INFO L933 BasicCegarLoop]: 3276 mSDtfsCounter, 4607 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8953.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5607 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.72ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10180.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:45,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5607 Valid, 4902 Invalid, 2394 Unknown, 0 Unchecked, 46.72ms Time], IncrementalHoareTripleChecker [518 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 10180.76ms Time] [2021-11-12 23:33:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-11-12 23:33:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 2090. [2021-11-12 23:33:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1076 states have (on average 2.0315985130111525) internal successors, (2186), 2084 states have internal predecessors, (2186), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 23:33:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3192 transitions. [2021-11-12 23:33:46,023 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3192 transitions. Word has length 3 [2021-11-12 23:33:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:46,023 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3192 transitions. [2021-11-12 23:33:46,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-12 23:33:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3192 transitions. [2021-11-12 23:33:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:33:46,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:46,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:33:46,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:46,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:46,239 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:33:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-12 23:33:46,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:46,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426859682] [2021-11-12 23:33:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:46,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:46,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:46,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:46,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:33:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:46,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:33:46,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:46,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:33:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:46,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:46,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:46,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426859682] [2021-11-12 23:33:46,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426859682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:46,485 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:46,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:33:46,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923345645] [2021-11-12 23:33:46,486 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:46,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:33:46,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:33:46,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:46,488 INFO L87 Difference]: Start difference. First operand 2090 states and 3192 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:33:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:49,640 INFO L93 Difference]: Finished difference Result 3257 states and 5376 transitions. [2021-11-12 23:33:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:33:49,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 23:33:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:49,667 INFO L225 Difference]: With dead ends: 3257 [2021-11-12 23:33:49,669 INFO L226 Difference]: Without dead ends: 3257 [2021-11-12 23:33:49,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:49,673 INFO L933 BasicCegarLoop]: 4868 mSDtfsCounter, 1806 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2547.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7126 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.37ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3034.21ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:49,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2309 Valid, 7126 Invalid, 1180 Unknown, 0 Unchecked, 27.37ms Time], IncrementalHoareTripleChecker [51 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 3034.21ms Time] [2021-11-12 23:33:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-12 23:33:49,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2043. [2021-11-12 23:33:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1076 states have (on average 1.9851301115241635) internal successors, (2136), 2037 states have internal predecessors, (2136), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 23:33:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3142 transitions. [2021-11-12 23:33:50,010 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3142 transitions. Word has length 8 [2021-11-12 23:33:50,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:50,010 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 3142 transitions. [2021-11-12 23:33:50,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:33:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3142 transitions. [2021-11-12 23:33:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 23:33:50,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:50,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:33:50,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:50,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:50,225 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:33:50,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-12 23:33:50,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:50,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394399987] [2021-11-12 23:33:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:50,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:50,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:50,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:50,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:33:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:50,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:33:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:50,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:33:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:50,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:50,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:50,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394399987] [2021-11-12 23:33:50,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394399987] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:50,563 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:50,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-12 23:33:50,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432041503] [2021-11-12 23:33:50,564 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:33:50,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:33:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:50,565 INFO L87 Difference]: Start difference. First operand 2043 states and 3142 transitions. Second operand has 4 states, 3 states have (on average 4.0) 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) [2021-11-12 23:33:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:58,262 INFO L93 Difference]: Finished difference Result 3287 states and 5370 transitions. [2021-11-12 23:33:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:33:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) 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 8 [2021-11-12 23:33:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:58,295 INFO L225 Difference]: With dead ends: 3287 [2021-11-12 23:33:58,297 INFO L226 Difference]: Without dead ends: 3287 [2021-11-12 23:33:58,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:33:58,304 INFO L933 BasicCegarLoop]: 5028 mSDtfsCounter, 3022 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6684.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.18ms SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7545.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:58,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 7450 Invalid, 1700 Unknown, 0 Unchecked, 33.18ms Time], IncrementalHoareTripleChecker [514 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 7545.15ms Time] [2021-11-12 23:33:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-11-12 23:33:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2033. [2021-11-12 23:33:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1076 states have (on average 1.9730483271375465) internal successors, (2123), 2027 states have internal predecessors, (2123), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-12 23:33:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 3129 transitions. [2021-11-12 23:33:58,672 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 3129 transitions. Word has length 8 [2021-11-12 23:33:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:58,673 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 3129 transitions. [2021-11-12 23:33:58,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) 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) [2021-11-12 23:33:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 3129 transitions. [2021-11-12 23:33:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:33:58,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:58,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:33:58,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:33:58,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:33:58,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:33:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash 874110197, now seen corresponding path program 1 times [2021-11-12 23:33:58,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:33:58,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369235680] [2021-11-12 23:33:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:58,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:33:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:33:58,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:33:58,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:33:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:59,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:33:59,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:59,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:33:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:59,217 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:33:59,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369235680] [2021-11-12 23:33:59,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369235680] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:59,218 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:59,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:33:59,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744384784] [2021-11-12 23:33:59,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:59,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:33:59,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:33:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:33:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:59,220 INFO L87 Difference]: Start difference. First operand 2033 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-12 23:33:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:59,630 INFO L93 Difference]: Finished difference Result 3496 states and 5626 transitions. [2021-11-12 23:33:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:33:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-11-12 23:33:59,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:59,662 INFO L225 Difference]: With dead ends: 3496 [2021-11-12 23:33:59,663 INFO L226 Difference]: Without dead ends: 3496 [2021-11-12 23:33:59,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:33:59,665 INFO L933 BasicCegarLoop]: 3608 mSDtfsCounter, 1560 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 6497 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.71ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 336.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:59,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 6497 Invalid, 119 Unknown, 0 Unchecked, 14.71ms Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 336.00ms Time] [2021-11-12 23:33:59,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-11-12 23:34:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 3203. [2021-11-12 23:34:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3203 states, 1746 states have (on average 1.9558991981672393) internal successors, (3415), 3197 states have internal predecessors, (3415), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 5421 transitions. [2021-11-12 23:34:00,057 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 5421 transitions. Word has length 11 [2021-11-12 23:34:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:00,058 INFO L470 AbstractCegarLoop]: Abstraction has 3203 states and 5421 transitions. [2021-11-12 23:34:00,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-12 23:34:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 5421 transitions. [2021-11-12 23:34:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:34:00,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:00,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:00,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:00,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:00,271 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-12 23:34:00,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:00,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197512315] [2021-11-12 23:34:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:00,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:00,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:00,273 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:00,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:34:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:34:00,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:00,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:00,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:00,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197512315] [2021-11-12 23:34:00,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197512315] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:00,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:00,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:34:00,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194769184] [2021-11-12 23:34:00,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:00,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:34:00,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:34:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:00,437 INFO L87 Difference]: Start difference. First operand 3203 states and 5421 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 23:34:01,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:01,205 INFO L93 Difference]: Finished difference Result 3357 states and 5561 transitions. [2021-11-12 23:34:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:34:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 13 [2021-11-12 23:34:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:01,241 INFO L225 Difference]: With dead ends: 3357 [2021-11-12 23:34:01,241 INFO L226 Difference]: Without dead ends: 3357 [2021-11-12 23:34:01,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:01,242 INFO L933 BasicCegarLoop]: 3204 mSDtfsCounter, 2788 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 598.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3288 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.94ms SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:01,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3288 Valid, 4523 Invalid, 513 Unknown, 0 Unchecked, 8.94ms Time], IncrementalHoareTripleChecker [500 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 716.69ms Time] [2021-11-12 23:34:01,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-11-12 23:34:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3143. [2021-11-12 23:34:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 1710 states have (on average 1.946783625730994) internal successors, (3329), 3137 states have internal predecessors, (3329), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5335 transitions. [2021-11-12 23:34:01,524 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5335 transitions. Word has length 13 [2021-11-12 23:34:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:01,525 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5335 transitions. [2021-11-12 23:34:01,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-12 23:34:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5335 transitions. [2021-11-12 23:34:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:34:01,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:01,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:01,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:01,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:01,738 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:01,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash 240246254, now seen corresponding path program 1 times [2021-11-12 23:34:01,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:01,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980904003] [2021-11-12 23:34:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:01,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:01,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:01,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:34:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:01,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:34:01,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:01,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:34:01,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:34:01,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:34:01,967 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:34:01,970 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 [2021-11-12 23:34:02,034 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:34:02,035 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 [2021-11-12 23:34:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:02,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:02,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:02,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980904003] [2021-11-12 23:34:02,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980904003] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:02,145 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:02,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:34:02,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471868034] [2021-11-12 23:34:02,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:02,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:34:02,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:34:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:34:02,147 INFO L87 Difference]: Start difference. First operand 3143 states and 5335 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-12 23:34:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:06,366 INFO L93 Difference]: Finished difference Result 5460 states and 9683 transitions. [2021-11-12 23:34:06,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:34:06,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 14 [2021-11-12 23:34:06,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:06,399 INFO L225 Difference]: With dead ends: 5460 [2021-11-12 23:34:06,399 INFO L226 Difference]: Without dead ends: 5460 [2021-11-12 23:34:06,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:34:06,400 INFO L933 BasicCegarLoop]: 3461 mSDtfsCounter, 2664 mSDsluCounter, 5813 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3438.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3164 SdHoareTripleChecker+Valid, 9274 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.24ms SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4089.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:06,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3164 Valid, 9274 Invalid, 1222 Unknown, 0 Unchecked, 22.24ms Time], IncrementalHoareTripleChecker [504 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4089.39ms Time] [2021-11-12 23:34:06,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-11-12 23:34:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 3142. [2021-11-12 23:34:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 1709 states have (on average 1.9467524868344062) internal successors, (3327), 3136 states have internal predecessors, (3327), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 5333 transitions. [2021-11-12 23:34:06,894 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 5333 transitions. Word has length 14 [2021-11-12 23:34:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:06,894 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 5333 transitions. [2021-11-12 23:34:06,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-12 23:34:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 5333 transitions. [2021-11-12 23:34:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 23:34:06,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:06,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:06,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:07,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:07,114 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-12 23:34:07,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:07,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584880143] [2021-11-12 23:34:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:07,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:07,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:07,118 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:07,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:34:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:07,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:34:07,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:07,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:07,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:07,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:07,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584880143] [2021-11-12 23:34:07,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584880143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:07,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:07,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:34:07,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403083789] [2021-11-12 23:34:07,310 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:07,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:34:07,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:34:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:07,311 INFO L87 Difference]: Start difference. First operand 3142 states and 5333 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-12 23:34:07,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:07,377 INFO L93 Difference]: Finished difference Result 3082 states and 5247 transitions. [2021-11-12 23:34:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:34:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 18 [2021-11-12 23:34:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:07,388 INFO L225 Difference]: With dead ends: 3082 [2021-11-12 23:34:07,388 INFO L226 Difference]: Without dead ends: 3082 [2021-11-12 23:34:07,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:07,389 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1935 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:07,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 4010 Invalid, 14 Unknown, 0 Unchecked, 6.74ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 18.46ms Time] [2021-11-12 23:34:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2021-11-12 23:34:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3082. [2021-11-12 23:34:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 1673 states have (on average 1.9372384937238494) internal successors, (3241), 3076 states have internal predecessors, (3241), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:07,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5247 transitions. [2021-11-12 23:34:07,722 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5247 transitions. Word has length 18 [2021-11-12 23:34:07,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:07,722 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5247 transitions. [2021-11-12 23:34:07,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-11-12 23:34:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5247 transitions. [2021-11-12 23:34:07,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:34:07,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:07,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:07,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:34:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:07,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-12 23:34:07,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:07,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539086059] [2021-11-12 23:34:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:07,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:07,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:07,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:07,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:34:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:34:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:08,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:08,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:08,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539086059] [2021-11-12 23:34:08,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539086059] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:08,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:08,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:34:08,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438540647] [2021-11-12 23:34:08,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:08,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:34:08,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:34:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:34:08,150 INFO L87 Difference]: Start difference. First operand 3082 states and 5247 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-12 23:34:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:08,987 INFO L93 Difference]: Finished difference Result 3054 states and 5191 transitions. [2021-11-12 23:34:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:34:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 20 [2021-11-12 23:34:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:08,994 INFO L225 Difference]: With dead ends: 3054 [2021-11-12 23:34:08,995 INFO L226 Difference]: Without dead ends: 3054 [2021-11-12 23:34:08,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:34:08,995 INFO L933 BasicCegarLoop]: 2911 mSDtfsCounter, 3802 mSDsluCounter, 3431 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 658.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4305 SdHoareTripleChecker+Valid, 6342 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.75ms SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 775.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4305 Valid, 6342 Invalid, 579 Unknown, 0 Unchecked, 13.75ms Time], IncrementalHoareTripleChecker [545 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 775.24ms Time] [2021-11-12 23:34:09,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-11-12 23:34:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 3052. [2021-11-12 23:34:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3052 states, 1657 states have (on average 1.9209414604707302) internal successors, (3183), 3046 states have internal predecessors, (3183), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 5189 transitions. [2021-11-12 23:34:09,315 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 5189 transitions. Word has length 20 [2021-11-12 23:34:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:09,316 INFO L470 AbstractCegarLoop]: Abstraction has 3052 states and 5189 transitions. [2021-11-12 23:34:09,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2021-11-12 23:34:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 5189 transitions. [2021-11-12 23:34:09,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:34:09,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:09,318 INFO L514 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] [2021-11-12 23:34:09,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:09,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:09,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:09,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-12 23:34:09,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:09,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886810366] [2021-11-12 23:34:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:09,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:09,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:09,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:09,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:34:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:09,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:34:09,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:09,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:09,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:09,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:09,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886810366] [2021-11-12 23:34:09,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886810366] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:09,898 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:09,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:34:09,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047837920] [2021-11-12 23:34:09,898 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:09,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:34:09,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:34:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:09,901 INFO L87 Difference]: Start difference. First operand 3052 states and 5189 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 23:34:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:13,791 INFO L93 Difference]: Finished difference Result 5485 states and 9686 transitions. [2021-11-12 23:34:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:34:13,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-12 23:34:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:13,810 INFO L225 Difference]: With dead ends: 5485 [2021-11-12 23:34:13,811 INFO L226 Difference]: Without dead ends: 5485 [2021-11-12 23:34:13,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:34:13,812 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 3447 mSDsluCounter, 3517 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 1019 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3226.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.73ms SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3783.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:13,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 6507 Invalid, 2890 Unknown, 0 Unchecked, 18.73ms Time], IncrementalHoareTripleChecker [1019 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 3783.67ms Time] [2021-11-12 23:34:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2021-11-12 23:34:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 3048. [2021-11-12 23:34:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 1657 states have (on average 1.916113458056729) internal successors, (3175), 3042 states have internal predecessors, (3175), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 5181 transitions. [2021-11-12 23:34:14,228 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 5181 transitions. Word has length 34 [2021-11-12 23:34:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:14,228 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 5181 transitions. [2021-11-12 23:34:14,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-12 23:34:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 5181 transitions. [2021-11-12 23:34:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-12 23:34:14,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:14,230 INFO L514 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] [2021-11-12 23:34:14,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:14,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:14,441 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-12 23:34:14,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:14,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537047396] [2021-11-12 23:34:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:14,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:14,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:14,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:34:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:14,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:34:14,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:14,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:14,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:15,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:15,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537047396] [2021-11-12 23:34:15,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537047396] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:15,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:15,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:34:15,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266424455] [2021-11-12 23:34:15,273 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:15,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:34:15,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:34:15,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:34:15,274 INFO L87 Difference]: Start difference. First operand 3048 states and 5181 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 23:34:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:26,606 INFO L93 Difference]: Finished difference Result 5539 states and 9703 transitions. [2021-11-12 23:34:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:34:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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 34 [2021-11-12 23:34:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:26,625 INFO L225 Difference]: With dead ends: 5539 [2021-11-12 23:34:26,625 INFO L226 Difference]: Without dead ends: 5539 [2021-11-12 23:34:26,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:34:26,627 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 4551 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9840.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4551 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.47ms SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11102.67ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:26,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4551 Valid, 12551 Invalid, 4724 Unknown, 0 Unchecked, 29.47ms Time], IncrementalHoareTripleChecker [1511 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 11102.67ms Time] [2021-11-12 23:34:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-11-12 23:34:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 3044. [2021-11-12 23:34:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 1657 states have (on average 1.911285455642728) internal successors, (3167), 3038 states have internal predecessors, (3167), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 5173 transitions. [2021-11-12 23:34:27,187 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 5173 transitions. Word has length 34 [2021-11-12 23:34:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:27,187 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 5173 transitions. [2021-11-12 23:34:27,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 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) [2021-11-12 23:34:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 5173 transitions. [2021-11-12 23:34:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:34:27,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:27,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:27,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:27,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:27,405 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-12 23:34:27,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:27,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894777063] [2021-11-12 23:34:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:27,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:27,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:27,408 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:27,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:34:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:27,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:34:27,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:27,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:27,794 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:27,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894777063] [2021-11-12 23:34:27,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894777063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:27,794 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:27,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:34:27,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762538229] [2021-11-12 23:34:27,795 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:27,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:34:27,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:34:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:34:27,796 INFO L87 Difference]: Start difference. First operand 3044 states and 5173 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-12 23:34:27,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:27,877 INFO L93 Difference]: Finished difference Result 3032 states and 5153 transitions. [2021-11-12 23:34:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:34:27,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2021-11-12 23:34:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:27,888 INFO L225 Difference]: With dead ends: 3032 [2021-11-12 23:34:27,888 INFO L226 Difference]: Without dead ends: 3032 [2021-11-12 23:34:27,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:34:27,889 INFO L933 BasicCegarLoop]: 2905 mSDtfsCounter, 1882 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:27,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 6320 Invalid, 43 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 37.66ms Time] [2021-11-12 23:34:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-11-12 23:34:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3032. [2021-11-12 23:34:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 1645 states have (on average 1.9130699088145897) internal successors, (3147), 3026 states have internal predecessors, (3147), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 5153 transitions. [2021-11-12 23:34:28,182 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 5153 transitions. Word has length 52 [2021-11-12 23:34:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:28,182 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 5153 transitions. [2021-11-12 23:34:28,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-12 23:34:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 5153 transitions. [2021-11-12 23:34:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 23:34:28,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:28,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:28,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:28,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:28,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-12 23:34:28,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:28,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092984501] [2021-11-12 23:34:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:28,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:28,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:28,401 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:28,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:34:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:28,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:34:28,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:28,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:28,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:29,488 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-12 23:34:29,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-12 23:34:29,495 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:34:29,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-12 23:34:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:29,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:34,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:34,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092984501] [2021-11-12 23:34:34,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092984501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:34,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:34,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:34:34,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125799499] [2021-11-12 23:34:34,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:34,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:34:34,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:34:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-12 23:34:34,278 INFO L87 Difference]: Start difference. First operand 3032 states and 5153 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 23:34:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:47,141 INFO L93 Difference]: Finished difference Result 5433 states and 9586 transitions. [2021-11-12 23:34:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:34:47,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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 60 [2021-11-12 23:34:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:47,168 INFO L225 Difference]: With dead ends: 5433 [2021-11-12 23:34:47,169 INFO L226 Difference]: Without dead ends: 5433 [2021-11-12 23:34:47,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:34:47,173 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 3042 mSDsluCounter, 5026 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11026.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 9689 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.67ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2272 IncrementalHoareTripleChecker+Unchecked, 12657.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:47,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 9689 Invalid, 6015 Unknown, 0 Unchecked, 39.67ms Time], IncrementalHoareTripleChecker [55 Valid, 3688 Invalid, 0 Unknown, 2272 Unchecked, 12657.57ms Time] [2021-11-12 23:34:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2021-11-12 23:34:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3010. [2021-11-12 23:34:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 1655 states have (on average 1.8930513595166163) internal successors, (3133), 3004 states have internal predecessors, (3133), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 5139 transitions. [2021-11-12 23:34:47,775 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 5139 transitions. Word has length 60 [2021-11-12 23:34:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:47,776 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 5139 transitions. [2021-11-12 23:34:47,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 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) [2021-11-12 23:34:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 5139 transitions. [2021-11-12 23:34:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-12 23:34:47,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:47,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:47,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:47,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:47,992 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-12 23:34:47,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:47,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418435000] [2021-11-12 23:34:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:47,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:47,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:47,996 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:48,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:34:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:48,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:34:48,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:48,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:48,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-12 23:34:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:48,930 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:48,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418435000] [2021-11-12 23:34:48,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418435000] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:48,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:48,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-12 23:34:48,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056669940] [2021-11-12 23:34:48,931 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:48,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:34:48,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:48,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:34:48,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:34:48,933 INFO L87 Difference]: Start difference. First operand 3010 states and 5139 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 23:34:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:54,799 INFO L93 Difference]: Finished difference Result 3008 states and 5137 transitions. [2021-11-12 23:34:54,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:34:54,800 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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 62 [2021-11-12 23:34:54,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:54,811 INFO L225 Difference]: With dead ends: 3008 [2021-11-12 23:34:54,812 INFO L226 Difference]: Without dead ends: 3008 [2021-11-12 23:34:54,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:34:54,813 INFO L933 BasicCegarLoop]: 2576 mSDtfsCounter, 4833 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5012.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5336 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.05ms SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5762.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:54,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5336 Valid, 4125 Invalid, 1959 Unknown, 0 Unchecked, 19.05ms Time], IncrementalHoareTripleChecker [1022 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 5762.42ms Time] [2021-11-12 23:34:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-11-12 23:34:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-11-12 23:34:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 1655 states have (on average 1.8918429003021149) internal successors, (3131), 3002 states have internal predecessors, (3131), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 5137 transitions. [2021-11-12 23:34:55,145 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 5137 transitions. Word has length 62 [2021-11-12 23:34:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:55,147 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 5137 transitions. [2021-11-12 23:34:55,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2021-11-12 23:34:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 5137 transitions. [2021-11-12 23:34:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:34:55,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:55,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:55,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:55,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:55,365 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-12 23:34:55,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:55,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714299549] [2021-11-12 23:34:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:55,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:55,370 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:55,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:34:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:55,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:34:55,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:55,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:55,695 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 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-12 23:34:55,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-12 23:34:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:55,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:55,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:55,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714299549] [2021-11-12 23:34:55,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714299549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:55,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:55,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:34:55,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818538972] [2021-11-12 23:34:55,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:55,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:34:55,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:34:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:34:55,925 INFO L87 Difference]: Start difference. First operand 3008 states and 5137 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 23:34:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:58,890 INFO L93 Difference]: Finished difference Result 3007 states and 5136 transitions. [2021-11-12 23:34:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:34:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-12 23:34:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:58,898 INFO L225 Difference]: With dead ends: 3007 [2021-11-12 23:34:58,898 INFO L226 Difference]: Without dead ends: 3007 [2021-11-12 23:34:58,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:34:58,899 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 4 mSDsluCounter, 7365 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2503.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10234 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2882.54ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:58,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10234 Invalid, 1248 Unknown, 0 Unchecked, 13.78ms Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2882.54ms Time] [2021-11-12 23:34:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-11-12 23:34:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2021-11-12 23:34:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 1655 states have (on average 1.891238670694864) internal successors, (3130), 3001 states have internal predecessors, (3130), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:34:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 5136 transitions. [2021-11-12 23:34:59,229 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 5136 transitions. Word has length 65 [2021-11-12 23:34:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:59,230 INFO L470 AbstractCegarLoop]: Abstraction has 3007 states and 5136 transitions. [2021-11-12 23:34:59,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-12 23:34:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 5136 transitions. [2021-11-12 23:34:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:34:59,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:59,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:59,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 23:34:59,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:59,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:34:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-12 23:34:59,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:59,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286454703] [2021-11-12 23:34:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:59,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:59,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:59,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:59,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:34:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:59,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:34:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:59,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-12 23:34:59,763 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 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-12 23:34:59,773 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:34:59,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-12 23:34:59,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-12 23:34:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:59,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:00,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:00,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286454703] [2021-11-12 23:35:00,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286454703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:35:00,134 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:35:00,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-12 23:35:00,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951878979] [2021-11-12 23:35:00,134 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:35:00,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:35:00,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:35:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:35:00,135 INFO L87 Difference]: Start difference. First operand 3007 states and 5136 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:35:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:35:07,683 INFO L93 Difference]: Finished difference Result 3006 states and 5135 transitions. [2021-11-12 23:35:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:35:07,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-12 23:35:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:35:07,696 INFO L225 Difference]: With dead ends: 3006 [2021-11-12 23:35:07,697 INFO L226 Difference]: Without dead ends: 3006 [2021-11-12 23:35:07,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:35:07,698 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 3 mSDsluCounter, 9855 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6731.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12724 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7431.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:35:07,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12724 Invalid, 1627 Unknown, 0 Unchecked, 19.72ms Time], IncrementalHoareTripleChecker [2 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 7431.42ms Time] [2021-11-12 23:35:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-11-12 23:35:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 3006. [2021-11-12 23:35:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 1654 states have (on average 1.8917775090689237) internal successors, (3129), 3000 states have internal predecessors, (3129), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2021-11-12 23:35:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5135 transitions. [2021-11-12 23:35:08,131 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5135 transitions. Word has length 65 [2021-11-12 23:35:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:35:08,131 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 5135 transitions. [2021-11-12 23:35:08,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:35:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5135 transitions. [2021-11-12 23:35:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-12 23:35:08,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:08,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:35:08,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:08,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:35:08,349 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:35:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1522422575, now seen corresponding path program 1 times [2021-11-12 23:35:08,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:08,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005166334] [2021-11-12 23:35:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:08,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:08,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:08,353 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:08,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:35:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:35:08,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:35:08,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:08,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:09,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:09,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005166334] [2021-11-12 23:35:09,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005166334] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:35:09,028 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:35:09,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:35:09,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372649537] [2021-11-12 23:35:09,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:35:09,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:35:09,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:35:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:35:09,031 INFO L87 Difference]: Start difference. First operand 3006 states and 5135 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:35:09,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:35:09,204 INFO L93 Difference]: Finished difference Result 3016 states and 5148 transitions. [2021-11-12 23:35:09,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:35:09,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-12 23:35:09,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:35:09,238 INFO L225 Difference]: With dead ends: 3016 [2021-11-12 23:35:09,247 INFO L226 Difference]: Without dead ends: 3016 [2021-11-12 23:35:09,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:35:09,251 INFO L933 BasicCegarLoop]: 2869 mSDtfsCounter, 9 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8601 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.16ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:35:09,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 8601 Invalid, 35 Unknown, 0 Unchecked, 15.16ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 88.16ms Time] [2021-11-12 23:35:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-11-12 23:35:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 3016. [2021-11-12 23:35:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 1662 states have (on average 1.8898916967509025) internal successors, (3141), 3009 states have internal predecessors, (3141), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 23:35:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5148 transitions. [2021-11-12 23:35:09,505 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5148 transitions. Word has length 73 [2021-11-12 23:35:09,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:35:09,506 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5148 transitions. [2021-11-12 23:35:09,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:35:09,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5148 transitions. [2021-11-12 23:35:09,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:35:09,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:09,507 INFO L514 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, 1, 1, 1, 1] [2021-11-12 23:35:09,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:09,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:35:09,725 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:35:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 142057039, now seen corresponding path program 1 times [2021-11-12 23:35:09,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:09,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167621142] [2021-11-12 23:35:09,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:09,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:09,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:09,728 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:09,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:35:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:35:10,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:35:10,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:10,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:10,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:10,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167621142] [2021-11-12 23:35:10,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167621142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:10,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [695725480] [2021-11-12 23:35:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:10,542 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:35:10,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:35:10,549 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:35:10,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:35:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:35:10,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:35:10,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:11,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:11,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [695725480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:11,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138984185] [2021-11-12 23:35:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:35:11,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:35:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:11,230 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:35:11,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 23:35:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:35:11,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:35:11,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:11,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:11,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138984185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:11,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:35:11,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 23:35:11,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17471599] [2021-11-12 23:35:11,893 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:35:11,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:35:11,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:35:11,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:35:11,894 INFO L87 Difference]: Start difference. First operand 3016 states and 5148 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:35:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:35:12,654 INFO L93 Difference]: Finished difference Result 3030 states and 5165 transitions. [2021-11-12 23:35:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:35:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-12 23:35:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:35:12,672 INFO L225 Difference]: With dead ends: 3030 [2021-11-12 23:35:12,672 INFO L226 Difference]: Without dead ends: 3024 [2021-11-12 23:35:12,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:35:12,674 INFO L933 BasicCegarLoop]: 2870 mSDtfsCounter, 39 mSDsluCounter, 14328 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 271.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.93ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 308.75ms IncrementalHoareTripleChecker+Time [2021-11-12 23:35:12,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 17198 Invalid, 135 Unknown, 0 Unchecked, 24.93ms Time], IncrementalHoareTripleChecker [29 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 308.75ms Time] [2021-11-12 23:35:12,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2021-11-12 23:35:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2021-11-12 23:35:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 1668 states have (on average 1.8872901678657075) internal successors, (3148), 3015 states have internal predecessors, (3148), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 23:35:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 5155 transitions. [2021-11-12 23:35:13,048 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 5155 transitions. Word has length 75 [2021-11-12 23:35:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:35:13,049 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 5155 transitions. [2021-11-12 23:35:13,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:35:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 5155 transitions. [2021-11-12 23:35:13,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-12 23:35:13,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:13,050 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:35:13,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:13,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:13,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:13,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:35:13,665 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:35:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2028559503, now seen corresponding path program 2 times [2021-11-12 23:35:13,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:13,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661238286] [2021-11-12 23:35:13,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:35:13,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:13,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:13,667 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:13,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:35:14,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:35:14,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:35:14,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:35:14,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:14,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:14,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:14,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:14,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661238286] [2021-11-12 23:35:14,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661238286] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:14,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [910803798] [2021-11-12 23:35:14,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:35:14,851 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:35:14,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:35:14,855 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:35:14,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-12 23:35:15,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:35:15,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:35:15,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:35:15,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:15,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:16,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [910803798] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:16,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823953291] [2021-11-12 23:35:16,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:35:16,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:35:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:16,123 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:35:16,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-12 23:35:30,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:35:30,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:35:30,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:35:30,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:30,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:31,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823953291] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:31,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:35:31,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-12 23:35:31,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473854266] [2021-11-12 23:35:31,683 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:35:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-12 23:35:31,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:35:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-12 23:35:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:35:31,686 INFO L87 Difference]: Start difference. First operand 3022 states and 5155 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:35:33,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:35:33,620 INFO L93 Difference]: Finished difference Result 3048 states and 5190 transitions. [2021-11-12 23:35:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-12 23:35:33,621 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-12 23:35:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:35:33,633 INFO L225 Difference]: With dead ends: 3048 [2021-11-12 23:35:33,633 INFO L226 Difference]: Without dead ends: 3042 [2021-11-12 23:35:33,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=706, Invalid=1364, Unknown=0, NotChecked=0, Total=2070 [2021-11-12 23:35:33,635 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 71 mSDsluCounter, 25815 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 628.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 28688 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.45ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 710.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:35:33,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 28688 Invalid, 390 Unknown, 0 Unchecked, 37.45ms Time], IncrementalHoareTripleChecker [65 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 710.42ms Time] [2021-11-12 23:35:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-11-12 23:35:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3034. [2021-11-12 23:35:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 1680 states have (on average 1.8827380952380952) internal successors, (3163), 3027 states have internal predecessors, (3163), 1003 states have call successors, (1003), 3 states have call predecessors, (1003), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2021-11-12 23:35:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5170 transitions. [2021-11-12 23:35:33,901 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5170 transitions. Word has length 79 [2021-11-12 23:35:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:35:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 5170 transitions. [2021-11-12 23:35:33,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-12 23:35:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5170 transitions. [2021-11-12 23:35:33,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:35:33,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:35:33,903 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:35:33,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:34,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:34,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:35:34,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:35:34,520 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 532 more)] === [2021-11-12 23:35:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:35:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 214006031, now seen corresponding path program 3 times [2021-11-12 23:35:34,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:35:34,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903772721] [2021-11-12 23:35:34,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:35:34,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:35:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:35:34,522 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:35:34,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:35:35,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:35:35,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:35:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:35:35,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:35,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:37,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:35:37,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903772721] [2021-11-12 23:35:37,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903772721] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:37,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803383030] [2021-11-12 23:35:37,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:35:37,792 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:35:37,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:35:37,793 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:35:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-12 23:35:39,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 23:35:39,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:35:40,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:35:40,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:35:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:40,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:35:40,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803383030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:35:40,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801536639] [2021-11-12 23:35:40,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:35:40,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:35:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:35:40,810 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:35:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99192fb4-7295-4849-823e-543e6fa7f301/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process